Merge pull request #2962 from keszybz/value-option

Add `--value` option to systemctl and loginctl to only print values

5 files changed, 143 insertions, 92 deletions

diff --git a/src/login/loginctl.c b/src/login/loginctl.c
index c9a5cd796b..01f6fa5db0 100644
--- a/src/login/loginctl.c
+++ b/src/login/loginctl.c
@@ -48,6 +48,7 @@
 
 static char **arg_property = NULL;
 static bool arg_all = false;
+static bool arg_value = false;
 static bool arg_full = false;
 static bool arg_no_pager = false;
 static bool arg_legend = true;
@@ -679,6 +680,14 @@ static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line)
         return 0;
 }
 
+#define property(name, fmt, ...)                                        \
+        do {                                                            \
+                if (arg_value)                                          \
+                        printf(fmt "\n", __VA_ARGS__);                  \
+                else                                                    \
+                        printf("%s=" fmt "\n", name, __VA_ARGS__);      \
+        } while(0)
+
 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
         int r;
 
@@ -702,7 +711,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         if (arg_all || !isempty(s))
-                                printf("%s=%s\n", name, s);
+                                property(name, "%s", s);
 
                         return 0;
 
@@ -718,8 +727,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return -EINVAL;
                         }
 
-                        printf("%s=" UID_FMT "\n", name, uid);
-
+                        property(name, UID_FMT, uid);
                         return 0;
                 }
 
@@ -735,14 +743,16 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
-                        printf("%s=", name);
+                        if (!arg_value)
+                                printf("%s=", name);
 
                         while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) {
                                 printf("%s%s", space ? " " : "", s);
                                 space = true;
                         }
 
-                        printf("\n");
+                        if (space || !arg_value)
+                                printf("\n");
 
                         if (r < 0)
                                 return bus_log_parse_error(r);
@@ -757,7 +767,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                 break;
         }
 
-        r = bus_print_property(name, m, arg_all);
+        r = bus_print_property(name, m, arg_value, arg_all);
         if (r < 0)
                 return bus_log_parse_error(r);
 
@@ -1330,6 +1340,7 @@ static int help(int argc, char *argv[], void *userdata) {
                "  -M --machine=CONTAINER   Operate on local container\n"
                "  -p --property=NAME       Show only properties by this name\n"
                "  -a --all                 Show all properties, including empty ones\n"
+               "     --value               When showing properties, only print the value\n"
                "  -l --full                Do not ellipsize output\n"
                "     --kill-who=WHO        Who to send signal to\n"
                "  -s --signal=SIGNAL       Which signal to send\n"
@@ -1371,6 +1382,7 @@ static int parse_argv(int argc, char *argv[]) {
 
         enum {
                 ARG_VERSION = 0x100,
+                ARG_VALUE,
                 ARG_NO_PAGER,
                 ARG_NO_LEGEND,
                 ARG_KILL_WHO,
@@ -1382,6 +1394,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "version",         no_argument,       NULL, ARG_VERSION         },
                 { "property",        required_argument, NULL, 'p'                 },
                 { "all",             no_argument,       NULL, 'a'                 },
+                { "value",           no_argument,       NULL, ARG_VALUE           },
                 { "full",            no_argument,       NULL, 'l'                 },
                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
@@ -1427,6 +1440,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_all = true;
                         break;
 
+                case ARG_VALUE:
+                        arg_value = true;
+                        break;
+
                 case 'l':
                         arg_full = true;
                         break;
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index e49c90fd1b..1d3264a1de 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -61,6 +61,7 @@
 
 static char **arg_property = NULL;
 static bool arg_all = false;
+static bool arg_value = false;
 static bool arg_full = false;
 static bool arg_no_pager = false;
 static bool arg_legend = true;
@@ -129,15 +130,14 @@ static int list_machines(int argc, char *argv[], void *userdata) {
 
         pager_open(arg_no_pager, false);
 
-        r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.machine1",
-                                "/org/freedesktop/machine1",
-                                "org.freedesktop.machine1.Manager",
-                                "ListMachines",
-                                &error,
-                                &reply,
-                                NULL);
+        r = sd_bus_call_method(bus,
+                               "org.freedesktop.machine1",
+                               "/org/freedesktop/machine1",
+                               "org.freedesktop.machine1.Manager",
+                               "ListMachines",
+                               &error,
+                               &reply,
+                               NULL);
         if (r < 0) {
                 log_error("Could not get machines: %s", bus_error_message(&error, -r));
                 return r;
@@ -232,15 +232,14 @@ static int list_images(int argc, char *argv[], void *userdata) {
 
         pager_open(arg_no_pager, false);
 
-        r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.machine1",
-                                "/org/freedesktop/machine1",
-                                "org.freedesktop.machine1.Manager",
-                                "ListImages",
-                                &error,
-                                &reply,
-                                "");
+        r = sd_bus_call_method(bus,
+                               "org.freedesktop.machine1",
+                               "/org/freedesktop/machine1",
+                               "org.freedesktop.machine1.Manager",
+                               "ListImages",
+                               &error,
+                               &reply,
+                               "");
         if (r < 0) {
                 log_error("Could not get images: %s", bus_error_message(&error, -r));
                 return r;
@@ -680,7 +679,7 @@ static int show_machine_properties(sd_bus *bus, const char *path, bool *new_line
 
         *new_line = true;
 
-        r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all);
+        r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_value, arg_all);
         if (r < 0)
                 log_error_errno(r, "Could not get properties: %m");
 
@@ -713,15 +712,14 @@ static int show_machine(int argc, char *argv[], void *userdata) {
         for (i = 1; i < argc; i++) {
                 const char *path = NULL;
 
-                r = sd_bus_call_method(
-                                        bus,
-                                        "org.freedesktop.machine1",
-                                        "/org/freedesktop/machine1",
-                                        "org.freedesktop.machine1.Manager",
-                                        "GetMachine",
-                                        &error,
-                                        &reply,
-                                        "s", argv[i]);
+                r = sd_bus_call_method(bus,
+                                       "org.freedesktop.machine1",
+                                       "/org/freedesktop/machine1",
+                                       "org.freedesktop.machine1.Manager",
+                                       "GetMachine",
+                                       &error,
+                                       &reply,
+                                       "s", argv[i]);
                 if (r < 0) {
                         log_error("Could not get path to machine: %s", bus_error_message(&error, -r));
                         return r;
@@ -929,7 +927,7 @@ static int show_image_properties(sd_bus *bus, const char *path, bool *new_line)
 
         *new_line = true;
 
-        r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all);
+        r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_value, arg_all);
         if (r < 0)
                 log_error_errno(r, "Could not get properties: %m");
 
@@ -2183,15 +2181,14 @@ static int list_transfers(int argc, char *argv[], void *userdata) {
 
         pager_open(arg_no_pager, false);
 
-        r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.import1",
-                                "/org/freedesktop/import1",
-                                "org.freedesktop.import1.Manager",
-                                "ListTransfers",
-                                &error,
-                                &reply,
-                                NULL);
+        r = sd_bus_call_method(bus,
+                               "org.freedesktop.import1",
+                               "/org/freedesktop/import1",
+                               "org.freedesktop.import1.Manager",
+                               "ListTransfers",
+                               &error,
+                               &reply,
+                               NULL);
         if (r < 0) {
                 log_error("Could not get transfers: %s", bus_error_message(&error, -r));
                 return r;
@@ -2356,6 +2353,7 @@ static int help(int argc, char *argv[], void *userdata) {
                "  -p --property=NAME          Show only properties by this name\n"
                "  -q --quiet                  Suppress output\n"
                "  -a --all                    Show all properties, including empty ones\n"
+               "     --value                  When showing properties, only print the value\n"
                "  -l --full                   Do not ellipsize output\n"
                "     --kill-who=WHO           Who to send signal to\n"
                "  -s --signal=SIGNAL          Which signal to send\n"
@@ -2418,6 +2416,7 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_VERSION = 0x100,
                 ARG_NO_PAGER,
                 ARG_NO_LEGEND,
+                ARG_VALUE,
                 ARG_KILL_WHO,
                 ARG_READ_ONLY,
                 ARG_MKDIR,
@@ -2434,6 +2433,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "version",         no_argument,       NULL, ARG_VERSION         },
                 { "property",        required_argument, NULL, 'p'                 },
                 { "all",             no_argument,       NULL, 'a'                 },
+                { "value",           no_argument,       NULL, ARG_VALUE           },
                 { "full",            no_argument,       NULL, 'l'                 },
                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
@@ -2485,6 +2485,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_all = true;
                         break;
 
+                case ARG_VALUE:
+                        arg_value = true;
+                        break;
+
                 case 'l':
                         arg_full = true;
                         break;
diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index d9dd3c6a11..0caaca03c7 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -712,7 +712,15 @@ int bus_connect_user_systemd(sd_bus **_bus) {
         return 0;
 }
 
-int bus_print_property(const char *name, sd_bus_message *property, bool all) {
+#define print_property(name, fmt, ...)                                  \
+        do {                                                            \
+                if (value)                                              \
+                        printf(fmt "\n", __VA_ARGS__);                  \
+                else                                                    \
+                        printf("%s=" fmt "\n", name, __VA_ARGS__);      \
+        } while(0)
+
+int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all) {
         char type;
         const char *contents;
         int r;
@@ -740,7 +748,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         if (!escaped)
                                 return -ENOMEM;
 
-                        printf("%s=%s\n", name, escaped);
+                        print_property(name, "%s", escaped);
                 }
 
                 return 1;
@@ -753,7 +761,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                 if (r < 0)
                         return r;
 
-                printf("%s=%s\n", name, yes_no(b));
+                print_property(name, "%s", yes_no(b));
 
                 return 1;
         }
@@ -773,14 +781,14 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
 
                         t = format_timestamp(timestamp, sizeof(timestamp), u);
                         if (t || all)
-                                printf("%s=%s\n", name, strempty(t));
+                                print_property(name, "%s", strempty(t));
 
                 } else if (strstr(name, "USec")) {
                         char timespan[FORMAT_TIMESPAN_MAX];
 
-                        printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0));
+                        print_property(name, "%s", format_timespan(timespan, sizeof(timespan), u, 0));
                 } else
-                        printf("%s=%llu\n", name, (unsigned long long) u);
+                        print_property(name, "%"PRIu64, u);
 
                 return 1;
         }
@@ -792,7 +800,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                 if (r < 0)
                         return r;
 
-                printf("%s=%lld\n", name, (long long) i);
+                print_property(name, "%"PRIi64, i);
 
                 return 1;
         }
@@ -805,9 +813,9 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         return r;
 
                 if (strstr(name, "UMask") || strstr(name, "Mode"))
-                        printf("%s=%04o\n", name, u);
+                        print_property(name, "%04o", u);
                 else
-                        printf("%s=%u\n", name, (unsigned) u);
+                        print_property(name, "%"PRIu32, u);
 
                 return 1;
         }
@@ -819,7 +827,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                 if (r < 0)
                         return r;
 
-                printf("%s=%i\n", name, (int) i);
+                print_property(name, "%"PRIi32, i);
                 return 1;
         }
 
@@ -830,7 +838,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                 if (r < 0)
                         return r;
 
-                printf("%s=%g\n", name, d);
+                print_property(name, "%g", d);
                 return 1;
         }
 
@@ -846,7 +854,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         while ((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) {
                                 _cleanup_free_ char *escaped = NULL;
 
-                                if (first)
+                                if (first && !value)
                                         printf("%s=", name);
 
                                 escaped = xescape(str, "\n ");
@@ -860,7 +868,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         if (r < 0)
                                 return r;
 
-                        if (first && all)
+                        if (first && all && !value)
                                 printf("%s=", name);
                         if (!first || all)
                                 puts("");
@@ -882,7 +890,8 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         if (all || n > 0) {
                                 unsigned int i;
 
-                                printf("%s=", name);
+                                if (!value)
+                                        printf("%s=", name);
 
                                 for (i = 0; i < n; i++)
                                         printf("%02x", u[i]);
@@ -903,7 +912,8 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
                         if (all || n > 0) {
                                 unsigned int i;
 
-                                printf("%s=", name);
+                                if (!value)
+                                        printf("%s=", name);
 
                                 for (i = 0; i < n; i++)
                                         printf("%08x", u[i]);
@@ -920,7 +930,7 @@ int bus_print_property(const char *name, sd_bus_message *property, bool all) {
         return 0;
 }
 
-int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all) {
+int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all) {
         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
         int r;
@@ -960,7 +970,7 @@ int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, ch
                         if (r < 0)
                                 return r;
 
-                        r = bus_print_property(name, reply, all);
+                        r = bus_print_property(name, reply, value, all);
                         if (r < 0)
                                 return r;
                         if (r == 0) {
diff --git a/src/shared/bus-util.h b/src/shared/bus-util.h
index fcda1b2c6c..1a0841ce81 100644
--- a/src/shared/bus-util.h
+++ b/src/shared/bus-util.h
@@ -78,8 +78,8 @@ int bus_connect_user_systemd(sd_bus **_bus);
 int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **bus);
 int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus);
 
-int bus_print_property(const char *name, sd_bus_message *property, bool all);
-int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all);
+int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all);
+int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all);
 
 int bus_property_get_bool(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error);
 
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 3407d93c80..62cff3a677 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -103,6 +103,7 @@ static bool arg_no_pager = false;
 static bool arg_no_wtmp = false;
 static bool arg_no_wall = false;
 static bool arg_no_reload = false;
+static bool arg_value = false;
 static bool arg_show_types = false;
 static bool arg_ignore_inhibitors = false;
 static bool arg_dry = false;
@@ -4116,6 +4117,14 @@ skip:
         return 0;
 }
 
+#define print_prop(name, fmt, ...)                                      \
+        do {                                                            \
+                if (arg_value)                                          \
+                        printf(fmt "\n", __VA_ARGS__);                  \
+                else                                                    \
+                        printf("%s=" fmt "\n", name, __VA_ARGS__);      \
+        } while(0)
+
 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
         int r;
 
@@ -4143,9 +4152,9 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         if (u > 0)
-                                printf("%s=%"PRIu32"\n", name, u);
+                                print_prop(name, "%"PRIu32, u);
                         else if (arg_all)
-                                printf("%s=\n", name);
+                                print_prop(name, "%s", "");
 
                         return 0;
 
@@ -4157,7 +4166,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         if (arg_all || !isempty(s))
-                                printf("%s=%s\n", name, s);
+                                print_prop(name, "%s", s);
 
                         return 0;
 
@@ -4169,7 +4178,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         if (arg_all || !isempty(a) || !isempty(b))
-                                printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
+                                print_prop(name, "%s \"%s\"", strempty(a), strempty(b));
 
                         return 0;
                 } else if (streq_ptr(name, "SystemCallFilter")) {
@@ -4196,8 +4205,10 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 bool first = true;
                                 char **i;
 
-                                fputs(name, stdout);
-                                fputc('=', stdout);
+                                if (!arg_value) {
+                                        fputs(name, stdout);
+                                        fputc('=', stdout);
+                                }
 
                                 if (!whitelist)
                                         fputc('~', stdout);
@@ -4229,7 +4240,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0)
-                                printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
+                                print_prop("EnvironmentFile", "%s (ignore_errors=%s)\n", path, yes_no(ignore));
 
                         if (r < 0)
                                 return bus_log_parse_error(r);
@@ -4248,7 +4259,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
-                                printf("%s=%s\n", type, path);
+                                print_prop(type, "%s", path);
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
@@ -4266,7 +4277,10 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
-                                printf("Listen%s=%s\n", type, path);
+                                if (arg_value)
+                                        puts(path);
+                                else
+                                        printf("Listen%s=%s\n", type, path);
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
@@ -4287,10 +4301,9 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                         while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) {
                                 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
 
-                                printf("%s={ value=%s ; next_elapse=%s }\n",
-                                       base,
-                                       format_timespan(timespan1, sizeof(timespan1), value, 0),
-                                       format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
+                                print_prop(base, "{ value=%s ; next_elapse=%s }",
+                                           format_timespan(timespan1, sizeof(timespan1), value, 0),
+                                           format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
                         }
                         if (r < 0)
                                 return bus_log_parse_error(r);
@@ -4314,18 +4327,18 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
 
                                 tt = strv_join(info.argv, " ");
 
-                                printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }\n",
-                                       name,
-                                       strna(info.path),
-                                       strna(tt),
-                                       yes_no(info.ignore),
-                                       strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
-                                       strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
-                                       info.pid,
-                                       sigchld_code_to_string(info.code),
-                                       info.status,
-                                       info.code == CLD_EXITED ? "" : "/",
-                                       strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
+                                print_prop(name,
+                                           "{ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }",
+                                           strna(info.path),
+                                           strna(tt),
+                                           yes_no(info.ignore),
+                                           strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
+                                           strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
+                                           info.pid,
+                                           sigchld_code_to_string(info.code),
+                                           info.status,
+                                           info.code == CLD_EXITED ? "" : "/",
+                                           strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
 
                                 free(info.path);
                                 strv_free(info.argv);
@@ -4346,7 +4359,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0)
-                                printf("%s=%s %s\n", name, strna(path), strna(rwm));
+                                print_prop(name, "%s %s", strna(path), strna(rwm));
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
@@ -4365,7 +4378,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0)
-                                printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
+                                print_prop(name, "%s %"PRIu64, strna(path), weight);
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
@@ -4384,7 +4397,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0)
-                                printf("%s=%s %" PRIu64 "\n", name, strna(path), bandwidth);
+                                print_prop(name, "%s %"PRIu64, strna(path), bandwidth);
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
@@ -4398,7 +4411,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                 break;
         }
 
-        r = bus_print_property(name, m, arg_all);
+        r = bus_print_property(name, m, arg_value, arg_all);
         if (r < 0)
                 return bus_log_parse_error(r);
 
@@ -6243,6 +6256,7 @@ static void systemctl_help(void) {
                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
                "                      queueing a new job\n"
                "     --show-types     When showing sockets, explicitly show their type\n"
+               "     --value          When showing properties, only print the value\n"
                "  -i --ignore-inhibitors\n"
                "                      When shutting down or sleeping, ignore inhibitors\n"
                "     --kill-who=WHO   Who to send signal to\n"
@@ -6494,6 +6508,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 ARG_SHOW_TYPES,
                 ARG_IRREVERSIBLE,
                 ARG_IGNORE_DEPENDENCIES,
+                ARG_VALUE,
                 ARG_VERSION,
                 ARG_USER,
                 ARG_SYSTEM,
@@ -6535,6 +6550,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
+                { "value",               no_argument,       NULL, ARG_VALUE               },
                 { "user",                no_argument,       NULL, ARG_USER                },
                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
@@ -6686,6 +6702,10 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         arg_show_types = true;
                         break;
 
+                case ARG_VALUE:
+                        arg_value = true;
+                        break;
+
                 case ARG_JOB_MODE:
                         arg_job_mode = optarg;
                         break;