From b6e8ebd66d22abf5439485985a7851e768c71e8a Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Wed, 8 Jan 2014 21:04:43 -0500
Subject: Be very careful about using $0.

---
 db-functions | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

(limited to 'db-functions')

diff --git a/db-functions b/db-functions
index 59e9c29..26b23e4 100644
--- a/db-functions
+++ b/db-functions
@@ -16,7 +16,7 @@ restore_umask () {
 }
 
 # set up general environment
-WORKDIR=$(mktemp -dt "$(basename $0).XXXXXXXXXX")
+WORKDIR=$(mktemp -dt "${0##*/}.XXXXXXXXXX")
 LOCKS=()
 
 # check if messages are to be printed using color
@@ -85,10 +85,10 @@ get_full_version() {
 }
 
 script_lock() {
-	local LOCKDIR="$TMPDIR/.scriptlock.$(basename $0)"
+	local LOCKDIR="$TMPDIR/.scriptlock.${0##*/}"
 	if ! mkdir "$LOCKDIR" >/dev/null 2>&1 ; then
 		local _owner="$(/usr/bin/stat -c %U $LOCKDIR)"
-		error "Script $(basename $0) is already locked by $_owner."
+		error "Script ${0##*/} is already locked by $_owner."
 		exit 1
 	else
 		set_umask
@@ -97,9 +97,9 @@ script_lock() {
 }
 
 script_unlock() {
-	local LOCKDIR="$TMPDIR/.scriptlock.$(basename $0)"
+	local LOCKDIR="$TMPDIR/.scriptlock.${0##*/}"
 	if [ ! -d "$LOCKDIR" ]; then
-		warning "Script $(basename $0) was not locked!"
+		warning "Script ${0##*/} was not locked!"
 		restore_umask
 		return 1
 	else
@@ -123,8 +123,8 @@ cleanup() {
 			repo_unlock $repo $arch
 		fi
 	done
-	if [ -d "$TMPDIR/.scriptlock.$(basename $0)" ]; then
-		msg "Removing left over lock from $(basename $0)"
+	if [ -d "$TMPDIR/.scriptlock.${0##*/}" ]; then
+		msg "Removing left over lock from ${0##*/}"
 		script_unlock
 	fi
 	rm -rf "$WORKDIR"
-- 
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