rc.sysinit: Remove redundant command substitution

Invoke `grep -q` and check its return value instead of checking whether
grep(1) produces non-empty output.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/rc.sysinit b/rc.sysinit
index 458239e..88c72a0 100755
--- a/rc.sysinit
+++ b/rc.sysinit
@@ -39,7 +39,7 @@ if [[ ! -a /usr/lib ]] ; then
 	printf "${C_FAIL}/usr is not mounted. This is not supported.${C_OTHER}\n"
 fi
 
-if [[ ! $(grep devtmpfs /proc/filesystems) ]] ; then
+if ! grep -q devtmpfs /proc/filesystems; then
 	printf "${C_FAIL}Your kernel does not have devtmpfs support. This is not supported.${C_OTHER}\n"
 fi