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authorache <ache@ache.one>2016-11-14 12:34:43 +0100
committerache <ache@ache.one>2016-11-14 12:37:52 +0100
commitb9f50fd15d3deb85d09b8fbc953e5036bbd67b1f (patch)
tree3699a906db58d365e26275892faaf6b0d27374ca /light2.sh
parentNew script : light2 (diff)
Message when backlight isn't detected
Diffstat (limited to 'light2.sh')
-rwxr-xr-xlight2.sh12
1 files changed, 8 insertions, 4 deletions
diff --git a/light2.sh b/light2.sh
index 5f0c501..20e68a9 100755
--- a/light2.sh
+++ b/light2.sh
@@ -12,8 +12,12 @@ else
val="$1"
fi
-for backlight in "$listBacklight"
-do
- echo "${val}" | sudo tee "/sys/class/backlight/${backlight}/brightness" 2>&1 /dev/null
-done
+if [ -n "$listBacklight" ] ; then
+ for backlight in "$listBacklight"
+ do
+ echo "${val}" | sudo tee "/sys/class/backlight/${backlight}/brightness" 2>&1 /dev/null
+ done
+else
+ echo 'No backlight detected'
+fi