lib.sh: Use simpler version in installed() using cut.

diff --git a/lib.sh b/lib.sh
index 1862444f7f560fd9b6eb1922da19423b01459fc0..045af4c44afb05f8b3f3583f357d859a0a2424c3 100644 (file)
--- a/lib.sh
+++ b/lib.sh
@@ -11,11 +11,7 @@ unset LS_COLORS
 # Check if the given program is installed. Returns 0 if it exists, 1
 # otherwise; so it can be used in if.
 installed() {
-    # Thanks to Rado in #awk on Freenode (2010-03-29 01:34) for the END tip to
-    # also work with empty stdin, and to prince_jammys in #awk on Freenode
-    # (2010-03-29 02:20) for a shorter syntax for "$0 !~".
-    which $1 2>&1 | awk '{ if (!/^\//) exit 1 }
-                         END { if (NR == 0) exit 1 }'
+    [ x`which $1 2>&1 | cut -c 1` = x/ ] || return 1
 }
 
 # Print the current OS. The following OS are supported at the moment: