Add installed() function to check if a program exists.

[config/dotfiles.git] / lib.sh

diff --git a/lib.sh b/lib.sh
index 582e1cffe66b1f440dcec0744c08f336fffeb8ea..31b56c066db9596df61488efd4e7a48a6c8cbeae 100644 (file)
--- a/lib.sh
+++ b/lib.sh
@@ -11,6 +11,12 @@ unset LS_COLORS
 m4=`which m4`
 
 
+# Check if the given program is installed. Returns 0 if it exists, 1
+# otherwise; so it can be used in if.
+installed() {
+    which $1 > /dev/null
+}
+
 # Creates a symbolic link for file $1 in dirname of $2 with name of basenmae
 # $2.
 #