X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=lib.sh;h=ea61359e2e806be5b26aaff201930743d7214b5a;hb=144b79caff995d7c5773e3efb66813bf131de0e2;hp=582e1cffe66b1f440dcec0744c08f336fffeb8ea;hpb=f8404b8badbb07ea82dd043127838fd7ef562ba9;p=config%2Fdotfiles.git

diff --git a/lib.sh b/lib.sh
index 582e1cf..ea61359 100644
--- a/lib.sh
+++ b/lib.sh
@@ -11,6 +11,25 @@ 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 | grep -E '^/' > /dev/null
+}
+
+# Prints the current OS. Supported are Debian (debian) and Mac OS X (darwin)
+# at the moment. If an unsupported OS is used an error is printed.
+os() {
+    if [ -f /etc/debian_version ]; then
+        echo debian
+    elif [ x`uname` = xDarwin ]; then
+        echo darwin
+    else
+        echo unsupported OS! >&2
+        return 1
+    fi
+}
+
 # Creates a symbolic link for file $1 in dirname of $2 with name of basenmae
 # $2.
 #