This function return the absolute value of a given number.

Signed-off-by: Jonatan Schlag <jonatan.schlag(a)ipfire.org>
---
 src/functions/functions.util | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/functions/functions.util b/src/functions/functions.util
index 4b6f956..699026d 100644
--- a/src/functions/functions.util
+++ b/src/functions/functions.util
@@ -268,6 +268,16 @@ uuid() {
 	echo $(</proc/sys/kernel/random/uuid)
 }
 
+abs() {
+	local val=${1}
+
+	if [ ${val} -lt 0 ]; then
+		(( val *= -1 ))
+	fi
+
+	echo ${val}
+}
+
 rand() {
 	local uuid="$(uuid)"
 	echo "${uuid//-/}"
-- 
2.6.3