scripts/portable_date.sh: fix parsing of date strings on non-GNU systems

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48592 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/scripts/portable_date.sh b/scripts/portable_date.sh
index 84a18eb..244f545 100755 (executable)
--- a/scripts/portable_date.sh
+++ b/scripts/portable_date.sh
@@ -2,10 +2,10 @@
 
 case $(uname) in
        NetBSD|OpenBSD|DragonFly|FreeBSD|Darwin)
-               date -r $1 $2
+               date -j -f "%Y-%m-%d %H:%M:%S %z" "$1" "$2" 2>/dev/null
                ;;
        *)
-               date -d @$1 $2
+               date -d "@$1" "$2"
 esac
 
 exit $?