afssh: use realpath instead of readlink -f, with fallback

this add compatibility for some BSD systems which don't have -f to readlink
while retaining compatibility with GNU systems without a readlink command

Thanks: Konstantinos Koukopoulos <kouk@transifex.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/afssh b/afssh
index c482aea..3899fba 100755
--- a/afssh
+++ b/afssh
@@ -51,8 +51,10 @@ fi
 
 declare -a agent_filter_args
 
+type realpath >/dev/null 2>&1 || realpath () { readlink -f "$@"; }
+
 if [ -x "${BASH_SOURCE%/*}/ssh-agent-filter" ]; then
-	SAF=$(readlink -f "${BASH_SOURCE%/*}/ssh-agent-filter")
+	SAF=$(realpath "${BASH_SOURCE%/*}/ssh-agent-filter")
 else
 	SAF=$(which ssh-agent-filter)
 fi