X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=teeu;h=9a7345bf027b94a069a251296b4bc8d97fb91e4f;hb=8aa7fedebed4c7b707c0fde9f412235f235efce6;hp=44718f94ed6b696c9ee1f706050bff720cabb144;hpb=83e89cc8fc3d1fc682cb1ce813a3d56d8d6c5f51;p=tee-unique

diff --git a/teeu b/teeu
index 44718f9..9a7345b 100755
--- a/teeu
+++ b/teeu
@@ -3,26 +3,24 @@
 # This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
 
 teeu() {
-    local help="Usage: appendu [-h|--help] FILE
+    local help="Usage: appendu [-h|--help] FILE [LINE]
 
-Tee unique. Append each stdin line if it does not exist in the file.
+Tee unique. Append each LINE or if none, each stdin line to FILE if it does not exist in FILE.
 
   [-h|--help]  display this message"
-
     
     if [[ $1 == --help || $1 == -h ]]; then
         echo "$help"
         return
     fi
     
-    if [[ ${#@} == 0 ]]; then
-        echo "error: need 1 or more arguments"
+    if (( ${#@} == 0 )) ; then
+        echo "teeu error: need 1 or more arguments"
         echo "$help"
         return 1
     fi
-
     local MAPFILE
-    mapfile -t
+    (( ${#@} >= 2 )) && MAPFILE="${@:2}" || mapfile -t
     for line in "${MAPFILE[@]}"; do
         grep -xFq "$line" "$1" &>/dev/null || tee -a "$1" <<<"$line"
     done