add verbose option, license for small program

diff --git a/log-once b/log-once
index 3532110fc1de9d2b6c2a4e9b5805fc234a5e9ef8..5ada71b2ab5b2ba412d809c01a0a97a70e41223e 100755 (executable)
--- a/log-once
+++ b/log-once
@@ -1,12 +1,27 @@
 #!/bin/bash
 # Copyright (C) 2019 Ian Kelling
-# SPDX-License-Identifier: AGPL-3.0-or-later
+# Log errors once or so instead of many times.
+
+    # This program is free software: you can redistribute it and/or modify
+    # it under the terms of the GNU General Public License as published by
+    # the Free Software Foundation, either version 3 of the License, or
+    # (at your option) any later version.
+
+    # This program is distributed in the hope that it will be useful,
+    # but WITHOUT ANY WARRANTY; without even the implied warranty of
+    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    # GNU General Public License for more details.
+
+    # You should have received a copy of the GNU General Public License
+    # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 append() {
   cat >> "$1"
 }
 log-once() {
-  local cbase c log line i out file o tmp mvout mverr
+  local cbase c log line i out file o tmp mvout mverr verbose
   cbase=/var/local/cron-errors
   [[ $EUID == 0 ]] || cbase=$HOME/cron-errors
   local help="Usage: some-command-that-outputs-on-error |& log-once [OPTION]... LOG_NAME
@@ -20,6 +35,7 @@ Logs STDIN to /var/local/cron-errors/LOG_NAME\$error_count or
 $HOME/cron-errors if not root, and keeps state in the same directory.
 
 -ERRORS:  ERRORS is the number of errors to accumulate before outputing the error
+-v:       Output the errors along the way to ERRORS
 
 
 You can emulate how cronjobs work by doing this for example:
@@ -31,10 +47,15 @@ be an error, but I haven't written it yet.
 "
   errors=3
   mverr=0
+  verbose=false
+
   while true; do
     if [[ $1 == --help ]]; then
       echo "$help"
       return
+    elif [[ $1 == -v ]]; then
+      verbose=true
+      shift
     elif [[ $1 == -[0-9]* ]]; then
       errors=${1#-}
       shift
@@ -82,7 +103,7 @@ be an error, but I haven't written it yet.
           fi
         fi
         file=$new_file
-        if [[ $file == $c$errors ]]; then
+        if [[ $file == $c$errors ]] || $verbose; then
           out="tee -a"
         fi
       fi