include/log: Log messages to the logfile AND stderr

The log module only writes messages to the log file, which is not
enough for scripts that are running in the foreground. This commit
changes the log_write() function to log messages to the logfile as
well as to stderr.

diff --git a/include/log.sh b/include/log.sh
index d4e3760d20b736e6d04eedb52f6c480567b4c34e..41d2c1c4771ce901811090e2a15514ad8eb0b871 100644 (file)
--- a/include/log.sh
+++ b/include/log.sh
@@ -64,10 +64,18 @@ log_write() {
 
        if (( $# > 2 )); then
                for line in "${@:3}"; do
-                       if ! date +"%F %T %z $prefix $line" >> "$__log_file"; then
-                               echo "Could not write to $__log_file" 1>&2
+                       local msg
+
+                       if ! msg=$(date +"%F %T %z $prefix $line"); then
+                               echo "Could not get timestamp" 1>&2
                                return 1
                        fi
+
+                       if ! echo "$msg" >> "$__log_file"; then
+                               echo "Could not write to $__log_file" 1>&2
+                       fi
+
+                       echo "$msg" 1>&2
                done
        else
                while read -r line; do