# Function: Setup logfile and redirect stdout/stderr.
log_setup() {
# Check if logfile exists and is writable.
( [ -e "$logfile" ] || touch "$logfile" ) && [ ! -w "$logfile" ] && echo "ERROR: Cannot write to $logfile. Check permissions or sudo access." && exit 1
tmplog=$(tail -n $logfile_max_lines $logfile 2>/dev/null) && echo "${tmplog}" > $logfile
exec > >(tee -a $logfile)
exec 2>&1
}
# Function: Log an event.
log() {
echo "[$(date +"%Y-%m-%d"+"%T")]: $*"
}
# check json file by jq
function check_json()
{
JSON_FILE=$1
if [ ! -f $JSON_FILE ]; then
printf "${JSON_FILE} is not exits. Please check. \n" >> $OUTPUT_FILE
cat $OUTPUT_FILE >> $ARCHIVE_LOG
exit 2
elif ! jq . $JSON_FILE >/dev/null 2>&1; then
printf "jq cannot parse ${JSON_FILE}, Please check. \n" >> $OUTPUT_FILE
exit 2
fi
}
# Function: Log an event.
log() {
echo "[$(date +"%Y-%m-%d"+"%T")]: $*"
}
转载于:https://my.oschina.net/firxiao/blog/3039786