How can I log to a specific file in linux using logger command?

Question

I will run the following script:

#!/bin/bash
./myprogram

#get exit code
exitvalue=$?

#log exit code value to /var/log/messages
logger -s \"exit code of my prog         


        

Answer 1

You can create a small logger function like this on top of your script file:

#! /bin/bash

#LOG FILE location
log_file=/tmp/mylogfile.log

#the LOG function
LOG()
{
time=$(date '+%Y-%m-%d %H:%M:%S')
echo "$time"" >>> "$1 >>${log_file}
}


message= echo "test logger message"
#to send loggers to your log file use
LOG "my message logged to my log file with timestamp = ""$message" 

check output :

head -1 /tmp/mylogfile.log
2019-09-16 14:17:46 >>> my message logged to my log file with timestamp = test logger message