how i creat log file in unix?

Question

i write bash file to do a certain event .... now i want to creat log file to record date of executing bash file and result of execute it "exit code" ??

Answer 1

echo "[$(date +%c)] Process exited with result code: $?" >> /var/log/something.log

Feel free to change +%c with something else appropriate. See the date(1) man page for details.