How to add timestamp to STDERR redirection

Question

In bash/ksh can we add timestamp to STDERR redirection?

E.g. myscript.sh 2> error.log

I want to get a timestamp written on the log too.

Answer 1

Thought I would add my 2 cents worth..

#!/bin/sh

timestamp(){
  name=$(printf "$1%*s" `expr 15 - ${#1}`)
  awk "{ print strftime(\"%b %d %H:%M:%S\"), \"- $name -\", $$, \"- INFO -\", \$0; fflush() }";
}

echo "hi" | timestamp "process name" >> /tmp/proccess.log

printf "$1%*s" `expr 15 - ${#1}`
Spaces the name out so it looks nice, where 15 is the max space issued, increase if desired

outputs >> Date - Process name - Process ID - INFO - Message

Jun 27 13:57:20 - process name     - 18866 - INFO - hi