Not just give a list of shells you have used, try to describe some of the key features of the shells, showing you have the real experience on them.
“I got used to the Bourne shell for early versions of Unix. Then I become accustomed to the Korne shell and happen to like it very much. It has more functions than that in vi or Emac. The interactive command line editor is so wonderful. It has built-in environment variables which allow for a customized environment.”
Then, a follow-up question might be, what’s your experience in shell programming? A good answer is to give a few examples about what scripts you have written to accomplish what tasks.
“Having a number of years’ experience using the shell, I have become very accustomed to shell programming. Script writing is almost second nature and I could apply the technique to all phases of systems administration. I have written scripts that perform automatic system backup during low CPU utilization hour. I have written interactive scripts which help to restore files to the system, scripts which can add or remove a user from the system, and xripts for new system installation.”
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