Comments on: Saying What You Mean http://www.pythian.com/blogs/762/saying-what-you-mean News and views from Pythian DBAs Mon, 12 May 2008 15:23:17 +0000 http://wordpress.org/?v=2.3.2 By: Bill Karwin http://www.pythian.com/blogs/762/saying-what-you-mean#comment-172691 Bill Karwin Fri, 21 Mar 2008 17:03:18 +0000 http://www.pythian.com/blogs/762/saying-what-you-mean#comment-172691 Why are you starting another instance of the ksh shell if you know the current process is already a running ksh shell? You can activate the vi behavior of command history editing in the current ksh shell: $ set -o vi Also, just because $SHELL is set to a value doesn't guarantee that it's accurate. And ksh isn't always in /usr/bin. It'd be a bit more reliable to test for `basename $0` = ksh. Why are you starting another instance of the ksh shell if you know the current process is already a running ksh shell? You can activate the vi behavior of command history editing in the current ksh shell:
$ set -o vi

Also, just because $SHELL is set to a value doesn’t guarantee that it’s accurate. And ksh isn’t always in /usr/bin. It’d be a bit more reliable to test for `basename $0` = ksh.

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