test for ksh/bash

isKsh () { one=1; [ one -eq 1 ] 2> /dev/null; }
Dave Korn gave me this one. It works because ksh allows variable names ( w/o the $name syntax ) used by sh and bash. I wrote it to permit "single source" shell libraries; the current objective: every shell library may be sourced by either shell. see http://github.com/applemcg/backash
Sample Output
.$ PS1='$ '
$ sh_PS1
B.bin.$ cat .i
function sh_PS1 
{
    isKsh && {
        PS1="K.\$(basename \$PWD).$ "
    } || {
        PS1="B.\W.$ "
    }
}
B.bin.$ 

2
By: applemcg
2014-11-18 20:45:12

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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