Comments on: What shell am I in? http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/ because I don't believe in life before coffee... Wed, 23 Nov 2011 03:01:12 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Selva Sabapathy http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/comment-page-1/#comment-375566 Selva Sabapathy Thu, 11 Mar 2010 03:27:54 +0000 http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/#comment-375566 Try "ps $$" Try “ps $$”

]]> By: ganesh http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/comment-page-1/#comment-371433 ganesh Mon, 29 Dec 2008 18:30:43 +0000 http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/#comment-371433 That's a good information sharing.Thank you. That’s a good information sharing.Thank you.

]]> By: Lee http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/comment-page-1/#comment-370948 Lee Mon, 24 Nov 2008 01:37:22 +0000 http://www.lifeaftercoffee.com/2008/02/20/what-shell-am-i-in/#comment-370948 Using <code>$SHELL</code> is fine if you need to find out your <i>login</i> shell. However, to get the true value of which shell is being used <strong>at the current moment</strong> can I recommend that you teach people to use <code>echo $0</code> (although, admittedly csh will produce <code>"No file for $0"</code>) since we may have fired up a different shell since logging in and will invariably need to check which is running before performing any specific shell-scripting? E.g. <code> $ grep lee /etc/passwd lee:x:1000:1000:Lee,,,:/home/lee:/bin/bash $ echo $SHELL $0 /bin/bash bash $ ksh $ echo $SHELL $0 /bin/bash ksh </code> Using $SHELL is fine if you need to find out your login shell. However, to get the true value of which shell is being used at the current moment can I recommend that you teach people to use echo $0 (although, admittedly csh will produce "No file for $0") since we may have fired up a different shell since logging in and will invariably need to check which is running before performing any specific shell-scripting?

E.g.

$ grep lee /etc/passwd
lee:x:1000:1000:Lee,,,:/home/lee:/bin/bash
$ echo $SHELL $0
/bin/bash bash
$ ksh
$ echo $SHELL $0
/bin/bash ksh

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