topic Re: korn shell in Operating System - Linux

korn shell

Gene Kenny — Fri, 15 Oct 2004 10:12:26 GMT

On linux can I temporaily convert from the bash shell to the korn shell. If so how can root convert to the korn shell

Thanks

Re: korn shell

John Poff — Fri, 15 Oct 2004 10:15:37 GMT

Hi,

You can temporarily use the Korn shell by doing a 'exec /usr/bin/ksh'. I don't know if root can use ksh in Linux, but I'd be very careful trying it in Linux as bash is a superset of ksh and there is no telling what might break if you did that.

JP

Re: korn shell

Steven E. Protter — Fri, 15 Oct 2004 10:16:35 GMT

There are almost no functional differences between the bash shell and the korn shell.

You can get a korn shell for Linux. Those that have tried have found the benefits are far outwieghed by the problems.

If there is a specific benefit of the korn shell you are looking for I or others can probably tell you how to get that benefit from the bash shell.

SEP

Re: korn shell

Ross Minkov — Sat, 16 Oct 2004 09:20:16 GMT

1. Get the list of available shells on that Linux system using "chsh -l"

# chsh -l
/bin/sh
/bin/bash
/sbin/nologin
/bin/bash2
/bin/ash
/bin/bsh
/bin/ksh
/bin/tcsh
/bin/csh
/bin/zsh

2. If ksh is listed go ahead and type "/bin/ksh" or just "ksh" (I'm pretty sure that you have /bin in your PATH)

================================

If you want to change your login shell (listed in /etc/passwd) then use:

chsh -s /bin/ksh

I wouldn't recommend changing the login shell to anything other than /bin/bash for root on a Linux system. There are lots of little diferences between ksh and bash...

HTH,
Ross

Re: korn shell

Marc Veeneman — Sat, 16 Oct 2004 09:28:48 GMT

Korn shell provides a number of benefits over bash. We use the improved array features most heavily and have begun using double precision arithmetic, too.

Ksh 93 is available as open source from http://www.research.att.com/sw/download/

Enjoy.

Re: korn shell

Guru Dutta — Mon, 18 Oct 2004 06:50:26 GMT

I think using exec /usr/bin/ksh would be a good approach.

Guru