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korn shell

Gene Kenny
Regular Advisor

korn shell

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
5 REPLIES
John Poff
Honored Contributor

Re: korn shell

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
Steven E. Protter
Exalted Contributor

Re: korn shell

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
Steven E Protter
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Ross Minkov
Esteemed Contributor

Re: korn shell

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

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.
Guru Dutta
Frequent Advisor

Re: korn shell

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

Guru