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C shell

Posted on 2001-06-15
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Last Modified: 2010-04-21
Greetings,

I'm looking for an equivalent to $- in ksh to something in CSH, which shows if its interactive or not.

$?prompt  is a similar functionality..but it works in both cmd line and in a script. ..this is so that certain actions can be taken when run from a script, such as the stty cmd. Because stty complains whe it's run from a non-interactive setting.

Anybody ?
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Question by:venkatsr
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by:Talmash
ID: 6222690
hi ,

have you heard about $argv[1] , $argv[2] etc ...

it's not so clear in your qustion , but I assume that was
your wish .

in a c-sh script , you can use the argumentS given by the script your with : $argv[i] , i= num of argument

$#argv = returns the number of arguments supplied .

Tal
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ahoffmann earned 50 total points
ID: 6241210
oops, this is one of the dark sides of csh, 'cause it often OS-dependent :-(
A simple check if interactive or not is using the status returned by the tty (not stty) command, which is 0 or 1.
Some implementations of csh support to query the $arg[0] variable, which is empty or "-" for none-interactive shells (like in rsh, at, cron)
My experiance showed that $#argv is not liable, 'cause its either undefined or set even if the script is sourced (with arguments, which makes no sense):
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by:PeterMac
ID: 6413607
Venkastr

     You can try testing for "TERM" and "TTY" being set, if neither is set then shell is unlikely to be running from a terminal. Not conclusive but has advantage it works over all Unix versions and all shells.
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by:tfewster
ID: 7621352
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
- Answered by ahoffmann

Please leave any comments here before 13/1/2003

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

tfewster (I don't work here, I'm just an Expert :-)
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by:SpideyMod
ID: 7805219
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
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