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Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

9141.0. "How to implement a shell script counter" by SANITY::LEMONS (And we thank you for your support.) Wed Mar 12 1997 12:46

    Hi
    
    What's the correct way to increment a counter in a DU shell script?
    
    I've tried
    
    i = i + 1
    i = $i + 1
    @i = $i + 1
    
    with and without parentheses, and get an error for all of them.  I
    looked in the 'Command and Shell User's Guide', and didn't see an
    examples for doing this.
    
    Is there a good book on writing shell scripts for Digital UNIX?  The
    section in 'Command and Shell User's Guide' is pretty weak.
    
    Thanks!
    tl

T.R	Title	User	Personal Name	Date	Lines
9141.1		NETRIX::"[email protected]"	Chyan,Chia-Jen Liu	`Wed Mar 12 1997 13:21`	15
	The following will work for both ksh and sh. You can also do a manpage on expr. $ count=1 $ c=`expr $count + 1 ` $ echo "New count is $c" New count is 2 Regards, Chia-Jen Liu Chyan CSC Atlanta [Posted by WWW Notes gateway]
9141.2	csh example	NETRIX::"[email protected]"	leon strauss	`Wed Mar 12 1997 16:51`	7
	Fwiw, this csh example works for me ... set count=0 @ count = $count + 1 leon [Posted by WWW Notes gateway]
9141.3	++	VAXCPU::michaud	Jeff Michaud - ObjectBroker	`Wed Mar 12 1997 20:30`	8
	> Fwiw, this csh example works for me ... > set count=0 > @ count = $count + 1 And don't forget this is the "C" shell, so when in Rome ... set count=0 @ count++
9141.4		SANITY::LEMONS	And we thank you for your support.	`Wed Mar 12 1997 21:50`	3
	Neat-o! Thanks, all, for the fast response! tl