Problems with 'expr'

[Fleischer, Karsten (K.)]

Hi Jens,

Use quotes around * and (, like

expr 3 '*' 4

Otherwise bash will expand * to all the files in the current dir.
( has special meaning to bash, too.

expr '3 * 4'

on the other hand, is evaluated to the string "3 * 4"

See bash's manpage.

Karsten

> -----Original Message-----
> From: jens@uniweb.se [ mailto:jens@uniweb.se ]
> Sent: Donnerstag, 21. September 2000 14:32
> To: cygwin@sources.redhat.com
> Subject: Problems with 'expr'
> 
> 
>  Hi,
> 
>  I tried to use 'expr'. And it worked fine for this
> 'expr 1 + 2 + 3'. But if I try to use '(' or '*' it
> will print 'expr: syntax error'. Shouldn't the
> following work? 'expr 3 * 4'?
> 
>  Jens Yllman
> 
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