[NTLUG:Discuss] Simple bash shell question

[Ed Leach]

This should help:

   http://wooledge.org/mywiki/BashFaq#faq24

(Big page loads slowly.)

------------------

. Daniel wrote:
> This is probably so elementary that maybe I shouldn't bother asking, but 
> I'd like to know.
> 
> Given the following:
> ----
> #!/bin/sh
> fcount=0
> ls -1 *.mpg | while read filename ; do
>     fcount=$(expr $fcount + 1)
>     echo $fcount
> done
> echo $fcount
> ----
> 
> why do I get the following output?
> ----
> [daniel at alpha ~]$ test.sh
> 1
> 2
> 3
> 4
> 0
> ----
> 
> I would expect:
> 1 
> 2 
> 3 
> 4 
> 4
> 
> Where is my thinking broken?
> 
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