From: Neon John <johngd_at_bellsouth.net>
Date: Fri, 14 Jan 2005 18:32:18 -0500

On Fri, 14 Jan 2005 15:15:58 -0800, Menachem Shapiro
<menachem.shapiro_at_gmail.com> wrote:

>----script excerpt--------
> for f in `ls "$MOUNT"|sed 's/ /_-_-_/g'`; do
> f=`echo "$f"|sed 's/_-_-_/ /g'`
> echo "cp $f -> $TARGET"
> cp "$f" "$TARGET" 2>/dev/null >&1 || faildo "$f"
> unset f
> done
>--------end excerpt--------
>
>Is it standard practice to use the same variable ('f') as the variable
>used for the for loop? I noticed it gets unset at the end, but it
>seems a little scary.

Perfectly normal. the loop runs until the list produced by the ls |sed
pipe is exhausted, then exits. When the list is exhausted, f is not
assigned anything. The unset leaves f with a null string which is FALSE
in the "for" conditional.

I can't think of any easier way to do that in a shell script. Clever.

John

---
John De Armond
johngdDONTYOUDARE_at_bellsouth.net
http://bellsouthpwp.net/j/o/johngd/
Cleveland, Occupied TN
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Received on 2005-01-15