Re: "for" and line by line

dfrench_at_mtxia.com
Date: 10/29/04 

Date: 29 Oct 2004 06:39:26 -0700

Markus Wenke wrote:
> Hi,
>
> I want to write a "for"-loop in bash such like this one:
>
> for LINE in `cat /etc/passwd`; do
> echo $LINE
> done
>
> But I get every word, and not every line. and if I set "IFS=^M" like
this:
>
>
> IFS=[CTRL V][ENTER] for LINE in `cat /etc/passwd`; do
> echo $LINE
> done
>
> the bash can't read the command.
>

In ksh and bash you can use the "escape sequence" processor $'' to
interpret escape sequences. For example to set the IFS variable to a
"space-tab-newline":

IFS=$' \t\n'

So to set IFS to a single newline: IFS=$'\n'

All the normal escape sequences can be used inside the escape sequence
processor including hex and octal values. See the ksh manual for more
info. 

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