On 11/14/06, Oded Arbel <[EMAIL PROTECTED]> wrote:
[snip]
(IFS="$(echo)"; \
for pair in `awk '/^[^[].+[^\n]$/ {print $1,$3}' passwd.fake`; do
echo "$pair"; done)
In the second example, I force the record separator to be only the new
line character (the output from 'echo'. I can probably use \n, but I
wanted to play it safe). Do mind the wrapping of the second form in
parenthesis, otherwise you clobber your global IFS, which is something
you want to avoid.
--
Oded
::..
We make a living by what we get, but we make a life by what we give.
-- Winston Churchill
Thanks to everyone for the help, all solution worked.
To sum up the tips:
By Oded Arbel:
a. Use a subshell to avoid mistakenly over riding your shell variables.
b. Use "$(echo)" as portable(?) newline variable scripting style.
By Ehud Karni:
a. Pipeing into bash subshell can be accepted inside the shell with read.
b. using a "while read VAR1 VAR2 VAR3..." is a convenient method to
accepting stdin data.
c. awk has system() !!
By Amos Shapira:
a. General work around is to construct the whole command as text, then
use either piping to sh or bash buildin "expr".
By Omer Shapira:
a. xargs -n switch can be used to "collect" variables separated by
either of [\n\t ].
By Valery Reznic:
a. set -- "space delimited word list" can be used as a quick method
for assigning value to number variables ($1..$9). [question: Really?
this does not seem to work for me].
b. bash while loop can get stdin from file IO redirection.
Ariel Biener doesn't understand the need for voodoo in modern life... ;)
Thanks guys for an educational thread.
Maxim.
--
Cheers,
Maxim Vexler
"Free as in Freedom" - Do u GNU ?
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