* cat file|while read behaves not as expected
@ 2002-09-16 6:32 Micha Holzmann
2002-09-16 6:52 ` Paul Lew
0 siblings, 1 reply; 3+ messages in thread
From: Micha Holzmann @ 2002-09-16 6:32 UTC (permalink / raw)
To: zsh-users
[-- Attachment #1: Type: text/plain, Size: 694 bytes --]
Hello,
i am new with zsh. I recently switched from bash to zsh. Now i stuck in
a little problem.
I use a file as configuration for a script. I read this file via cat and pipe
the result to while read...
The file content (example) is:
>--- cut here ----
1 2 3 4 5
>--- cut here ----
My script (a fragment from):
>--- cut here ----
#!/bin/zsh
cat ./tst.dat|while read line
do
for i in $line
do
echo $i
done
done
>--- cut here ----
If i run this script, it prints "1 2 3 4 5" as result, if i change the
shell to /bin/sh, it prints (te expected) result:
1
2
3
4
5
What is the fault i make?
Thanks in advance for any respones,
kind regards,
Micha Holzmann
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: cat file|while read behaves not as expected
2002-09-16 6:32 cat file|while read behaves not as expected Micha Holzmann
@ 2002-09-16 6:52 ` Paul Lew
2002-09-16 7:45 ` Micha Holzmann
0 siblings, 1 reply; 3+ messages in thread
From: Paul Lew @ 2002-09-16 6:52 UTC (permalink / raw)
To: Micha Holzmann; +Cc: zsh-users
>>>>> "Micha" == Micha Holzmann <holzmann@mhnet.de> writes:
Micha> #!/bin/zsh
Micha> cat ./tst.dat|while read line
Micha> do
Micha> for i in $line
Micha> do
Micha> echo $i
Micha> done
Micha> done
Micha> If i run this script, it prints "1 2 3 4 5" as result, if i
Micha> change the shell to /bin/sh, it prints (te expected)
Micha> result:
Micha> 1
Micha> 2
Micha> 3
Micha> 4
Micha> 5
Micha> What is the fault i make?
if you say:
for i in $=line
it will do what you want. Basically, the variable i will contain the
"1 2 3 4 5", unless you told it to split word, the entire entry is
will be used on variable expansion. This is what zsh does it
correctly compare to other shells, but also a problem with
compatibility :-)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: cat file|while read behaves not as expected
2002-09-16 6:52 ` Paul Lew
@ 2002-09-16 7:45 ` Micha Holzmann
0 siblings, 0 replies; 3+ messages in thread
From: Micha Holzmann @ 2002-09-16 7:45 UTC (permalink / raw)
To: Paul Lew; +Cc: zsh-users
[-- Attachment #1: Type: text/plain, Size: 587 bytes --]
Hello Paul,
Quoting Paul Lew <paullew@cisco.com>:
> if you say:
>
> for i in $=line
>
> it will do what you want. Basically, the variable i will contain the
> "1 2 3 4 5", unless you told it to split word, the entire entry is
> will be used on variable expansion. This is what zsh does it
> correctly compare to other shells, but also a problem with
> compatibility :-)
so many thanks! Now my script runs how i expect it.
Also thanks to David Hughes!
Kind regards,
Gruss,
Micha Holzmann
--
My software never has bugs. It just develops random features.
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2002-09-16 7:45 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-09-16 6:32 cat file|while read behaves not as expected Micha Holzmann
2002-09-16 6:52 ` Paul Lew
2002-09-16 7:45 ` Micha Holzmann
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).