Sorry about that. I meant to say that using for line in $(cat file) is bad because it might not split up into lines properly.
From: "JD" <jd1008@xxxxxxxxx>
To: "Community support for Fedora users" <users@xxxxxxxxxxxxxxxxxxxxxxx>
Sent: Monday, January 16, 2012 3:34:37 PM
Subject: Re: OT: bash script - unexpected exit
On Mon, Jan 16, 2012 at 1:25 PM, Andre Speelmans <fedora-list@xxxxxxxxx> wrote:
> On Mon, Jan 16, 2012 at 8:55 PM, JD <jd1008@xxxxxxxxx> wrote:
>> What exactly were you trying to accomplish using cat?
>
> I was not trying, the OP had a script that did a:
> cat file | while read line; do something done
>
> Matthew commented that you should not rely on cat for reading a file
> line by line and I was curious as to why not. The example Matthe gave:
>
> while read; do something; done < file
>
> would have been my preferred way, but I was curious as to whether
> there was a specific reason to not rely on cat. So far cat always gave
> me the contents of the file, after all, and as such seemed pretty
> reliable.
>
>
> --
> Regards,
>
> André
>
I see! Thanx for elucidating.
The second method you state should be like this
while read line; do
Something with "$line"
done < file
Cheers,
JD
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To: "Community support for Fedora users" <users@xxxxxxxxxxxxxxxxxxxxxxx>
Sent: Monday, January 16, 2012 3:34:37 PM
Subject: Re: OT: bash script - unexpected exit
On Mon, Jan 16, 2012 at 1:25 PM, Andre Speelmans <fedora-list@xxxxxxxxx> wrote:
> On Mon, Jan 16, 2012 at 8:55 PM, JD <jd1008@xxxxxxxxx> wrote:
>> What exactly were you trying to accomplish using cat?
>
> I was not trying, the OP had a script that did a:
> cat file | while read line; do something done
>
> Matthew commented that you should not rely on cat for reading a file
> line by line and I was curious as to why not. The example Matthe gave:
>
> while read; do something; done < file
>
> would have been my preferred way, but I was curious as to whether
> there was a specific reason to not rely on cat. So far cat always gave
> me the contents of the file, after all, and as such seemed pretty
> reliable.
>
>
> --
> Regards,
>
> André
>
I see! Thanx for elucidating.
The second method you state should be like this
while read line; do
Something with "$line"
done < file
Cheers,
JD
--
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
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Have a question? Ask away: http://ask.fedoraproject.org
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