CentOS - Oct 2008 - script question

On Wed, October 15, 2008 10:48 am, Jerry Geis wrote:
> Hi all,
>
> I am trying to create a script that takes an entire file,
> drops the first 19 characters from each line and creates a new file.
>
> I am missing something easy but I am not seeing it.
>
> Jerry
>
> ---
> I tried the script below but did not work.
>
> rm  output.txt
> cat test.txt | \
> while read LINE
> do
>         newline=`echo $LINE | cut -f 19-`
>         echo $newline >> output.txt
> done
>
> test.txt is below
> 10-Oct-08 08:14 am  10
> 10-Oct-08 08:20 am  20
> 10-Oct-08 08:24 am  30
> 10-Oct-08 08:29 am  40
> 10-Oct-08 08:34 am  50
> 10-Oct-08 08:39 am  60
> 10-Oct-08 08:44 am  80
> 10-Oct-08 08:49 am  10
> 10-Oct-08 08:54 am  10
> 10-Oct-08 08:56 am  10
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
Instead of using cut -f use cut -c19-

Hi all,

I am trying to create a script that takes an entire file,
drops the first 19 characters from each line and creates a new file.

I am missing something easy but I am not seeing it.

Jerry

---
I tried the script below but did not work.

rm  output.txt
cat test.txt | \
while read LINE
do
        newline=`echo $LINE | cut -f 19-`
        echo $newline >> output.txt
done
           
test.txt is below 
10-Oct-08 08:14 am  10
10-Oct-08 08:20 am  20
10-Oct-08 08:24 am  30
10-Oct-08 08:29 am  40
10-Oct-08 08:34 am  50
10-Oct-08 08:39 am  60
10-Oct-08 08:44 am  80
10-Oct-08 08:49 am  10
10-Oct-08 08:54 am  10
10-Oct-08 08:56 am  10

Hello Jerry-

Simply change the line:

         newline=`echo $LINE | cut -f 19-`

to this:

         newline=`echo $LINE | cut -c 19-`

You want to cut based on 'c'haracters, not 'f'ields.  :-)

Tim Nelson
Systems/Network Support
Rockbochs Inc.
(218)727-4332 x105

----- "Jerry Geis" <geisj at pagestation.com> wrote:
> Hi all,
> 
> I am trying to create a script that takes an entire file,
> drops the first 19 characters from each line and creates a new file.
> 
> I am missing something easy but I am not seeing it.
> 
> Jerry
> 
> ---
> I tried the script below but did not work.
> 
> rm  output.txt
> cat test.txt | \
> while read LINE
> do
>         newline=`echo $LINE | cut -f 19-`
>         echo $newline >> output.txt
> done
>            
> test.txt is below 
> 10-Oct-08 08:14 am  10
> 10-Oct-08 08:20 am  20
> 10-Oct-08 08:24 am  30
> 10-Oct-08 08:29 am  40
> 10-Oct-08 08:34 am  50
> 10-Oct-08 08:39 am  60
> 10-Oct-08 08:44 am  80
> 10-Oct-08 08:49 am  10
> 10-Oct-08 08:54 am  10
> 10-Oct-08 08:56 am  10
>  
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

> I am trying to create a script that takes an entire file,
> drops the first 19 characters from each line and creates a new file.
> 
> I am missing something easy but I am not seeing it.
> 
> Jerry
> 
> ---
> I tried the script below but did not work.
> 
> rm  output.txt
> cat test.txt | \
> while read LINE
> do
>        newline=`echo $LINE | cut -f 19-`
>        echo $newline >> output.txt
> done
>           test.txt is below 10-Oct-08 08:14 am  10
why not simply

cut -b10- foo > bar

t

Hi,

On Wed, Oct 15, 2008 at 10:48, Jerry Geis <geisj at pagestation.com>
wrote:
> I am trying to create a script that takes an entire file,
> drops the first 19 characters from each line and creates a new file.
>       newline=`echo $LINE | cut -f 19-`
What you want is "cut -c 19-" (-c as in characters) and not "cut
-f
19-" (-f as in fields).
>       echo $newline >> output.txt
This will also remove the spacing. You should at least use echo
"$newline" >>output.txt, but in any case it's silly as you
can just:

cut -c 19- <test.txt >output.txt

HTH,
Filipe

Jerry Geis wrote:
> Hi all,
>
> I am trying to create a script that takes an entire file,
> drops the first 19 characters from each line and creates a new file.
[..]
> test.txt is below
> 10-Oct-08 08:14 am  10
If this is the format of your data you could use awk to do the same
thing

cat filename | awk '{print $4}'

nate