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  #1 (permalink)  
Old 04-25-2007
IHulky IHulky is offline
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Sed command with characters

Hi everyone, I hope that someone can help me out:

In the following line:

PRIHDR;2809999444;2007 6.1;20070423;9;;4021473000003;;4021473000003;8714231530688;EUR;;

The output should be:

PRIHDR;2809999444;2007 6.1;20070423;4;;4021473000003;;4021473000003;8714231530688;EUR;;

I've tried some variations on the following command:

sed 's/;9;;/;4;;' <oldfile>newfile

When I run this command it tells met what to do with the ";" how can I solve this issue?

Thanks in advance,

IHulky

p.s. the other lines in the document (line 2 and further) have to be copied as well to the new file.

Last edited by IHulky; 04-25-2007 at 07:57 PM..
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Old 04-25-2007
ghostdog74 ghostdog74 is offline Forum Advisor  
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you can use awk? say you only have that line in a file
Code:
# awk -F ";" 'OFS=";"{$5=4;print}' file
PRIHDR;2809999444;2007 6.1;20070423;4;;4021473000003;;4021473000003;8714231530688;EUR;;
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Old 04-25-2007
IHulky IHulky is offline
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Quote:
Originally Posted by ghostdog74
you can use awk? say you only have that line in a file
Code:
# awk -F ";" 'OFS=";"{$5=4;print}' file
PRIHDR;2809999444;2007 6.1;20070423;4;;4021473000003;;4021473000003;8714231530688;EUR;;
That worked perfectly thanks, can you tell me how to keep the command on the first line. In the lines below some characters have been altered to 4.

If it is any helpfull only the first line starts with PRIHDR

Thanks
  #4 (permalink)  
Old 04-25-2007
ghostdog74 ghostdog74 is offline Forum Advisor  
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Code:
awk -F ";" 'BEGIN {OFS = ";"} /^PRIHDR/{$5=4;print}  ' file
  #5 (permalink)  
Old 04-25-2007
IHulky IHulky is offline
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Have to test it further, when I run the command it prints the correct output on screen, although the file itself isn't altered.

Thanks for the info, have to test it further tomorrow as it is 02:30 in the morning here in the Netherlands and work starts at 08:00..

If you have any idea's I love to hear them.

Thanks again
  #6 (permalink)  
Old 04-25-2007
ghostdog74 ghostdog74 is offline Forum Advisor  
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awk does not alter files, unless you ask it to. you can just redirect the output to another file using the redirect sign ( "awk command" > anotherfile)
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Old 04-26-2007
anbu23 anbu23 is offline Forum Advisor  
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Quote:
Originally Posted by IHulky
Hi everyone, I hope that someone can help me out:

In the following line:

PRIHDR;2809999444;2007 6.1;20070423;9;;4021473000003;;4021473000003;8714231530688;EUR;;

The output should be:

PRIHDR;2809999444;2007 6.1;20070423;4;;4021473000003;;4021473000003;8714231530688;EUR;;

I've tried some variations on the following command:

sed 's/;9;;/;4;;' <oldfile>newfile

When I run this command it tells met what to do with the ";" how can I solve this issue?

Thanks in advance,

IHulky

p.s. the other lines in the document (line 2 and further) have to be copied as well to the new file.
Add slash
Code:
sed '/^PRIHDR/s/;9;;/;4;;/' <oldfile >newfile
mv newfile oldfile
Code:
perl -i -ne ' s/;9;;/;4;;/ if ( /^PRIHDR/ ); print ' file
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