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Old 11-04-2005, 03:47 AM   #1
Paul_R
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merge two files


Hi Guys,

Im trying to create a backup mailserver for some cpanel servers.

This involves a file on backup server (/etc/secondarymx) containing the contents of a file (/etc/localdomains) from each other server wishing to use it.

I can copy the "localdomains" file over to the backup server which is fine but how do I merge the file contents to the "secondarymx" file without creating duplicate data.

The files are just domain lists with line breaks i.e.
domain1
domain2
domain3...

Thanks,

Paul

Last edited by Paul_R; 11-04-2005 at 04:45 AM.
 
Old 11-04-2005, 04:37 AM   #2
ashamril
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# cat localdomains >> secondarymx
 
Old 11-04-2005, 04:46 AM   #3
Paul_R
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Quote:
Originally posted by ashamril
# cat localdomains >> secondarymx
Sorry, I meant merge not append, I have edited my post.
 
Old 11-04-2005, 06:19 AM   #4
ns_sanish
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after appending do a "sort -u" on the file to remove dups
 
Old 11-04-2005, 06:46 AM   #5
Paul_R
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Quote:
Originally posted by ns_sanish
after appending do a "sort -u" on the file to remove dups
Hi,

Thanks for your help

I ran "sort -u data3" data3 being the final output file, it sorts it on the screen however does not write this to the file so data3 remains with duplicates.
 
Old 11-04-2005, 06:56 AM   #6
ns_sanish
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ofcourse u will have to redirect the output of sort to another file and then overwrite the original with the new one.

sort -u secondarymx > secondarymx.tmp
mv secondarymx.tmp secondarymx
 
Old 11-04-2005, 07:15 AM   #7
Paul_R
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Quote:
Originally posted by ns_sanish
ofcourse u will have to redirect the output of sort to another file and then overwrite the original with the new one.

sort -u secondarymx > secondarymx.tmp
mv secondarymx.tmp secondarymx
Thank you very much
 
  


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