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Unix file comparison [message #179863]

Thu, 29 June 2006 02:13

Brayan
Messages: 315
Registered: June 2002

Senior Member

Hi,

I need some help in unix scripting.

I've 2 files.

"File1" contents like:
1
2
3
4
5

"File2" contents like:
1
4
2
5

I need a output in "File3" as :

3

Here 3 is missing in "File2"

Thanking you in advance,
Ronald.

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Re: Unix file comparison [message #179869 is a reply to message #179863]

Thu, 29 June 2006 02:37

tarundua
Messages: 1080
Registered: June 2005
Location: India

Senior Member


 diff file1 file2 > file3

For more details ....

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Re: Unix file comparison [message #179871 is a reply to message #179869]

Thu, 29 June 2006 02:46

Brayan
Messages: 315
Registered: June 2002

Senior Member

Hi,

In this case I get output like3d2
3d2
< 3

Instead I want just
3

Thankx.

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Re: Unix file comparison [message #180037 is a reply to message #179871]

Thu, 29 June 2006 21:48

rleishman
Messages: 3728
Registered: October 2005
Location: Melbourne, Australia

Senior Member

You may need to sort the files first:

sort file1 > file1a
sort file2 > file2a

Then use comm

comm -23 file1a file2a  # lines that only appear in file1a
comm -13 file1a file2a  # lines that only appear in file2a

Ross Leishman

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Re: Unix file comparison [message #180071 is a reply to message #179863]

Fri, 30 June 2006 01:58

Brayan
Messages: 315
Registered: June 2002

Senior Member

Hi Ross Leishman ,

Thankx very much.. it'd worked.

Brayan.

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