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Full Discussion: Compare two files in UNIX
Top Forums Shell Programming and Scripting Compare two files in UNIX Post 302543985 by forums123456 on Tuesday 2nd of August 2011 03:32:39 PM
Old 08-02-2011
Compare two files in UNIX

Hi,

I have two files

File1 Contents:
abc
dcf
sdc

File2 Contents:
dcf
sdc
erg

Now my program should return the contents existing in File1 but not in File2. In this case output shoud be "abc" as abc is not available in File 2. It should not return "erg" by saying it is existing in File2 and not in File1.
Only File1 Contents not existing in File2 should be displayed. Is there any command to solve this.

Appreciate you assistance in advance...
 

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CP(1)							      General Commands Manual							     CP(1)

NAME
cp - copy SYNOPSIS
cp [ -ip ] file1 file2 cp [ -ipr ] file ... directory DESCRIPTION
File1 is copied onto file2. By default, the mode and owner of file2 are preserved if it already existed; otherwise the mode of the source file modified by the current umask(2) is used. The -p option causes cp to attempt to preserve (duplicate) in its copies the modification times and modes of the source files, ignoring the present umask. In the second form, one or more files are copied into the directory with their original file-names. Cp refuses to copy a file onto itself. If the -i option is specified, cp will prompt the user with the name of the file whenever the copy will cause an old file to be overwrit- ten. An answer of 'y' will cause cp to continue. Any other answer will prevent it from overwriting the file. If the -r option is specified and any of the source files are directories, cp copies each subtree rooted at that name; in this case the destination must be a directory. SEE ALSO
cat(1), mv(1), rcp(1C) 4th Berkeley Distribution June 8, 1985 CP(1)
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