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Top Forums UNIX for Dummies Questions & Answers To get unique numbers from two files Post 302203411 by radoulov on Sunday 8th of June 2008 05:47:21 PM
Old 06-08-2008
Quote:
Originally Posted by i.scientist
Awesome!!!

Both worked but not sorted..but thats fine.

awk command did not work on command line, but when i put that in script and executed, it worked : any reason ?
What was the error?

Quote:
perl worked well.

can i sort them too ? in asingle command ?
With perl:

Code:
perl >file3 -nle'$_{$_}++;END{print join "\n", sort keys %_}' file1 file2

But you don't need perl and awk when sort or uniq are sufficient
(see my previous post).

P.S. If you use uniq you should sort the input first.

Last edited by radoulov; 06-08-2008 at 07:01 PM..
 

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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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