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Top Forums Shell Programming and Scripting Sed/awk/perl command to replace pattern in multiple lines Post 302747313 by Kashyap on Friday 21st of December 2012 04:16:51 AM
Old 12-21-2012
Hi Sathyaonunix

Dear sathyaonunix,
Consider that the pattern that you have changed are different ie., say
XXX1
XXX2
XXX3

and these might be the contents of a file say file2.txt
now can you please help me to replace the pattern Sathya in file1 with the three patterns of file2.txt.

And what if the contents of file1 that contains
nl file 1 Sathya 2 Sathya 3 Sathya 4 Sathya 5 SAthya 6 Narayanan 7 Narayanan 8 Sathya 9 Sathya 10 Narayanan might not have a key and might be arranged in a singel line like this,
sathya sathya sathya sathya sathya Narayanan Narayanan Sathya sathya Narayanan

Please suggest me how to replace if we encounter such a problem,

Thanks,
Kashyap.



Thanks,
Kashyap.
 

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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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