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Top Forums Shell Programming and Scripting Want to print out lines with a matching pattern from file Post 302892132 by MonikaB on Tuesday 11th of March 2014 06:10:00 AM
Old 03-11-2014
Want to print out lines with a matching pattern from file

Hi all,

I want to search for strings in file1 that can be found in file2 and print out the whole line when matching pattern is found.

I have used the below command, but this is not working for me, because it is writing out only the matching patterns from file2, not the whole line.

fgrep -o -f file1 file2 > output

For a better understanding this is how my files are looking like

file1
b
c
e
g

file2
a 1
b 2
c 3
e 4
f 5
g 6
h 7

so I would like to have in the output
b 2
c 3
e 4
g 6

Would you have any suggestion how could I use grep/fgrep for this situations? Or maybe another command like awk or sed?Many thanks in advance for your help.
 

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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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