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Top Forums Shell Programming and Scripting Please suggest alternative to grep Post 302652263 by niladri29 on Thursday 7th of June 2012 12:38:44 AM
Old 06-07-2012
Please suggest alternative to grep

Hi Experts,
PFB my requirement:
I have a file (named file1) containing numbers like:
Code:
372846078543002
372846078543003
372846078543004
372846078543005
372846078543006

I have another file (nemed file2)where lines containing these numbers(present in file1) are present; Eg:
Code:
lppza087; [2012-06-05 03:00:01,090] <PERFB  > JMSId :ID:414d51204c50505a41303837202020204f657ff1299e7bb7 SvcName :realtime.get.relationship Port :Port1 LobId :AMCSGCDERTUSUSD Card :372846078543002 SrcCd :16 versionNum :3.0 OO [MessageListenerThreadPool : 11  ] OO dao.CustDAO                       OO                 getRelnDetails() OO Entry : getRelnDetails
lppza087; [2012-06-05 03:00:01,100] <PERFB  > JMSId :ID:414d51204c50505a41303837202020204f657ff1299e7bb7 SvcName :realtime.get.relationship Port :Port1 LobId :AMCSGCDERTUSUSD Card :372846078543003 SrcCd :16 versionNum :3.0 OO [MessageListenerThreadPool : 11  ] OO dao.CustDAO                       OO                 getRelnDetails() OO Exit  : getRelnDetails

I need to grep all those lines present in file1 from the other file (file2).
One way will be to run a for loop on file1 and grep in file2. But my data volume is very high an it's taking 5-6 hours.
Can you please suggest the fastest way to achieve this (may be using awk/sed)

Last edited by Franklin52; 06-07-2012 at 04:01 AM.. Reason: Please use code tags
 

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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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