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Top Forums Shell Programming and Scripting Grep a pattern given in one file at other file and display its corresponding contents as output. Post 302498453 by abinash on Monday 21st of February 2011 11:01:40 AM
Old 02-21-2011
Thanks for your contribution.
I am facing one more challenge. Please help me.

My proposed system is as follows.

eg:

I have two files say aaa.txt and bbb.txt.

aaa.txt with list of patterns in double quotes and its corresponding output which has to be displayed.
Code:
"this is the line1"=line one found
"this is the line2"=line two found

bbb.txt with lot of lines. eg:
Code:
"This is a test message which contains rubbish information just to fill the page which is of no use.
 this is the line1 which is suppose to be grepped and displayed as a output.
this is the line2 with specific pattern AABCDEFGHI which is to be grepped"

Requirement 1 : my requirement is to search the pattern given in double quotes in aaa.txt at bbb.txt and if it exists in bbb.txt, the corresponding pattern after = sign in aaa.txt should be displayed.

Requirement 2 : If there is any line which has a 10 digit pattern starts with AA, the entire pattern has to be displayed. If there is no such pattern, this requirement can be ignored.

Eg output:
Code:
2: line one found
3: AABCDEFGHI

Right now i am provided withe code to get Requirement 1 with line number. Please help me to get requirement 2.

Code:
 awk -F"[\"=]" 'NR==FNR{a[$2]=$4;next} {for (i in a){if($0 ~ i){print FNR" : "a[i]}}}' aa.txt bb.txt


Last edited by Franklin52; 02-22-2011 at 03:06 AM.. Reason: Please use code tags, thank you
 

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RDUP-UP(1)							       rdup								RDUP-UP(1)

NAME
rdup-up - update a directory tree with a rdup archive SYNOPSIS
rdup-up [OPTION]... DIRECTORY DESCRIPTION
With rdup-up you can update an (possibly) existing directory structure with a rdup archive. The rdup archive has to be given to rdup-up's standard input. Username and uids rdup outputs both the username and uid, the receiving system (which may be a totally different system) checks if the username and uid match. If the username and uid don't match the (numeric) uid is used on the file. The same holds true for the groupname and gid. OPTIONS
-n Do a dry-run and do not create anything on disk. -t Create DIRECTORY (ala mkdir -p) if it does not exist. -s N Strip N path components from a pathname. If the resulting pathname is empty after this operation it is skipped. Be careful however with the following structure: /foo /foo/bar /foo/bar/bla.txt /foo/blork/bla.txt With rdup-up -s2 this will leave: <empty> <empty> /bla.txt /bla.txt And the last 'bla.txt' will overwrite the previous one, this will happen without warnings. -r PATH This option is related to the -s option, but works different. The string PATH is removed from (the beginning of) each pathname. With -r /home/backup the pathname /home/backup/bin/mycmd becomes /bin/mycmd. The same could be done with -s 2, but then you need to count the slashes. Note -s is always performed before -r. -v Be more verbose and echo the processed files to standard output. -vv Be even more verbose and echo processed file and the uid and gid information to standard output. -T Show a table of contents of the rdup stream received (ala tar -tf -). With -T the directory argument is optional. -T unsets any verbose (-v) options. -h A short help message. -V Show the version. EXIT CODE
rdup-up return a zero exit code on success, otherwise 1 is returned. AUTHOR
Written by Miek Gieben. REPORTING BUGS
Report bugs to <miek@miek.nl>. SEE ALSO
http:/www.miek.nl/projects/rdup/ is the main site of rdup. Also see rdup(1), rdup-tr(1) and rdup-backups(7). COPYRIGHT
Copyright (C) 2005-2010 Miek Gieben. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Licensed under the GPL version 3. See the file LICENSE in the source distribution of rdup. 1.1.11 13 Dec 2008 RDUP-UP(1)
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