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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 302488199 by abinash on Sunday 16th of January 2011 01:06:53 AM
Old 01-16-2011
Grep a pattern given in one file at other file and display its corresponding contents as output.

*****************************************
Right now i have this current system.

I have two files say xxx.txt and yyy.txt. xxx.txt is with list of patterns within double quotes. Eg.
Code:
"this is the line1"
"this is the line2"

The yyy.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."

My output is to search the pattern given in xxx.txt at yyy.txt and display the corresponding line as output.

Eg output: this is the line1 which is suppose to be grepped and displayed as a output.

The following script does this.(thanks rdcwayx for giving this solution)
Code:
awk -F \" 'NR==FNR {a[$2];next} {for (i in a) if ($0 ~ i) print }'  xxx.txt yyy.txt

*****************************************

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."

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.

Eg output: line one found

Please let me know if i am not clear.

Last edited by Franklin52; 02-22-2011 at 03:05 AM.. Reason: Please use code tags, thank you
 

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bntext(5)							File Formats Manual							 bntext(5)

NAME
bnmotd.txt, bnnews.txt bnissue.txt - messages for the Unix Battle.net daemon DESCRIPTION
The file bnmotd.txt contains text displayed by bnetd(1), when users first log into the server. The file bnnews.txt contains text displayed when the user uses the /news chat command. The files consist of raw text with printf-style formatting escapes. Each line of a file can contain a type formatter from the following list: %B Use the broadcast attribute (???). %C Execute the line as if the user entered it as a command. %E Use the error attribute (red). %I Use the info attribute (yellow). This is the same was %W. %M Normal chat message (white). This will appear as if the user said it. %T Emote chat message (???). This will appear as if the user said it. %W Use the warning attribute (yellow). This is the same was %I. Within a line, any of the following format formatters may be used: %% Expand to a literal percent sign (%). %a Expand to the number of accounts on the server. %c Expand to the number of channels on the server. This includes all permanent and current temporary channels. %g Expand to the number of games on the server. This includes both public and private (passworded) games. %h Expand to the hostname of the server (as returned by gethostname(2)). %i Expand to this user's account ID number, formatted with a leading pound (#) sign and leading zeros. %l Expand to this user's current chat name which is usually the same %r Expand to the IP of the remote machine (the client). %t Expand to four character client tag. %u Expand to the number of users logged into the server. %v Expand to the version number of the server. SEE ALSO
bnetd(1) AUTHOR
Ross Combs (ross@bnetd.org) 2 August, 2001 bntext(5)
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