Grep to find lines matching given patern in a file


 
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# 1  
HP Grep to find lines matching given patern in a file

When I try with patern matching in a file with below code works

Code:
cat scj_drive_commands | egrep '/app/oracle/build_lib/pkg32|/app/oracle/build_lib/pkg33'


But when I have code with patern searching using of below does not work !

Code:
cat scj_drive_commands | egrep '/app/oracle/build_lib/pkg32*2012*|/app/oracle/build_lib/pkg33*2012*'

The sample file will look like;
Code:
# == Regular Build == Pre-processing
/app/oracle/build_lib/pkg320.0_20120927/ddl/scj_build_pre_rt.sh SID TEST_NUM 20120927 320.0 N N
# == Regular Build == Processing
/app/oracle/build_lib/pkg320.0_20120927/ddl/scj_build.sh SID TEST_NUM 20120927 320.0 N Y

# == Regular Build == Pre-processing - PROFIT!!!! - change goes into DEC MR pkg313
#/app/oracle/build_lib/pkg320.0_20121004_prof/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121004_prof 320.0 N N

# == Regular Build == Pre-processing
/app/oracle/build_lib/pkg320.0_20121004/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121004 320.0 N N
# == Regular Build == Processing
/app/oracle/build_lib/pkg320.0_20121004/ddl/scj_build.sh SID TEST_NUM 20121004 320.0 N Y

# == Regular Build == Pre-processing
/app/oracle/build_lib/pkg320.0_20121011/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121011 320.0 N N
# == Regular Build == Processing
/app/oracle/build_lib/pkg330.0_20121011/ddl/scj_build.sh SID TEST_NUM 20121011 320.0 N Y

# == Regular Build == Pre-processing
/app/oracle/build_lib/pkg330.0_20121018/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121018 320.0 N N
# == Regular Build == Processing
/app/oracle/build_lib/pkg330.0_20121018/ddl/scj_build.sh SID TEST_NUM 20121018 320.0 N Y

# 2  
Seems you are missing several dots in front of the stars, if you want to have any number of any type of character:
Code:
egrep '/app/oracle/build_lib/pkg32.*2012.*|/app/oracle/build_lib/pkg33.*2012.*' scj_drive_commands

The cat is not needed. grep takes a file as argument on it's own.
This User Gave Thanks to zaxxon For This Post:
# 3  
Quote:
Originally Posted by zaxxon
Seems you are missing several dots in front of the stars, if you want to have any number of any type of character:
Code:
egrep '/app/oracle/build_lib/pkg32.*2012.*|/app/oracle/build_lib/pkg33.*2012.*' scj_drive_commands

The cat is not needed. grep takes a file as argument on it's own.
It is HP-Unix Environment.


I do not understand, why should we put . dot before * asterisk.

Last edited by Siva SQL; 05-03-2013 at 03:37 AM.. Reason: Given command is working
# 4  
This should work:
Code:
$ grep '/app/oracle/build_lib/pkg3[23].*2012' scj_drive_commands
/app/oracle/build_lib/pkg320.0_20120927/ddl/scj_build_pre_rt.sh SID TEST_NUM 20120927 320.0 N N
/app/oracle/build_lib/pkg320.0_20120927/ddl/scj_build.sh SID TEST_NUM 20120927 320.0 N Y
#/app/oracle/build_lib/pkg320.0_20121004_prof/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121004_prof 320.0 N N
/app/oracle/build_lib/pkg320.0_20121004/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121004 320.0 N N
/app/oracle/build_lib/pkg320.0_20121004/ddl/scj_build.sh SID TEST_NUM 20121004 320.0 N Y
/app/oracle/build_lib/pkg320.0_20121011/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121011 320.0 N N
/app/oracle/build_lib/pkg330.0_20121011/ddl/scj_build.sh SID TEST_NUM 20121011 320.0 N Y
/app/oracle/build_lib/pkg330.0_20121018/ddl/scj_build_pre_rt.sh SID TEST_NUM 20121018 320.0 N N
/app/oracle/build_lib/pkg330.0_20121018/ddl/scj_build.sh SID TEST_NUM 20121018 320.0 N Y

The .* means "zero or more of any character". It's the "filler" between 32 and 2012.
This User Gave Thanks to hanson44 For This Post:
 

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