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Unable to grep control/non printable characters

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Top Forums Shell Programming and Scripting Unable to grep control/non printable characters
# 1  
Old 02-01-2012
Unable to grep control/non printable characters
Quote:
[root@server1 ~]# grep -r -w "reg.1.random" /test/ --include=x*.cfg
/test/test2/test3/x201.cfg:reg.1.random="^^^613*"
/test/x710.cfg:reg.1.random="a63BVTieQP5x"
/test/x201.cfg:reg.1.random="^^^613*"
/test/x240.cfg:reg.1.random="E20oCC4wgHbB"
/test/x205.cfg:reg.1.random="fG1jAXor43SM"
/test/x202.cfg:reg.1.random="h24cgSOqFP8K"
Unable to grep:
Quote:
[root@server1 ~]# grep -r -w "reg.1.random" /test/ --include=x*.cfg| grep '^^^613*'
Able to grep:
Quote:
[root@server1 ~]# grep -r -w "reg.1.random" /test/ --include=x*.cfg| grep 'h24cgSOqFP8K'
/test/x202.cfg:reg.1.random="h24cgSOqFP8K"
Last edited by proactiveaditya; 02-01-2012 at 10:28 AM..
# 2  
Old 02-01-2012
^ and * have special meanings to grep. Escape them like \^\^\^613\*"
# 3  
Old 02-01-2012
I have rectified my post...i had used single quotes ''
# 4  
Old 02-01-2012
^ and * still have special meanings to grep. Escape them.
This User Gave Thanks to Corona688 For This Post:
proactiveaditya
# 5  
Old 02-01-2012
But unable to search and replace
Quote:
perl -pi -e s/^^^613*/abcdefg/g /test/x201.cfg
Quote:
[root@server1 ~]# grep -r -w "reg.1.random" /test/ --include=x*.cfg
/test/test2/test3/x201.cfg:reg.1.random="^^^613*"
/test/x710.cfg:reg.1.random="3gUIoPKD7pa3"
/test/x201.cfg:reg.1.random="^^^613*"
/test/x240.cfg:reg.1.random="irAA6M8UT8gh"
/test/x205.cfg:reg.1.random="NA601EFesktM"
/test/x202.cfg:reg.1.random="GSF96BqBwh9w"
# 6  
Old 02-01-2012
^ and * have special meanings in perl regular expressions, too.

Escape them!
This User Gave Thanks to Corona688 For This Post:
proactiveaditya
# 7  
Old 02-01-2012
lol
Plus, in old shells, the '^' character is the same as a pipe:
Code:
$/bin/sh
$ who|wc -l
       9
$ who^wc -l
       9
$

So I would listen to Corona688! lol
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