Grep with special Characters

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# 1  
Old 01-05-2012
Grep with special Characters

Need Help For GREP

I have a file say g1.txt and content of file is below

REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoDrives /t REG_DWORD /d 4 /f ,
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoClose /t REG_DWORD /d 1 /f ,
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v NoDispCPL /t REG_DWORD /d 1 /f ,
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explore\HideDesktopIcons\NewStartPanel" /v {20D04FE0-3AEA-1069-A2D8-08002B30309D} /t REG_DWORD /d 0 /f , 
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v DisallowRun /t REG_DWORD /d 1 /f , 
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddRemovePrograms /t REG_DWORD /d1 /f ,

I want to check the string
"REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoDrives /t REG_DWORD /d 4 /f" already exists or not in g1.txt file...using grep command..

# 2  
Old 01-05-2012
grep '"REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoDrives /t REG_DWORD /d 4 /f" ' filename

will give you the line at which this pattern was found

if u want to find the no of times this string occured use -c option
grep -c searchstring filename


Moderator's Comments:
Mod Comment How to use code tags

Last edited by Franklin52; 01-05-2012 at 07:56 AM.. Reason: Please use code tags for code and data samples, thank you
# 3  
Old 01-05-2012
It's not working.....String containing special characters like ",{,\" so that it could not find the match
# 4  
Old 01-05-2012
Try this,

grep 'REG ADD \"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\" \/v NoDrives \/t REG_DWORD \/d 4 \/f' filename

# 5  
Old 01-05-2012
if you specify anything within single quotes doesn't matter even the special characters will be treated as a character only

did you tried that ?

---------- Post updated at 06:00 PM ---------- Previous update was at 05:59 PM ----------

see this example
$ grep '<dir>' *
file.xml:       <dir>
file.xml:       <dir>
file.xml:       <dir>
file.xml:       <dir>    echo -e "\t<dir>" >> file.xml

Last edited by Scott; 01-05-2012 at 09:34 AM.. Reason: Please use code tags
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