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Matching single quote in a regular expression

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Top Forums Shell Programming and Scripting Matching single quote in a regular expression
# 8  
Old 05-22-2011
Code:
# Lets print the file contents 

C:\Users\Ninz\Desktop>type a.txt
This is a fake file

$ENV{'ORACLE_HOME'} = "/home/oracle/product/10.1.0/db_1" ;

this is the last line

# using windows , using different separator "|" instead of "/" so that you dont have to escape every "/" in path 

# Adding "-i.bak" because in windows it throws error if you try to modify file without taking backup 

C:\Users\Ninz\Desktop>perl -pi.bak -e "s|\$ENV{'ORACLE_HOME'} \= \"/home/oracle/
product/10.1.0/db_1\"| \$ENV{'ORACLE_HOME'} \= \"/opt/app/any/other/path\"|" a.txt

C:\Users\Ninz\Desktop>type a.txt
This is a fake file

 $ENV{'ORACLE_HOME'} = "/opt/app/any/other/path" ;

this is the last line
C:\Users\Ninz\Desktop>

# 9  
Old 05-22-2011
The 200 perl scripts are on a Unix/Linux server, so I can't use a '|' and I have to escape '/' in the path. But that is not the problem. I can escape '/' in the path and and escape the '$' and escape the '{' and it will match and replace the text. The problem is the single quote before and after ORACLE_HOME. Does anyone know how to match and replace a single quote in a line of text in a file?
# 10  
Old 05-23-2011
@JC9672 : Why cant you use different separator ?? Its valid and its not Platform specific.

I have copied below example on RH4 box and tried again, it worked without any modification ( If something works on windows then it should work on *nix without any problem Smilie )


1. Checking file contents, there are quotes before ORACLE_HOME

Code:
$ > cat a.pl
This is a fake file
$ENV{'ORACLE_HOME'} = "/home/oracle/product/10.1.0/db_1" ;
this is the last line
$ >

2. Running replace command

Code:
$ > perl -pi -e "s|\$ENV{'ORACLE_HOME'} \= \"/home/oracle/product/10.1.0/db_1\"| \$ENV{'ORACLE_HOME'} \= \"/opt/app/any/other/path\"|" a.pl

3. Checking the contents of file.

$ > cat a.pl
This is a fake file
$ENV{'ORACLE_HOME'} = "/opt/app/any/other/path" ;
this is the last line
$ >

4. Both the entries one below other
Code:
$ENV{'ORACLE_HOME'} = "/home/oracle/product/10.1.0/db_1" ;
$ENV{'ORACLE_HOME'} = "/opt/app/any/other/path" ;

# 11  
Old 05-23-2011
I copied and pasted your command and it did not work. I even copied your script and it did not work. I did not get any error message, but no replacement either. I am using a Red Hat box verison 8 or 9. I not sure which. Also my Perl version is 5.12.3. Maybe that is why it did not work.
# 12  
Old 05-23-2011
dont copy paste, sometimes it gets converted to other characters

try on simple thing , create 1 file with $ENV{"ABCD"} try to change this value do it on windows then on unix

paste what you have done, you have to try different things because its a regular expression and all versions of perl + red hat will support that ..

best of luck Smilie
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