Replacing in Found Files
Replace one string by another in all file found by find.
find . -name *whatyouwant* -exec perl -pi.bak -e 's/TEXT_TO_REPLACE/TEXT_TO_REPLACE_IT_WITH/g' {} \;
25
Jun
Category Archives: Perl
24
May
28
Mar
Install CPAN in Fedora
If you are getting a ‘Can’t locate CPAN.pm in @INC’ error while opening cpan, you have not installed Bundle::Cpan. You can do that without Cpan – using yum
yum install perl-CPAN
12
Feb
Remove Empty Lines and Comments
Remove comments and blank lines from example.pl
sed '/ *#/d; /^$/d' example.pl
05
Dec
Stop crond When mysqld is Down
A perl script to stop crond if mysqld is down
#!/usr/bin/perl
# See if MySQL server is alive or not
mysql_status = `/etc/init.d/mysqld status`;
print "MySQL Status:mysql_status\n";
unless(mysql_status =~ /running/) {
print "Stopping Cron... ";
#If MySQL is not running, kill the crondcron = `/etc/init.d/crond stop`;
print $cron;
}
print "\n";
10
Nov
Get URL Headers from Linux Command Line
Show the headers of an URL from the command line. This will need perl, lwp installed on the system.
lwp-request -ed "http://lindesk.com/"
01
Oct
Command to Print Until Regular Expression
Print a file until a regular expression is matched.
cat file.txt | perl -pe "exit if(/Thats all/)"
13
Sep
Remove empty directories
Remove all empty directories within the current directory
find . -type d -empty -exec rmdir {} \;
perl -MFile::Find -e"finddepth(sub{rmdir},'.')"
Delete Empty Directories
http://www.jonasjohn.de/lab/red.htm
[tags]empty,folder,delete,remove,perl,command,linux[/tags]
29
Jun
Replace \n with another String
The command to convert all \n in a file to another string – very useful for list code generation.
perl -ne 's/\\n/\',\'/g;print;' file.txt>new.txt
27
Jun
Remove Extension in Shell Scripting
This command will list all the files a folder without their extensions. Comes handy when doing shell scripting
perl -e 'while(<*.*>){s/\..{3}//i;print "File \"_\"\n";}print "\n";'