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
Tag 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
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 $cron;
}
print "\n";
04
Nov
git status Without the Untracked Files
Don’t show the untracked files in git status
git status | perl -pe "exit if(/Untracked files\:/)"
18
Oct
Sensex Figure using a Linux Command
This one command will fetch and display the latest sensex figure in Linux. This command basically downloads a page, locates a specific line, and then extract just the necessary portion from it. I am sure you could find other uses for this method.
curl -s "http://money.rediff.com/money/jsp/markets_home.jsp" |grep ''|head -n1|perl -pe 's/^.+\">([\d\,\.]+)<\/TD>.+$/\1/i;'
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";'