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Perl Tips


This is my Perl Tips and Explanation page to explain how some of the common things work.
 

Backup Linux files over SSH

By Vinod at 2011-05-30 16:32:39
Backup entire system but exclude proc, lost_found, dev, mnt, media, sys, tmp etc folders. Send the back up to another system using SSH.

tar -cvpzf - --exclude="/proc/*" --exclude="/lost+found/*" --exclude="/dev/*" --exclude="/mnt/" --exclude="/media/*" --exclude="/sys/*" --exclude="/tmp/*" --exclude="/var/cache/apt/*" /* | ssh USER@HOST "cat > FILENAME.tar.gz"
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kill process with grep and awk

By Vinod at 2008-07-02 08:35:48
Some times you want to kill process that have certain keywords in the command line.

Here is how to kill them with grep and awk.
ps -efw | grep "keyword" | awk '{print kill $2}'

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How <<EOF..... EOF works in perl

By Vinod at 2005-06-22 13:10:06
Combination of <<EOF ..... EOF is used in perl to tell the interpreter to consider the text between <
for example $foo = "this is a string";

is equvelent of
$foo = <<EOF
this is a string
EOF
;

Things to be noted it starts with <<EOF and a new line after that you can put all your text and it closes with a newline EOF newline and semico
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