LINUX ADMINISTRATION NOTES & CODE SNIPPETS

This script automatically opens a FTP session and downloads file to local disk. Here is the scenario:
ftp: myftp.ext
username: myusername
password: mypassword
file to download: myfile.txt
1) Create bash script automatic_ftp_download.sh:
#!/bin/bash
# Script to create automatic FTP session and download file
ftp -n myftp.ext << end
us myusername mypassword
get myfile.txt
bye
end
2) make automatic_ftp_download.sh script executable:
chmod +x automatic_ftp_download.sh
3) run automatic_ftp_download.sh scrip:
./automatic_ftp_download.sh
4) find myfile.txt [...]

Filed under: Administration, Bash, Linux, Networks | No Comments »

1)
First identify the chapter which you would like to rip to avi mpeg4 format. Usually it is the biggest file on the dvd with extension *.vob . Other option is to use:
mplayer -identify -nosound -novideo dvd://
2)
Get and covert sound to mp3:
mencoder -oac mp3lame -lameopts br=96:cbr:vol=6 -ovc frameno -o dvdrip.avi dvd://1
3)
Get video:
run this command for [...]

Filed under: Commands, Linux | No Comments »

Match or validate an email address with perl regex ( regular expression )
This perl script shows how to validate an email address using perl and regular expression ( regex ).
#!/usr/bin/perl
@email = (”email\@address”,”email\@address.email”,
“\@address.email”,”address.email\@email”, “validate\@email.address”);
foreach (@email) {
if (/^[A-z0-9_\-]+[@][A-z0-9_\-]+([.][A-z0-9_\-]+)+[A-z]{2,4}$/) {
print “$_\n”;
}
}
Result:
email@address.email
validate@email.address

Filed under: Linux, Perl, Programming | No Comments »