If you need to configure more network aliases, you can use the following commands: vi /etc/network/interfaces Add the following lines: auto eth0:0iface eth0:0 inet staticname Ethernet alias LAN cardaddress 192.168.1.101netmask 255.255.255.0broadcast 192.168.1.255network 192.168.1.0 Restart the network service: /etc/init.d/networking restart Now your machine will response also to 192.168.0.101. You can use up to 254 aliases for… Read More »
When you want to run a command and save the output to a file an easy way to do this is by nohup ./myscript.sh & Cheers,
#! /usr/bin/perl use CGI qw/:standard/; print “Content-type: text/htmlnn”; print “Modify the file:$file<br/><br/>”; $action = param(‘action’); if($action eq “”){ $file_content=””; open (MYFILE, “<“, $file); @lines=<MYFILE>; foreach $l(@lines){ $file_content.=$l; } close (MYFILE); print<<frm; <form action=”modify.cgi” method=”POST”> <textarea name=”file” cols=”150″ rows=”30″> $file_content </textarea> <input type=”hidden” id=”action” name=”action” value=”modify”> <br /><br /> <input type=”submit” value=”Modify!”> </form> frm } if($action… Read More »
When you want to create a symbolic link to a certain location all you have to do is ln -s /usr/local/apache/logs ./logs This will create a symbolic link inside current directory: logs which goes to /urs/local/apache/logs Cheers,
When you want to close a console, but you want to leave the program which runs active you must run the following commands: Ctrl + Z – this will put the process in background, but in inactive state bg – will activate the process in background If you want to bring it to front fg… Read More »
To show the kernel version all you have to do is to run the following command from console uname -r Cheers,
When you need to view all open ports from you Linux machine all you have to do is to run the following command in the console: netstat -tulpn Cheers,
When you need to see how many files a program opened, you must run the following command: lsof | grep my_program | wc -l Cheers,
When you need to search recursively inside a structure of directories you need to run the following command from the console: find /srv -type f -follow -exec grep –with-filename –line-number “apache2ctl” {} ; This will search in every file from every folder from /srv and will show in which file and at each line it… Read More »
If you want to set what programs will start when you boot your Linux machine you must set the Run Levels. A visual way to do this, from OpenSuse 11.0 is: Yast -> System -> System Services (Run Level) -> Expert Mode After this you must enable those services. Cheers,