Linux Server and Workstation Configuration How To

1. Internet gateway on FreeBSD

... of course free of charge all the used software. In this article were used FreeBSD 7.0 RELEASE amd64, IPFW as firewall, daemon natd and squid as proxy server. Let's start with the installation of IPFW. ...

2. vi editor commands

... space) b Moves the cursor to the first character of the previous word B It is used like a command b, except that the words are separated by only space and a new line Sentence positioning ( ...

3. Instead Gnome Shell in Ubuntu 10.10 will be used classic GNOME interface

Mark Shuttleworth said that in the main release of Ubuntu 10.10 will not be used the new desktop GNOME Shell from the GNOME 3.0, but it can be installed from the standard repository. ...

4. aTunes 2.0 - a universal media player

... radio Used engine: mplayer for all platforms, or xine for Linux Support for tags EQ, Karaoke Support for skins, minimize to tray Support for podcasts, search for information using YouTube, ...

5. more

... of two rows in front of the pattern. -s displays instead of several blank lines one blank line. Description The command more performs  display these files. To view commands that can be used more, ...

6. info

... -f file_info specifies the file used by the team info. -h displays the information on the application info. Description Info command displays online help for this team in full text box. For more information ...

7. grep

... only whole words. Description The command grep searches for a template in these files. Typically, the grep command used to search a specified sequence of characters in one or more text files.  ...

8. free

Command free free command displays the number of free and used memory in the system. Syntax free [options] Options -b displays the amount of memory in bytes. -k displays the memory size in kilobytes ...

9. du

... directories. By default, du displays the amount of disk space used each directory and subdirectories. Usually a team du applied to the total output volume of disk space occupied by the current directory. ...

10. dos2unix

... mode: ASCII (default), 7bit, ISO, Mac. Description Dos2unix command is used to convert the formats of text files DOS/Mac to UNIX format. It is known that the formats of text files in different operating ...

11. df

... with no arguments. In this case, the df command displays information about used and available memory of all currently mounted filesystems systems.  ...

12. cmp

... -s only returns the exit code (0 - identical files, 1 - various files, 2 -- inaccessible or missing argument). Description Command cmp compares file1 and file2. If file1 is replaced by '-' is used standard ...

13. How To Securing SSH Connection

... port - Edit /etc/ssh/sshd_config config file by your favorite text editor and change the line which reads "Port 22" to any other unused port. #Port 22 Port 2223 Disable Protocol 1 which is insecure ...

14. Get RAM Information

Get RAM Information # free -m # free -mto | grep Mem: | awk '' # rusedram="$($_CMD free -mto | grep Mem: | awk '')" # rfreeram="$($_CMD free -mto | grep Mem: | awk '')" # rtotalram="$($_CMD ...

15. File Server With Samba and FTP in FreeBSD

... testa can read and write in admin (FTP only) and public directories. User testu can read and write in the public directory and can read admin directory. In this example were used: FreeBSD 7.2 ...

16. Linux, UNIX User Management Commands

...  Ex: adduser mark - Effect: Adds a user to the system named mark     chage Used to change the time the user's password will expire.     chfn Change ...

17. alias

... alias, you will get a list of all defined at the moment abbreviations. Typically, the alias command is used to determine easily memorized abbreviations for longer commands. For example, if you often type ...

18. cat

... (including invisible). Description Usually, the cat command is used to display the contents of a file or to concatenate multiple files into one. For example, cat filel file2 file3> all three files ...

19. Default Port Numbers

... krb5 # Kerberos v5 supdup 95/tcp # 100 - reserved hostnames 101/tcp hostname # usually from sri-nic iso-tsap 102/tcp tsap # part of ISODE. csnet-ns 105/tcp cso-ns # also used by CSO name server ...

20. Linux, UNIX Directories

Mount Point Explanation / Root directory /bin Main program /boot Used at boot /dev directory Where the registered user devices (modem, mouse, keyboard, etc.) /etc ...