Articles tagged with: UNIX


Jan 15, 20109

Tips to Make Ubuntu Boot Faster

Categories: Operating System
Tips to Make Ubuntu Boot Faster
Ubuntu is pushing the Linux desktop movement forward. Since it's inception in 2004, Ubuntu has released over 10 versions so far, each one improving on its predecessor. It remains one of those few operating systems, that boots really fast. Still, if you are one of those brave hackers who likes to tune your machine to maximize efficiency, here are a few tricks on how to make Ubuntu boot faster.Word of caution: These tune ups have been tested on Ubuntu 8.04 Hardy Haron. I haven't upgraded it as it has been pretty solid and stable release. So if you're on a newer(or older) version, I suggest you do some research before applying these tricks. And of course, always keep back ups. Have Fun!Reducing the boot menu delay If you dual-boot Ubuntu and Windows on your computer the boot menu appears for 10 seconds, during which you can select either Windows or Ubuntu. If you only have Ubuntu installed, a prompt appears for three seconds telling you that you can hit a key to see the boot menu. You obviously don't need to wait for the 3 seconds since you have no other OS to boot from. You can eliminate this delay by ...
Jan 26, 20097

Equivalent of UNIX Grep command in Dos/Windows

Categories: Operating System
Equivalent of UNIX Grep command in Dos/Windows
You can use the 'type' and 'find' command in Dos/Windows to get the equivalent output of the UNIX 'cat' and 'grep' commands. The 'find' command can be very useful when you are trying to search for a specific text or phrase over multiple files. The 'find' command also comes in handy when searching for all the occurrences of a specific text or phrase in all the files under all the sub-directories of a given directory. The Type Command The 'type' command in Dos simply displays the contents of a text file or files. To see the content of a file simply enter the following in the command prompt: C:>type "filename" The Find Command The 'find' command in Dos can be used to search for a text string in a file or files. below is the usage and optional parameters of the 'find' command.FIND [/V] [/C] [/N] [/I] [/OFF[LINE]] "string" [[drive:][path]filename[ ...]]/V         Displays all lines NOT containing the specified string. /C         Displays only the count of lines containing the string. /N         Displays line numbers with the displayed lines. /I         Ignores the case of characters when searching for the string. /OFF[LINE] Do not skip files with offline attribute set. "string"   Specifies the text string to find. [drive:][path]filename Specifies a file or files to search.If ...
Dec 2, 20087

UNIX vi commands – take advantage of the UNIX vi editor

Categories: Operating System
UNIX vi commands – take advantage of the UNIX vi editor
The UNIX vi commands listed on this page which handles navigation, cursor movement, searching, editing, inserting text, using auto-complete, cut copy and paste operations etc in vi are useful for taking advantage of the UNIX vi editor.vi (Visual Editor) is the default editor that comes with the UNIX operating system.The UNIX vi editor has two modes of operation: 1.Command mode (commands which cause action to be taken on the file - Press the 'i' character to change to Insert mode). 2.Insert mode (entered text is inserted into the file - Press the <Esc> (Escape) key to go to the command mode).When using vi, keep in mind that vi is case sensitive. Over time I have learned that the 'Escape' key is king in vi editor. Start and exit commands To open a file in the vi editor to start editing, simply type in 'vi <filename>' in the command prompt. e.g. prompt>vi tmp.txtTo quit vi, type one of the following commands in the command mode and press 'Enter'. Exit vi, writing out modified file - : x Exit vi, writing out modified file - :wq Simply quit vi - :q Force exit from vi even though changes haven't been saved - :q! Cursor Navigation in vi editor By character – h, j, ...
Dec 1, 20087

Basic UNIX Commands List

Categories: Operating System
Basic UNIX Commands List
This list of useful and frequently used UNIX commands is a good reference for someone who is new to UNIX/LINUX Operating System. The most commonly used and basic Unix commands and what they do are listed below. Use the “man” command to find the usage and details of any particular command e.g. prompt>man cp. Using "man cp" on the command prompt will display the details and usage of the copy (cp) command. File/Directory operation related Unix Commandscp - copy a file mv - move or rename files or directories tar - create and use archives of files gzip - compress a file ftp - file transfer program lpr - print out a file mkdir - make a directory rm - remove files or directories rmdir - remove a directory mount - attaches a file system to the file system hierarchy at the mount_point, which is the pathname of a directory. umount - unmounts a currently mounted file system.Navigational type Unix Commandscd - change directory pwd - display the name of your current directory ls - list names of files in a directoryDisplay file contentcat - concatenate and display files. more - The more utility is a filter that displays the contents of a text file on the terminal, one screenful at a time. less - ...

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