This subchapter looks at alias, a UNIX (and Linux) command.
alias is used to create short names for long strings of commonly performed commands, scripts, and functions, and their combinations.
alias is a builtin command in bash and csh. There is also an external utility with the same name and functionality.
You can use the alias command to modify the rm so that it always displays an interactive query before deleting a file.
$ alias rm="rm -i"
Unfortunately, this alias can cause some scripts to fail (possibly including system scripts that were provided with your distribution). Any scripts that rely on the unmodified version of an aliased rm are likely to fail or produce strange results because of your alias.
A better alternative is to use an alias to a different, non-conflicting name. In this case, del might be appropriate.
$ alias del="rm -i"
If you have set an alias on a command or utility, you can always run the raw unmodified command or utility by typing the absolute directory path to the command. For example, if you set an alias to have ls always show hidden files, you can still run the regular ls by typing its full path name.
$ alias ls="ls -a" #modify the ls command $ /bin/ls #run the raw ls command
Some system administrators always type out the complete path name for a command when using the root or superuser account to help prevent mistakes.
In June 2009, Ken Milberg named this command as one of the Top 50 universal UNIX commands at this web page Top 50 Universal INIX commands. Note that this web page requires agreeing to be spammed before you can read it.
free music player coding example
Coding example: I am making heavily documented and explained open source code for a method to play music for free almost any song, no subscription fees, no download costs, no advertisements, all completely legal. This is done by building a front-end to YouTube (which checks the copyright permissions for you).
Work on this project is very slow because I am homeless. I am available for work if someone can provide an indoor place to work in Costa Mesa, California, electricity, internet connections, a flat raised working surface (such as a table or desk), a sitting device (such as a chair or stool), and a fully functional reasonably modern used computer. Im already homeless, so you dont need to pay me (and I understand how much business people hate the minimum wage law). Just give me a chance to work.
Building a free downloadable text book on computer programming for university, college, community college, and high school classes in computer programming.
If you like the idea of this project, then please donate some money.
send donations to: Milo
PO Box 1361
Tustin, California 92781
At the time I am homeless. This greatly interferes with my ability to create this project, which can help nearly 20 million U.S. college students and more than 150 million students world-wide. I am looking for 30 rich people or corporations willing to donate $10 a month to my church so that the church can provide a place indoors for me to continue work. If you want to donate, please see help project. Thanks much.
Supporting the entire project:
If you have a business or organization that can support the entire cost of this project, please contact Pr Ntr Kmt (my church)
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