What does the shell function alias do?
An alias is a (usually short) name that the shell translates into another (usually longer) name or command. Aliases allow you to define new commands by substituting a string for the first token of a simple command.
Why would someone create an alias?
An alias is a false name, a name not legally recognised. Someone wishing to hide their true identity/background might adopt an alias. It is usually associated with criminal activity but anyone wishing for temporary anonymity could use an alias.
How to create aliases and shell functions on Linux?
1 The alias command is used to define an alias. 2 The name of the alias is given next. In this example it is grep. 3 The equals sign connects the name of the alias to the body of the alias. 4 The body of the alias is the section which is executed when the alias is used on the command line.
When to use alias in a compound command?
To be safe, always put alias definitions on a separate line, and do not use alias in compound commands. The two sentences “Aliases are expanded when a function definition is read, not when the function is executed” and “aliases defined in a function are not available until after that function is executed” seem to be contrary to each other.
Why does alias not take effect when a function is executed?
Therefore, an alias definition appearing on the same line as another command does not take effect until the next line of input is read. The commands following the alias definition on that line are not affected by the new alias. This behavior is also an issue when functions are executed.
Which is an example of an alias in Java?
For example: @baseclass, Work-, Data-,etc… This section allows us to select the Java function rule for which the alias is being created. This section displays the list of input parameters from the selected function for which the description, Property reference, default value, etc.. can be updated.