How to write aliases with optional arguments in tcsh?
But tcsh will not complain about it – the * after !:1 is the beauty. On the other hand, if I have an alias alias test2 ‘echo \\!:1’, and if I run test – with zero arguments – tcsh will give an error. So extending that, I have the below alias defined to grab an argument of any index.
Which is an example of an alias in csh?
The csh and tcsh shells provide an alias command that allows you to make up new commands as abbreviations for longer, more complex commands. For example, defines a command named ll which lists files in long form ( i.e. with protections, sizes, modification dates, etc.)
What happens if there is no argument in tcsh?
If that argument doesn’t exist, the variable will be assigned a null value. But tcsh will not complain about it – the * after !:1 is the beauty. On the other hand, if I have an alias alias test2 ‘echo \\!:1’, and if I run test – with zero arguments – tcsh will give an error.
How to escape double quotes with tcsh alias?
If you can’t get an alias to work, just write a short shell script, chmod +x, and put it somewhere in your $PATH (like $HOME/bin): #!/bin/tcsh replace -x “must” I don’t have any experience with tcsh, but with bash you do it like any of these:
What happens if alias does not contain history substitutions?
If alias does not contain history substitutions, then original command line arguments will not change after the alias is expanded. If alias does contain history substitutions, then alias will become new command and history substitutions will be done as if the line you typed with the alias on it was the previous command.
Is there a way to print the whole array in tcsh?
I want to print the whole array in tcsh, because then i want to pipe it to uniq, is there a way to do it in tcsh. Is there some simple way to do it? You must have a very old version of tcsh, that Word too long limit was removed in tcsh version 6.14.03 in 2006.
Where do command line arguments go in alias?
alias commands themselves go in.cshrc. If you want command line arguments to appear inside an alias, you need to use history-like mechanisms to get them there. For example, if you wanted to set up an alias that would start up the editor for you appending.txt to the name of the filename you give on command line you could use