Can anyone help me with my issue in ubuntu 12.04, i'm new to linux and just trying to play around with it.
I made a rm.sh basically it will move files to a trash directory instead of delete it.
and i also know will not able to execute rm.sh after reboot.
therefore i made another shell script(modify.sh) and saved under /etc/rc2.d, was hoping every time it reboots and will automatically alias rm.sh. But after i rebooted and it still not working, then i deleted modify.sh from /etc/rc2.d
and here is the new issue, now whenever i tried to do it displays
and alias is no longer working anymore. what is the problem and how to resolve it?
code for modify.sh is:

any help would be appreciated.
Thanks

Try the last line but add the trailing single quote.

There is libtrash to do what you doing, but at the system call level.

Also consider defining a function instead of a script.

Thanks jschiwal, by defining a function is that means in my modify.sh should be a function call right?

Aliases are for use in an interactive shell after login so are set in the shell initialisation files. For bash that's normally /etc/profile (global), ~/.bash_profile and ~/.bashrc. Full information on the bash startup files here.

Setting aliases in the boot scripts (/etc/rc2.d and similar) is not effective.

When you define an alias the the quotes must be terminated (the OP shows an alias string with an opening ' but no closing ').

Thanks catkin.
i'll need to look into bash startup files

You can define a function in .profile. A function works better than an alias for commands that take arguments, or when you need to perform a test on the arguments. In your example, if you use an alias for the rm command, you need to use 'rm -t ~/.trash/'. If it weren't for the -t argument, you wouldn't be able to alias the command, as the source file arguments come at the end of the file.

Using libtrash instead, files deleted in the desktop, or by a program would also be trashed instead of deleted.