When you use the standard rm command in Linux, it will delete the specified files, with no

chance for recovering them back later. Write a script (called srm) that will safely delete the file(s)

passed to it as command-line argument(s). For example, typing: srm file1 file2 file3

etc., the script shall not actually delete these files, but instead it shall move them to a

/home/user-name/trash directory. Also, the script shall do the following:

1. When it starts, it shall check for the existence of directory /home/user-name/trash, if it does

not exist, the script must create it.

2. The script shall then check the trash directory for files older than one week and delete them.

3. If the script is called with a r switch and a list of files (e.g. srm r file1 file2 file3

etc.), or a wildcard file pattern (e.g.: srm r file*) then it shall not delete the files, but

rather it shall recover the matching files in the trash, by moving them back to the same

directories they were deleted from.

4. If the script is called with a h switch (e.g. srm h file1 file2 file3 etc. or srm r

file*), then it shall do the same as the r switch, but all matching files shall be recovered to

the current directory.

i want to know how to execute the -r conmand