Deleting, Renaming and Changing the Permissions of Files
Deleting, Renaming and Changing the Permissions of
Files
- Perl also
provides you with all of the file management
functions typically offered by your operating system. In
my experience, the three most utilized functions in
CGI
scripts are unlink, rename and chmod. unlink is Perl's
function for deleting a file from the file system. The syntax
is pretty straight forward.
unlink ("[filename]");
- This line of Perl code will delete the file called filename
provided that the script has permissions to delete the
file.
- Your Perl script can also rename a file using the rename
function:
rename ("[old_filename]", "[new_filename]");
- In this case, the file's name will be replaced with the new
filename specified.
- Finally, Perl gives you the ability to affect the permissions
of files in the file system using the chmod function. The
syntax is also fairly straight forward as follows:
chmod (0666, "filename");
- In this case, "filename" will be made readable and
writable by user, group and world.
Additional Resources:
Writing and Appending to Files
Table of Contents
File Tests
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