Bareword "file" not allowed while "strict subs" in use at line 2, in:file. | use rename command
Syntax Rename Command for Linux:
rename [OPTIONS] Perlexpressions files
The rename command will rename files according to the specific regular Perl expressions.
Example
for example to change all .bash files to a .txt files we will the following command:
$sudo rename 's/.bash/.txt/' *.bash
otherwise for normal rename process use the command mv:
mv file1.pdf file2.pdf
