Renaming files by appending string from within file to filename
Greetings. I am working in a Linux environment and am trying to figure out a way to rename files in a directory by appending a unique strings that appears within a certain area in those files. I have gotten as far as identifying what that particular unique string is with a command like the following:
The part that I am trying to figure out is how to rename the various files in the directory by appending the value that the aforementioned command returns. For example, if filename "filename001," "filename002," and "filename009" contains strings "ABC," "DEF," and "XYZ" in the particular field respectively, the new filenames should read "filename001_ABC," "filename002_DEF," and "filename009_XYZ."
Thanks in advance for the assistance and please feel free to suggest elegant alternatives of the aforementioned command if you'd like.
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Discussion started by: saravanapandi
2 Replies
LEARN ABOUT LINUX
prename
RENAME(1) Perl Programmers Reference Guide RENAME(1)NAME
rename - renames multiple files
SYNOPSIS
rename [ -v ] [ -n ] [ -f ] perlexpr [ files ]
DESCRIPTION
"rename" renames the filenames supplied according to the rule specified as the first argument. The perlexpr argument is a Perl expression
which is expected to modify the $_ string in Perl for at least some of the filenames specified. If a given filename is not modified by the
expression, it will not be renamed. If no filenames are given on the command line, filenames will be read via standard input.
For example, to rename all files matching "*.bak" to strip the extension, you might say
rename 's/.bak$//' *.bak
To translate uppercase names to lower, you'd use
rename 'y/A-Z/a-z/' *
OPTIONS -v, --verbose
Verbose: print names of files successfully renamed.
-n, --no-act
No Action: show what files would have been renamed.
-f, --force
Force: overwrite existing files.
ENVIRONMENT
No environment variables are used.
AUTHOR
Larry Wall
SEE ALSO mv(1), perl(1)DIAGNOSTICS
If you give an invalid Perl expression you'll get a syntax error.
BUGS
The original "rename" did not check for the existence of target filenames, so had to be used with care. I hope I've fixed that (Robin
Barker).
perl v5.12.4 2011-08-10 RENAME(1)