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Full Discussion: renaming files in the directory
Top Forums UNIX for Dummies Questions & Answers renaming files in the directory Post 302314738 by c_d on Saturday 9th of May 2009 09:58:25 PM
Old 05-09-2009
renaming files in the directory
suppose i have a few file like "a b c.txt" , "hello world.c" etc...(files that have space between them in their filenames).

how do i change their filenames to "a_b_c.txt" and "hello_world.c" respectively?

heres what i have tried...but failed
Code:
[c_d@localhost dummy]$ find -name "*" -exec mv "{}" "`echo {} | tr " " "_"`" \; #the command that i m trying
mv: `.' and `./.' are the same file
mv: `./d e f' and `./d e f' are the same file
mv: `./dummy.sh' and `./dummy.sh' are the same file
mv: `./hell owr w' and `./hell owr w' are the same file
mv: `./j' and `./j' are the same file
mv: `./k' and `./k' are the same file
mv: `./file1' and `./file1' are the same file
mv: `./2' and `./2' are the same file
mv: `./a b c' and `./a b c' are the same file
[c_d@localhost dummy]$

this is how i broke it down

find command finds a file. it then executes mv. the mv processes the code `echo <filename> | tr " " "_" ` so output of "a b c" would be transilated to "a_b_c" and this output becomes the "DEST" in "mv SOURCE DEST" command ...where SOURCE is the <filename>

why shouldnt this work?
Last edited by c_d; 05-10-2009 at 01:06 AM..
 

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LEARN ABOUT PLAN9

mv

MV(1)								   User Commands							     MV(1)

NAME

       mv - move (rename) files

SYNOPSIS

       mv [OPTION]... [-T] SOURCE DEST
       mv [OPTION]... SOURCE... DIRECTORY
       mv [OPTION]... -t DIRECTORY SOURCE...

DESCRIPTION

       Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.

       Mandatory arguments to long options are mandatory for short options too.

       --backup[=CONTROL]
	      make a backup of each existing destination file

       -b     like --backup but does not accept an argument

       -f, --force
	      do not prompt before overwriting

       -i, --interactive
	      prompt before overwrite

       -n, --no-clobber
	      do not overwrite an existing file

       If you specify more than one of -i, -f, -n, only the final one takes effect.

       --strip-trailing-slashes
	      remove any trailing slashes from each SOURCE argument

       -S, --suffix=SUFFIX
	      override the usual backup suffix

       -t, --target-directory=DIRECTORY
	      move all SOURCE arguments into DIRECTORY

       -T, --no-target-directory
	      treat DEST as a normal file

       -u, --update
	      move only when the SOURCE file is newer than the destination file or when the destination file is missing

       -v, --verbose
	      explain what is being done

       -Z, --context
	      set SELinux security context of destination file to default type

       --help display this help and exit

       --version
	      output version information and exit

       The  backup  suffix  is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.  The version control method may be selected via the --backup
       option or through the VERSION_CONTROL environment variable.  Here are the values:

       none, off
	      never make backups (even if --backup is given)

       numbered, t
	      make numbered backups

       existing, nil
	      numbered if numbered backups exist, simple otherwise

       simple, never
	      always make simple backups

AUTHOR

       Written by Mike Parker, David MacKenzie, and Jim Meyering.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report mv translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       rename(2)

       Full documentation at: <http://www.gnu.org/software/coreutils/mv>
       or available locally via: info '(coreutils) mv invocation'

GNU coreutils 8.28						   January 2018 							     MV(1)
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