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Full Discussion: Sed or Awk usage to rename string
Top Forums UNIX for Dummies Questions & Answers Sed or Awk usage to rename string Post 302461556 by Scrutinizer on Monday 11th of October 2010 03:39:39 PM
Old 10-11-2010
Hi it is faster than awk or sed since no external programs need to be called from the shell to do the parsing..

for i in *_*_*.wavfor every file in the directory with this pattern
t=${i#*_}remove the part before the first _ and put the remainder in variable t
mv "$i" "${i%.*}-${t%%of*}.${i##*.}"mv file "$i" to the part of $i upto the extension (the last dot), followed by a "-" and variable $t with the part "of" and further cut off (which leaves the sequence number), then a dot (.) and then the extension of variable $i (everything before the last dot cut off)
I hope this helps. It can look a bit cryptic at first, but it really isn't that complicated..

Since $i will always contain files ending in .wav, this is equivalent in this case:
Code:
for i in *_*_*.wav
do
  t=${i#*_}
  mv "$i" "${i%.wav}-${t%%of*}.wav"
done

Last edited by Scrutinizer; 10-18-2010 at 11:04 AM..
 

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LEARN ABOUT DEBIAN

lltag_config

lltag_config(5) 						File Formats Manual						   lltag_config(5)

NAME

       config - Configuration file for lltag

DESCRIPTION

       The following options may be stored in /etc/lltag/config or the user's $HOME/.lltag/config, or in any file passed with --config.

       Such a configuration file may also be generated with --gencfg.

Obtaining tags
       format = "string"
	      Add  a user-defined format [-R].	Might be used multiple times.  Default is to guess if no user-defined formats and no default field
	      values are given.
       guess = <0/1>
	      Try to guess if user-defined formats do not match [-G].  Default is 0 (disabled) when no user-defined formats and no explicit values
	      are given.
       tag = <TAG=value>
	      Add an explicit tag [--tag].  Might be used multiple times.

Tweaking filename parsing
       no_path = <0/1>
	      Do not use file path when matching filename [-p].  Default is 0 (disabled).
       spaces = <0/1>
	      Allow no or multiple spaces [--spaces].  Default is 0 (disabled).

Cleaning obtained tags
       edit = <0/1>
	      Edit tags immediately [--edit].  Default is 0 (disabled).
       maj = <0/1>
	      Upcase first letters of words in tags [--maj].  Default is 0 (disabled).
       regexp = "s/from/to/"
	      Replace  from  with  to  in all tags.  title,number:s/from/to/ replaces in title and number tags only.  Might be used multiple times
	      [--regexp].  Default is to not apply any regexp.
       sep = "string"
	      Replace |-separated strings with space in tags.  Default is to not replace any separator.

Configuration of tag application
       type = <mp3|ogg|flac|none>
	      Force mp3, ogg of flac instead of by-extension detection [--mp3, --ogg and --flac].  Default is none.
       clear_tags = <0/1>
	      Clear all tags of audio files.  [--clear].  Default is 0 (disabled).
       append_tags = <0/1>
	      Append tags only instead of replacing old ones.  [--append].  Default is 0 (disabled).
       no_tagging = <0/1>
	      Do not actually tag files [--no-tagging].  Default is 0 (disabled).
       preserve_time = <0/1>
	      Preserve file modification time during tagging [--preserve-time].  Default is 0 (disabled).

Renaming
       rename_format = "string"
	      Rename file according to format [--rename].  Default is to not rename.
       rename_min = <0/1>
	      Lowcase tags before renaming [--rename-min].  Default is 0 (disabled).
       rename_regexp = "s/from/to/"
	      Replace from with to in all tags before renaming.  title,number:s/from/to/ replaces in title and number tags only.   Might  be  used
	      multiple times [--rename-regexp].  Default is to not apply any regexp.
       rename_sep = "string"
	      Replace spaces with a string in tags before renaming [--rename-sep].  Default is to not replace any separator.
       rename_slash = "string"
	      Replace slashes with a string in tags before renaming [--rename-slash].  Default is to replace with a dash.
       rename_ext = <0/1>
	      Assume the rename format provides an extension [--rename-ext].  Default is 0 (disabled).

Miscellaneous
       dry_run = <0/1>
	      Do nothing but show what would have been done [--dry-run].  Default is 0 (disabled).
       yes = <0/1>
	      Tag without asking for confirmation when guessing and rename without asking for confirmation [--yes].  Default is 0 (disabled).
       ask = <0/1>
	      Always ask for confirmation before tagging [--ask].  Default is 0 (disabled).
       recursive = <0/1>
	      Recursively traverse all given subdirectories [-R].  Default is 0 (disabled).
       verbose = <integer>
	      Message  verbosity  level [-v and -q].  Default is 0 (only important messages).  Other possible values are 1 (show usage information
	      when a menu is displayed for the first time) and 2 (always show usage information before a menu appears).

CDDB configuration
       cddb_server_name = hostname
	      Change the CDDB server name.  Default is www.freedb.org.
       cddb_server_port = <port>
	      Change the CDDB server port.  Default is 80 (HTTP).

SEE ALSO

       lltag(1)

       The config template file provided within the documentation directory.

AUTHOR

       Brice Goglin

								   NOVEMBER 2006						   lltag_config(5)
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