Batch rename extension of all files in a folder, in the example from .txt to .md mmv most likely must be installed, but is very powerfull when you want to move/copy/append/link multiple files by wildcard patterns.

Same thing using bash built-in features instead of a sub-shell.

Batch rename extension of all files in a folder, in the example from .txt to .md

I wrote a script to make it a bit easier and more flexable: #!/bin/bash #By GrouchyGaijin # Hard part (lines 15 and 21) by Vaphell #Last Updated: 04-Oct-2013 (Friday - yes see what I do on Firday nights) @ 23:37 #Put this in path and call it by typing batchrename in the terminal #Version 0.3 echo "This script is for batch renaming files." read -p "Enter the path to the folder containing the files. " path cd $path read -p "Enter the file extension. " extension echo "Press N if you want to use a new name or D if you want to use the date" read x if [ "$x" = "D" ] then i=1; for f in *; do mv -- "$f" "$( printf "$( date +%d-%b-%Y )-%04d.$extension" $i )"; ((i++)); done fi if [ "$x" = "N" ] then read -p "Enter the new base name: " new_name i=1; for f in *; do mv -- "$f" "$( printf "$new_name-%04d.$extension" $i )"; ((i++)); done fi #OK S11 - change this to Thunar nautilus $path

# Limited and very hacky wildcard rename # works for rename *.ext *.other # and for rename file.* other.* # but fails for rename file*ext other*other and many more # Might be good to merge this technique with mmv command... mv-helper() { argv="`history 1 | perl -pe 's/^ *[0-9]+ +[^ ]+ //'`" files="`echo \"$argv\"|sed -e \"s/ .*//\"`" str="`history 1 | perl -pe 's/^ *[0-9]+ +[^ ]+ //' | tr -d \*`" set -- $str for file in $files do echo mv $file `echo $file|sed -e "s/$1/$2/"` mv $file `echo $file|sed -e "s/$1/$2/"` done } alias rename='mv-helper #'