I have a directory tree like this

|-- players
|   |-- red_alice.plr
|   |-- red_bob.plr
|-- resources
|   |-- red_cash.rsc
|   |-- red_food.rsc

I want to go through all directories and rename any file that starts with "red" to instead start with "blue"...

I think it is work of find and sed commands but I am not sure how to formulate this situation...I know for example I can find files by

find . -name "red*" -type f

then how to use this output to rename red to blue?

  • Try find path_to_dir/ -type f -name 'red_*' -exec sh -c 'for f; do echo mv -- "$f" "${f/red/blue}"; done' _ {} + When satisfied, remove the echo part Jan 10 '19 at 13:21

You can do it with rename command:

find . -type f -name "red*" -exec rename  s/red/blue/g "{}" +;

So it will find the files with name starting with red and then will put all of them in single command like

 rename s/red/blue/g red_first red_second

It will search for files in all directories below the current directory.

  • Cool. Didn't know rename. Also has a option -n to print what would be done instead of doing it.
    – Ralf
    Jan 10 '19 at 13:34
  • Yeah, just verbose kind.
    – Prvt_Yadav
    Jan 10 '19 at 13:35
  • This did not change anything and also did not produce any error message..hmmm
    – DEKKER
    Jan 15 '19 at 9:31
  • It should work I tried it.
    – Prvt_Yadav
    Jan 15 '19 at 9:37
  • @P_Yadav I think the Linux machine I am working on is quite old and this way is not supported
    – DEKKER
    Jan 21 '19 at 13:36

Maybe like this:

find . -name "red_*" -exec bash -c 'echo mv "{}" "$(echo "{}" | sed "s%/red_%/blue_%" )"' \;

This just prints the commands. Good to check if it would actually work. If you verified that, remove the echo before mv.

  • hmm I get this error 'find missing argument to -exec''
    – DEKKER
    Jan 10 '19 at 12:16
  • Did you also add the \; at the end?
    – Ralf
    Jan 10 '19 at 13:25

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