Answers: find - Script bash delete older files on directories with special chracters

Abdel Karim Mateos Sanchez

I use a script for delete older files on Trash or directories type Junk, or similar.

It works fine except when it has special characters or spaces in the names

/home/theos98/mail/theos98.es/dmalmierca/.Trash.Renfe Mart&AO0-n Fernandez
/home/theos98/mail/theos98.es/dmalmierca/.Trash.Renfe Cordoba
/home/theos98/mail/theos98.es/dmalmierca/.Trash.Renfe - Sevilla

In this scenario not work

I use two formats but not work

for p in $(cat /tmp/listado.txt); do  find "$p" -type f -mtime +50 -delete; done

or

for p in $(cat /tmp/listado.txt); do  find $p -type f -mtime +50 -delete; done

And two get this error

 /home/theos98/mail/theos98.es/dmalmierca/.Trash.Renfe Not found

I dont' know how can pass to script correct line.

slhck

The for statement "reads" input word by word. You need to read it line by line.

while read -r line; do find "$line" -type f ...; done < /tmp/listado.txt

The -r prevents backslashes in the lines from being interpreted.

bash - Apply a command to all files in a directory, one directory at a time

bash find

NickG

I want to apply replaygain information to all the MP3 files in my music collection. To do this, I'm using a tool called mp3gain (on Linux).

In order to apply the album gain correctly, I need to run the mp3gain command on a per directory basis. In other words, I need to find a directory, run mp3gain on all files in that directory, then repeat for every other directory. So far, I've come up with this:

 find . -type d -exec mp3gain {}/*.mp3 \;

The output looks like this (only showing a couple of the many directories):

[...] ./dev2/Physicist/*.mp3 Can't open ./dev2/Physicist/*.mp3 for reading ./Real Things/*.mp3 Can't open ./Real Things/*.mp3 for reading

It appears to me that the '*' is being escaped, so rather than looking for all files ending in '.mp3', it is looking for a file called '*.mp3'.

What command should I use?

Related Answers

John T

Looks like it's not globbing properly. How about something like this:

#!/bin/bash
OLDIFS=$IFS
IFS=$(echo -en "\n\b")
for dir in $(find . -type d)
do
        mp3gain $dir/*
done
IFS=$OLDIFS

as a single command:

OLDIFS=$IFS;IFS=$(echo -en "\n\b");for dir in $(find . -type d);do mp3gain $dir/*;done;IFS=$OLDIFS

user19647

It might not look nice, but this command will find all directories that contain mp3 files write them to a tempfile and then go through that tempfile listing the contents of each dir. If you're happy with the Output, you can go ahead and plug your mp3gain command into it in place of the ls.

Setting the IFS variable to a newline character is important so that you can work with files and directories that contain spaces.

The reason I've chosen to list directories containing mp3s first is in case mp3gain throws an error when encountering empty sets of files. In this way it never encounters such a situation.

IFS=$'\n'; for i in `find -type f -iname *.mp3`; do dirname $i ; done | sort | uniq > ~/mp3directories.txt && for i in `cat ~/mp3directories.txt`; do ls -1 $i/*.mp3 ; echo ; done

Rebol Tutorial

You can use Rebol it works on Unix and Windows

How to apply a function to all files in a directory recursively

http://reboltutorial.com/blog/how-to-apply-a-function-to-all-files-in-a-directory-recursively/

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find - Script bash delete older files on directories with special chracters