I have a script, this script creates a dump in /path/of/directory and deletes it instantly. I want to copy that dump before it gets deleted.
I tried;
dump=$(ls -a | grep -E "^[0-9]+$")
cp $dump fulldump
But I only got a half of the script, not the full one.
You can use chattr to prevent file deletion (while allowing file creation and modification), and other handy permissions
For directory:
sudo chattr -R +a /TEMP/
or if just the (existing) file:
sudo chattr +a /TEMP/youCantDeleteMe.txt
To revert permissions use -a in place of +a
$ mkdir Documents/TEMP && cd $_
$ echo can edit > youCantDeleteMe.txt
$ sudo chattr -R +a ../TEMP/
$ echo after plusA on file>> youCantDeleteMe.txt
$ cat youCantDeleteMe.txt
can edit
after plusA on file
$ sudo rm youCantDeleteMe.txt
rm: cannot remove 'youCantDeleteMe.txt': Operation not permitted
$ ls -lA
-rw-rw-r-- 1 v v 25 Sep 5 05:59 youCantDeleteMe.txt
$ echo . > youCantDeleteMe.txt
bash: youCantDeleteMe.txt: Operation not permitted
$ touch somebody
$ ls -lA
-rw-rw-r-- 1 v v 0 Sep 5 06:04 somebody
-rw-rw-r-- 1 v v 25 Sep 5 05:59 youCantDeleteMe.txt
$ sudo rm somebody
rm: cannot remove 'somebody': Operation not permitted
$ sudo chattr +a ./undel.txt
chattr: No such file or directory while trying to stat ./undel.txt
And to later remove the file
$ sudo chattr -R -a ../TEMP/
$ ls -lA
drwxrwxr-x 2 v v 4096 Sep 5 06:17 .
drwxr-xr-x 7 v v 4096 Sep 5 05:57 ..
-rw-rw-r-- 1 v v 0 Sep 5 06:04 somebody
-rw-rw-r-- 1 v v 25 Sep 5 05:59 youCantDeleteMe.txt
$ rm -rf ./*
$ ls -la
drwxrwxr-x 2 v v 4096 Sep 5 06:17 .
drwxr-xr-x 7 v v 4096 Sep 5 05:57 ..
