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I need a Bash script that changes the file permissions of all files in a directory and all subdirectories. It should behave like this:
for each file in directory (and subdirectories)
if i am the owner of the file
if it is a directory
chmod 770 file
else
chmod 660 file
I guess it's not a difficult task but I am not very experienced in Bash scripts. Your help is appreciated! :D
258
If you need to change a file permission, use the chmod command. It also allows to change the file permission recursively to configure multiple files and sub-directories using a single command.
Chmod allows you to change the permission of multiple files and subdirectories within a directory using the –R option as follows: $ chmod –R [reference][operator][mode] file... Let's say the subdirectories under the downloads directory have the following permissions as shown in the following screenshot.
Fortunately, you can recursively change the file permissions of a directory or file and its sub-directories and files. To do that, use the chmod command recursive -r option.
Setting 777 permissions to a file or directory means that it will be readable, writable and executable by all users and may pose a huge security risk.
You could do it with two invocations of the find command, with the -user option to filter by user, and the -type option to filter by filetype:
find . -user "$USER" -type d -exec echo chmod 770 {} +
find . -user "$USER" -not -type d -exec echo chmod 660 {} +
Remove echo after testing, to actually change the permissions.
184
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