DEV Community 👩‍💻👨‍💻

abbazs
abbazs

Posted on • Updated on

Shell script recipes

How to execute a command in all the sub directories in linux?

Consider there is a need to execute a command in all the sub directories of a directory, how to do it using bash script?

# In this example `du -ksh` is executed to get the size of each sub directory 
##Get disk usage of all sub directories#########################
function duall(){
    for d in */; do
        if [ -d "$d" ]; then
            echo "$d"
            cd "$d"
            du -ksh # Replace this line with any command required
            cd ..
        fi
    done
}
Enter fullscreen mode Exit fullscreen mode

Add the function to the .bashrc file in the home directory and below the function add an alias for the function:

alias duall="duall" # Disk usage of all sub directories
Enter fullscreen mode Exit fullscreen mode

Now the function duall available as a command.


How to remove all the files of a given type recursively?

find . -name "*.bak" -type f -delete
Enter fullscreen mode Exit fullscreen mode

Warning: If the -delete is issued before -name option, find will delete all the file.


How to tar all the folders and file except few?

tar --exclude='./folder' --exclude='./upload/folder2' -zcvf /backup/filename.tgz .
Enter fullscreen mode Exit fullscreen mode

Reference


How to retain the folder structure while archiving using 7z?

It helps to create a archive file with full path later to exactly recreate the same folder structure while extracting the zip file.

7z a -spf some.zip ./folder/subfolder/*
Enter fullscreen mode Exit fullscreen mode

While extracting the some.zip file all the folder structure will be retained.

7z x some.zip
Enter fullscreen mode Exit fullscreen mode

Top comments (0)

🌚 Browsing with dark mode makes you a better developer by a factor of exactly 40.

It's a scientific fact.