Linux CLI 36 🐧 xargs and touch commands

a - xargs command 

    xargs reads reads from standard input and execute a command
    you can use it to perform operations in multiple files or directories
    echo "hello world" | xargs echo @ → reads the string and and add it to echo
    ls -d */ | xargs ls -lh @ → reads all directories and list them with long and human readable format
    xargs -a aaa.txt → like cat command displays the contents of a file
    common commands: -L → limits the input lines per command
    -P → runs multiple commands in parallel -I → replaces `@` with each input line as an argument instead of whitespace 


b - touch command

    touch is used to create new empty files
    it is also used to update the timestamp of a file
    It can do the above for one or multiple files
    touch my.txt → creates an empty file
    if the my.txt exists then it updates its timestamp
    touch my1.txt my2.txt → creates empty files
    touch myfile{1..5}.txt → creates 5 files using wildcards

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