📌 Day-5: Linux Core Utilities.

Linux Commands can be combined and make a powerfull scripts. BASH programming language helps to make athe scripts on linux.

1) Simple Cryptography by [tr] command

tr means text replace, this command used to replace some letters with another word, like the ROT encodes.

    cat yourtext.txt | tr 'A-Za-z' 'B-Zb-z'

2) Finding a specific text from a folder.

grep can help us here.
grep have an option called recursive( -r )

    ls path | grep -r "TEXT"

3) Changing a filename with a sequenced textx.

    for i in *;do mv $i 00$i