Search in File system

Linux

find

• Find id_rsa file from the root directory.

find / -name id_rsa 2> /dev/null

• it finds all files with the setuid permission on your system without showing any error messages.

find / -perm -u=s -type f 2>/dev/null

grep

It searches through all files on your system, starting from the root, for the string PASSWORD=, highlights matches, and shows the lines where it was found, while hiding any error messages.

grep --color=auto -rnw '/' -ie "PASSWORD=" --color=always 2> /dev/null