2. The ____ is usually the first line in a Bash script.
a) $!/bin/bash
b) #!/bin/bash
c) #!bin/bash
d) #/bin/bash
3. The following configuration file contains encrypted local user account passwords:
a) /etc/shadow
b) /etc/passwords
c) The passwords are not stored locally, they are stored in a centralized network location.
d) /etc/group
e) /etc/gshadow
f) /etc/passwd
4. The following grep command will search the f.txt file for all lines that do not start with a numeric character.
a) Grep ‘^[^0-9]$’ f.txt
b) Grep ‘^[^0-9]’ f.txt
c) Grep ‘[^0-9]’ f.txt
d) Grep ‘^[0-9]^’ f.txt
e) Grep ‘^[0-9]’ f.txt