pwck, grpck - password/group file checkers

When checking the /etc/passwd or /etc/group files using the commands

password check pwck, and group check grpck, one needs to be having root access.

# id

uid=0(root) gid=0(root) groups=0(root),1(other),2(bin),3(sys),4(adm),5(uucp),6(mail),7(tty),8(lp),9(nuucp),12(daemon)

As you can see if no arguments is provided, the pwck default argument

file is /etc/passwd and the grpck default argument file is /etc/group file.

# pwck

lp:x:71:8:Line Printer Admin:/usr/spool/lp:

uucp:x:5:5:uucp Admin:/usr/lib/uucp:

nuucp:x:9:9:uucp Admin:/var/spool/uucppublic:/usr/lib/uucp/uucico

Optional shell file not found

# id

uid=0(root) gid=0(root) groups=0(root),1(other),2(bin),3(sys),4(adm),5(uucp),6(mail),7(tty),8(lp),9(nuucp),12(daemon)

# grpck

# pwck /etc/passwd

lp:x:71:8:Line Printer Admin:/usr/spool/lp:

uucp:x:5:5:uucp Admin:/usr/lib/uucp:

nuucp:x:9:9:uucp Admin:/var/spool/uucppublic:/usr/lib/uucp/uucico

Optional shell file not found

# grpck /etc/group

Please click on " man pwck " to see the Manual Page for this command.

Please click on " man grpck " to see the Manual Page for this command.