[root@SERVER ~]$ htpasswd
Usage:
htpasswd [-cmdpsD] passwordfile username
htpasswd -b[cmdpsD] passwordfile username password
htpasswd -n[mdps] username
htpasswd -nb[mdps] username password
-c Create a new file.
-n Don't update file; display results on stdout.
-m Force MD5 encryption of the password.
-d Force CRYPT encryption of the password (default).
-p Do not encrypt the password (plaintext).
-s Force SHA encryption of the password.
-b Use the password from the command line rather than prompting for it.
-D Delete the specified user.
On Windows, NetWare and TPF systems the '-m' flag is used by default.
On all other systems, the '-p' flag will probably not work.
[root@SERVER ~]$ htpasswd -c -m .htpasswd demo
[root@SERVER ~]$ htpasswd -m .htpasswd demo2
[root@SERVER ~]$ cat .htpasswd
demo:$apr1$BSd84/..$jY01qCKqhCXjTTb7Ei68k0
deom2:$apr1$yqiHm...$fqyPv.zd5cKglaz8XvYXs1