How to I remove an OS user from Linux?

Warning: As always, please exercise caution when performing system maintenance, especially when initiating processes that can potentially delete data.

Locking a User Account

In most cases, there is no reason to remove an OS user. It is better to simply lock down the account to prevent any future login.

Remove User

How do I find my Linux server’s IP address?

To find the LAN IP address, open a shell and run:

/sbin/ifconfig

Look for the inet addr in the output, which will look like below:

eth0      Link encap:Ethernet  HWaddr 00:22:19:84:9B:E8
          inet addr:192.168.1.89  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::222:19ff:fe84:9be8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8380921 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8360250 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:806377947 (769.0 MiB)  TX bytes:752649055 (717.7 MiB)
          Interrupt:169 Memory:f8000000-f8012100

How do I find my AIX server’s IP address?

To find the LAN IP address, open a shell and run:

ifconfig -a

Look for the inet addr in the output, which will look like below:

en0: flags=5e080863,c0
        inet 172.17.188.74 netmask 0xfffffe00 broadcast 172.17.189.255
         tcp_sendspace 131072 tcp_recvspace 65536
lo0: flags=e08084b
        inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255
        inet6 ::1/0
         tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1