Stop bell/beep in bash
setterm -blength 0
Sets the bell length to zero for all applications
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Sets the bell length to zero for all applications
Get packet information on OS X
ipconfig getpacket en0
According to the manual page for ipconfig, this command appears to be unique to Mac OS X.
The command will display a bunch of useful info, including:
server_identifier (ip): That's your DHCP server's IP address.
yiaddr: Your machine's IP address.
chaddr: Your machine's MAC address.
domain_name_server: Your domain name server(s).
Find and change a users uid
Most useful for providing a consistent uid on machines accessing an NFS mount:
$ sudo find . -xdev -user <old-uid> -print -exec chown <new-uid> {} \;