FreeBSD

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Commands

This is a table of useful commands gleaned out of mailing lists and personal experience.

Command Description Command
Find the date of the newest file in a directory. awk -F^ '{ if ($1 > the_max) { the_max = $1; file_name = $2; } } END { print file_name }'</nowiki>
tail -1 | awk '{print $6" "$7" "$8}'</nowiki>
md5 all files in <foo> directory and find matches sort | uniq -c</nowiki>
Remove IP from interface.<br /><i>This works for the primary IP on an interface, too.</i> ifconfig <interface> <IP> -alias

Management

To enable passive mode for fetch when using pkg_add, sent the environment variable FTP_PASSIVE_MODE to something. If you use csh/tcsh, the following command will work: <pre># setenv FTP_PASSIVE_MODE 1</pre>

Networking

Virtualization

Ports/Applications

  • You can look up what options were passed to configure at /var/db/ports/{prtname}/options.

Jails

Postgres

Read Me!

System V

In jails on 8.0-RELEASE+, the host system security.jail.sysvipc_allowed sysctl is ignored. You can override this and enabled it with the following command, after a jail has started: <pre>jail -m jid=<JID> allow.sysvipc=1</pre>

Errors

Error Fix
Lookup of /dev for devfs, error: 2 The /dev directory was deleted/can't be found on the root filesystem. Recreate, reboot.

Building