fcoeadm – The Open-FCoE Administration Tool Creates an FCoE instance on eth2.101 fcoeadm -c eth2.101 Creates an FCoE VN2VN instance on eth2.101 fcoeadm -m vn2vn -c eth2.101 Destroys the FCoE instance on eth2.101 fcoeadm -d eth2.101 Resets the FCoE instance on eth2.101 fcoeadm -r eth2.101 Show the information of all the adapters and their ports …

fcnsq – Fibre Channel Name Server Query Tool Query Get Port Name (GPN) from host12 for Port ID 0xbf0027 fcnsq host12 –gpn bf0027 Query Get Node Name (GNN) from host12 for Port ID 0xbf0027 fcnsq host12 –gnn bf0027 Query Get Symbolic Port Name (GSPN) from host12 for Port ID 0xbf0027 fcnsq host12 –gspn bf0027 Query …

agetty – alternative Linux getty This section shows examples for the process field of an entry in the /etc/inittab file. You’ll have to prepend appropriate values for the other fields. For a hard-wired line or a console tty: /sbin/agetty 9600 ttyS1 For a directly connected terminal without proper carriage detect wiring: (try this if your terminal …

arp – manipulate the system ARP cache ARP stands for Address Resolution Protocol. ARP requests are cached for faster resolutions in your system. /usr/sbin/arp -i eth0 -Ds 10.0.0.2 eth1 pub This will answer ARP requests for 10.0.0.2 on eth0 with the MAC address for eth1. /usr/sbin/arp -i eth1 -d 10.0.0.1 Delete the ARP table entry …

autrace – a program similar to strace The following illustrates a typical session: autrace /bin/ls /tmp ausearch –start recent -p 2442 -i and for resource usage mode: autrace -r /bin/ls ausearch –start recent -p 2450 –raw | aureport –file –summary ausearch –start recent -p 2450 –raw | aureport –host –summary  

mdmon – monitor MD external metadata arrays #mdmon –all-active-arrays –takeover Any mdmon which is currently running is killed and a new instance is started. This should be run during in the boot sequence if an initramfs was used, so that any mdmon running from the initramfs will not hold the initramfs active.  

blkdeactivate — utility to deactivate block devices Deactivate all supported block devices found in the system. If a device is mounted, skip its deactivation. blkdeactivate Deactivate all supported block devices found in the system. If a device is mounted, unmount it first if possible. blkdeactivate -u Deactivate supplied device together with all its holders. If …

cupsctl – configure cupsd.conf options Display the current settings: #cupsctl Enable debug logging: #cupsctl –debug-logging Get the current debug logging state: #cupsctl | grep ‘^_debug_logging’ | awk -F= ‘{print $2}’ Disable printer sharing: #cupsctl –no-share-printers  

fipvlan – Fibre Channel over Ethernet VLAN Discovery Display all discoverable VLANs with FCoE services fipvlan –auto Discover FCoE VLANs on interface eth2, create VLAN devices and start the Open-FCoE initiator fipvlan –create –start eth2 In this example if FCoE services were available on VLAN 101 of network interface eth2, then a VLAN interface eth2.101 …

GlusterFS – Clustered Filesystem. Start a GlusterFS server on localhost with volume name foo glusterfsd -s localhost –volfile-id foo.server.media-disk-1 -p /var/lib/glus‐ terd/vols/foo/run/server-media-disk-1.pid -S /tmp/.socket –brick-name /media/disk-1 -l /var/log/glus‐ terfs/bricks/media-disk-1.log –brick-port 24009 –xlator-option foo-server.listen-port=24009