By default, chown changes the ownership of the file pointed to by the link, not the link itself. If you need to change the link's owner/group, use the "-h" option.
-h If the file is a symbolic link, change the owner of
the symbolic link. Without this option, the owner of
the file referenced by the symbolic link is changed.
Ex: #chown -h root:root /etc/hosts
#chgrp -h new_group symbolic_link_name
Tuesday, October 27, 2009
Sunday, October 25, 2009
Networking
How do I find the speed my network card is at?
a. /usr/sbin/ndd -set /dev/hme instance 0
1. instance 0 - hme0
2. instance 1 - hme1
b. /usr/sbin/ndd -get /dev/hme transciever_inuse
1. 0 - onboard
2. 1 - offboard card (mii)
c. /usr/sbin/ndd -get /dev/hme link_status
1. 0 - down
2. 1 - up
d. /usr/sbin/ndd -get /dev/hme link_speed
1. 0 - 10Mb
2. 1 - 100Mb
e. /usr/sbin/ndd -get /dev/hme link_mode
1. 0 - half duplex
2. 1 - full duplex
2. How do I configure what my network card is capable of?
a. Method 1
1. /etc/system
a. this sets global defaults for the driver, therefore
it is effective for all instances of the card
b. HME/QFE/GE interfaces
1. set hme:hme_adv_autoneg_cap=0
a. advertise auto negotiate capability
b. 0 - off
c. 1 - on
2. set hme:hme_adv_100T4=0
a. advertise deprecated 100Mbit T4 capability
b. 0 - off
c. 1 - on
3. set hme:hme_adv_100fdx=0
a. advertise 100Mbit full duplex capability
b. 0 - off
c. 1 - on
4. set hme:hme_adv_100hdx=0
a. advertise 100Mbit half duplex capability
b. 0 - off
c. 1 - on
5. set hme:hme_adv_10fdx=0
a. advertise 10Mbit full duplex capability
b. 0 - off
c. 1 - on
6. set hme:hme_adv_10hdx=0
a. advertise 10Mbit half duplex capability
b. 0 - off
c. 1 - on
c. ERI interface
1. set eri:adv_autoneg_cap=0
a. advertise auto negotiate capability
b. 0 - off
c. 1 - on
2. set eri:adv_100T4=0
a. advertise deprecated 100Mbit T4 capability
b. 0 - off
c. 1 - on
3. set eri:adv_100fdx=0
a. advertise 100Mbit full duplex capability
b. 0 - off
c. 1 - on
4. set eri:adv_100hdx=0
a. advertise 100Mbit half duplex capability
b. 0 - off
c. 1 - on
5. set eri:adv_10fdx=0
a. advertise 10Mbit full duplex capability
b. 0 - off
c. 1 - on
6. set eri:adv_10hdx=0
a. advertise 10Mbit half duplex capability
b. 0 - off
c. 1 - on
c. QE/LE interfaces
1. these 10mbit interfaces dont support full duplex
operation
b. Method 2
1. This method allows more granular control over the interface
driver. You can specify configuration by port.
2. /usr/sbin/ndd -set /dev/hme instance 0
a. instance 0 - hme0
b. instance 1 - hme1
b. /usr/sbin/ndd -set /dev/hme adv_autoneg_cap 0
1. advertise auto negotiate capability
2. 0 - off
3. 1 - on
c. /usr/sbin/ndd -set /dev/hme adv_100fdx_cap 0
1. advertise 100Mbit full duplex capability
2. 0 - off
3. 1 - on
d. /usr/sbin/ndd -set /dev/hme adv_100hdx_cap 0
1. advertise 100Mbit half duplex capability
2. 0 - off
3. 1 - on
e. /usr/sbin/ndd -set /dev/hme adv_100T4_cap 0
1. advertise deprecated 100Mbit T4 capability
2. 0 - off
3. 1 - on
f. /usr/sbin/ndd -set /dev/hme adv_10fdx_cap 0
1. advertise 10Mbit full duplex capability
2. 0 - off
3. 1 - on
g. /usr/sbin/ndd -set /dev/hme adv_10hdx_cap 0
1. advertise 10Mbit half duplex capability
2. 0 - off
3. 1 - on
3. How do I configure what my link partner is capable of?
a. /usr/sbin/ndd -set /dev/hme instance 0
1. instance 0 - hme0
2. instance 1 - hme1
b. /usr/sbin/ndd -get /dev/hme lp_autoneg_cap
1. link partner has auto negotiate capability
2. 0 - off
3. 1 - on
c. /usr/sbin/ndd -get /dev/hme lp_100fdx_cap
1. link partner has 100Mbit full duplex capability
2. 0 - off
3. 1 - on
d. /usr/sbin/ndd -get /dev/hme lp_100hdx_cap
1. link partner has 100Mbit half duplex capability
2. 0 - off
3. 1 - on
e. /usr/sbin/ndd -get /dev/hme lp_100T4_cap
1. link partner has deprecated 100Mbit T4 capability
2. 0 - off
3. 1 - on
f. /usr/sbin/ndd -get /dev/hme lp_10fdx_cap
1. link partner has 10Mbit full duplex capability
2. 0 - off
3. 1 - on
g. /usr/sbin/ndd -get /dev/hme lp_10hdx_cap
1. link partner has 10Mbit half duplex capability
2. 0 - off
3. 1 - on
4. How can I tell if my card is active on the network?
a. Method 1 (Openboot PROM)
1. watch-net
5. How do I use multiple ethernet interfaces on the same network segment?
a. Method 1 (modern cards, 1997+)
1. Modern Sun Adapters have unique mac addresses encoded in the FCode Prom.
2. /usr/sbin/eeprom local-mac-address?=true
b. Method 2 (older cards)
1. From InfoDoc 16733; "Section 3.2.3(4) of the IEEE 802.3 spec
defines a reserved bit in the Ethernet Address that can be
used to administer a universally assigned ethernet
addresses. A Locally administered address (LAA) can be
implemented to ensure a unique HW address."
2. Setting the LAA bit can be done by using a 0A hex as the
first digit instead of 08.
3. /usr/sbin/ifconfig hme1 ether 0a:0:20:00:01
6. How do I determine if local mac addresses are in use on my host?
a. /usr/sbin/prtconf -pv | /usr/bin/grep local-mac-address
Veritas Volume Manager
1. How do I allow a user to write to a managed raw device?
a. /usr/bin/chown is not persistent across reboots
b. /usr/sbin/vxedit set user=oracle group=dba mode=600 volume
How do I use an alternate window manager?
a. Bypassing CDE
1. echo "exec /path/to/alternate/window/manager" > .xsession
b. Maintaining CDE
1. Xresources
a. cd /usr/dt/config/C/Xresources.d
b. /usr/bin/cp Xresources.ow Xresources.wm
c. Modify Xresources.wm
1. Dtlogin*altDtName: Alternate WindowManager
2. Dtlogin*altDtKey: /path/to/alternate/window/manager
3. Dtlogin*altDtStart: /usr/dt/config/Xsession.wm
4. Dtlogin*altDtLogo: WMlogo
2. Xsession
a. cd /usr/dt/config
b. /usr/bin/cp Xsession.ow Xsession.wm
c. Modify Xsession.wm
1. Place windowmanager environment
3. Logo (for display in CDE login)
a. cd /usr/dt/appconfig/icons/C
b. /usr/bin/cp OWlogo.pm WMlogo.pm
1. Replace this with your own XPM file
2. How do I disable X Windows from starting at boot?
a. Method 1 (recommended)
1. /usr/dt/bin/dtconfig -d
b. Method 2
1. /usr/bin/mv /etc/rc2.d/S99dtlogin /etc/rc2.d/s99dtlogin
How do I grow a ufs filesystem?
2. How do I grow a ufs filesystem?
a. Unmounted filesystem (not /, /usr, /var)
1. Allocate additional contiguous disk space with format(1m)
a. Unnecessary if you are using a volume manager
2. /usr/lib/fs/ufs/mkfs -G rawdevice newsize
b. Mounted filesytem (not /, /usr, /var)
1. Allocate additional contiguous disk space with format(1m)
a. Unnecessary if you are using a volume manager
2. /usr/lib/fs/ufs/mkfs -G -M mountpoint rawdevice newsize
3. How do I determine what type of filesystem a given device has?
a. Method 1 (root)
1. /usr/sbin/fstyp blockdevice
4. What are inodes 0, 1, and 2 used for?
a. Inode 0 is unusable. It is used to mark unused inodes.
b. Inode 1 is unusable. Use of this inode for bad block information
is deprecated.
c. Inode 2 is "/" or "root" of the filesystem.
5. What do I do if I have a corrupt boot block?
a. ok boot cdrom -s
b. /usr/sbin/installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rd
How do I add a disk to the system?
How do I add a disk to the system?
a. While the system is up ( no fcal)
1. Solaris <= 7
a. Generate /devices structure
1. /usr/sbin/drvconfig
b. Generate /dev structure
1. /usr/sbin/devlinks
c. Generate /dev/dsk and /dev/rdsk links
1. /usr/sbin/disks
2. Solaris 8
a. Generate /devices, /dev, /dev/dsk, /dev/rdsk links
1. /usr/sbin/devfsadm
b. While the system is up ( fcal )
1. Get the enclosure name
a. /usr/sbin/luxadm probe
2. Add the disk
a. /usr/sbin/luxadm insert_device enclosure,slot
c. With a reboot
1. Method 1
a. /usr/sbin/shutdown -g0 -i0 "disk addition"
b. Reconfigure Boot (From OpenBoot PROM monitor)
1. boot -r
2. Method 2
a. /usr/bin/touch /reconfigure
How do I know the limits for shared memory kernel tunables?
How do I know the limits for shared memory kernel tunables?
a. Read /usr/include/sys/shm.h
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