Linux User Space i2c
http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&ved=0CGkQFjAJ&url=http%3A%2F%2Fwww.haifux.org%2Flectures%2F258%2Fgpio_spi_i2c_userspace.pdf&ei=hu8EUKyaE8TNqgHrw-CxCA&usg=AFQjCNG-QNxl7brpTBTnzO2_JckFhdlC2Q
modprobe i2c-dev
CISCO Switch Commands
Show Commands
show version show boot show running-config show ip interface show file system show ip int brief | excl unassigned dir cd
Configure IP
enable configure t interface vlan1 ip address 192.168.11.200 255.255.255.0 no shutdown
Upgrade
Method 1, copy tar file and extract tar filecopy tftp://192.168.11.1/c2960c405-universalk9-tar.150-2.SE.tar c2960c405-universalk9-tar.150-2.SE.tar verify /md5 flash:/c2960c405-universalk9-tar.150-2.SE.tar config terminal boot system flash:/c2960c405-universalk9-mz.150-2.SE/c2960c405-universalk9-mz.150-2.SE.bin
Method 2, use archive commands which works with tar archive
archive download-sw /leave-old-sw /reload tftp://192.168.11.1/c2960c405-universalk9-tar.150-2.SE.tar
Method 3, bin file upgrade
copy tftp://192.168.11.1/c3560c405ex-universalk9-mz.150-2.SE.bin c3560c405ex-universalk9-mz.150-2.SE.bin config terminal boot system flash:c3560c405ex-universalk9-mz.150-2.SE.bin
Other commands
? copy ? delete /force /recursive c2960c405-universalk9-mz.150-2.SE copy system:running-config tftp://192.168.11.1/running-config copy nvram:startup-config tftp://192.168.11.1/startup-config copy running-config startup-config show ip int brief | excl unassigned
vlan
config t interface vlan303 ip address dhcp end ##wan interface GigabitEthernet0/10 switchport access vlan 303 switchport mode access no cdp enable spanning-tree portfast spanning-tree bpdufilter enable ##lan interface GigabitEthernet 0/5 switchport access vlan 303 switchport mode access
SNMP exec and extend
# cat /etc/snmp/snmpd.conf rocommunity public exec .1.3.6.1.4.1.2021.51 ps /bin/ps exec .1.3.6.1.4.1.2021.50 shelltest /bin/sh /tmp/shtest exec .1.3.6.1.4.1.2021.52 echotest /bin/echo hello world exec echotest11 /bin/echo hello world extend .1.3.6.1.4.1.2021.56 shelltest1 /bin/sh /tmp/test # snmpwalk -v 1 -c public localhost .1.3.6.1.4.1.2021.8 UCD-SNMP-MIB::extIndex.1 = INTEGER: 1 UCD-SNMP-MIB::extNames.1 = STRING: echotest11 UCD-SNMP-MIB::extCommand.1 = STRING: /bin/echo hello world UCD-SNMP-MIB::extResult.1 = INTEGER: 0 UCD-SNMP-MIB::extOutput.1 = STRING: hello world UCD-SNMP-MIB::extErrFix.1 = INTEGER: 0 UCD-SNMP-MIB::extErrFixCmd.1 = STRING: # snmpwalk -v 1 -c public localhost .1.3.6.1.4.1.2021.52 UCD-SNMP-MIB::ucdavis.52.1.1 = INTEGER: 1 UCD-SNMP-MIB::ucdavis.52.2.1 = STRING: "echotest" UCD-SNMP-MIB::ucdavis.52.3.1 = STRING: "/bin/echo hello world" UCD-SNMP-MIB::ucdavis.52.100.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.52.101.1 = STRING: "hello world" UCD-SNMP-MIB::ucdavis.52.102.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.52.103.1 = "" # snmpwalk -v 1 -c public localhost .1.3.6.1.4.1.2021.50 UCD-SNMP-MIB::ucdavis.50.1.1 = INTEGER: 1 UCD-SNMP-MIB::ucdavis.50.2.1 = STRING: "shelltest" UCD-SNMP-MIB::ucdavis.50.3.1 = STRING: "/bin/sh /tmp/shtest" UCD-SNMP-MIB::ucdavis.50.100.1 = INTEGER: 127 UCD-SNMP-MIB::ucdavis.50.101.1 = STRING: "/bin/sh: /tmp/shtest: No such file or directory" UCD-SNMP-MIB::ucdavis.50.102.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.50.103.1 = "" [root@vsp-devel ~]# snmpwalk -v 1 -c public localhost .1.3.6.1.4.1.2021.50 UCD-SNMP-MIB::ucdavis.50.1.1 = INTEGER: 1 UCD-SNMP-MIB::ucdavis.50.2.1 = STRING: "shelltest" UCD-SNMP-MIB::ucdavis.50.3.1 = STRING: "/bin/sh /tmp/shtest" UCD-SNMP-MIB::ucdavis.50.100.1 = INTEGER: 127 UCD-SNMP-MIB::ucdavis.50.101.1 = STRING: "/bin/sh: /tmp/shtest: No such file or directory" UCD-SNMP-MIB::ucdavis.50.102.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.50.103.1 = "" # snmpwalk -v 1 -c public localhost .1.3.6.1.4.1.2021.51 UCD-SNMP-MIB::ucdavis.51.1.1 = INTEGER: 1 UCD-SNMP-MIB::ucdavis.51.2.1 = STRING: "ps" UCD-SNMP-MIB::ucdavis.51.3.1 = STRING: "/bin/ps" UCD-SNMP-MIB::ucdavis.51.100.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.51.101.1 = STRING: " PID TTY TIME CMD" UCD-SNMP-MIB::ucdavis.51.101.2 = STRING: " 1 ? 00:00:01 init" UCD-SNMP-MIB::ucdavis.51.101.3 = STRING: " 2 ? 00:00:00 migration/0" UCD-SNMP-MIB::ucdavis.51.101.4 = STRING: " 3 ? 00:00:00 ksoftirqd/0" UCD-SNMP-MIB::ucdavis.51.101.5 = STRING: " 4 ? 00:00:00 watchdog/0" UCD-SNMP-MIB::ucdavis.51.101.6 = STRING: " 5 ? 00:00:00 migration/1" UCD-SNMP-MIB::ucdavis.51.101.7 = STRING: " 6 ? 00:02:33 ksoftirqd/1" UCD-SNMP-MIB::ucdavis.51.101.8 = STRING: " 7 ? 00:00:00 watchdog/1" UCD-SNMP-MIB::ucdavis.51.101.9 = STRING: " 8 ? 00:00:00 events/0" UCD-SNMP-MIB::ucdavis.51.101.10 = STRING: " 9 ? 00:00:00 events/1" UCD-SNMP-MIB::ucdavis.51.101.11 = STRING: " 10 ? 00:00:00 khelper" UCD-SNMP-MIB::ucdavis.51.101.12 = STRING: " 11 ? 00:00:00 kthread" UCD-SNMP-MIB::ucdavis.51.101.13 = STRING: " 15 ? 00:00:04 kblockd/0" UCD-SNMP-MIB::ucdavis.51.101.14 = STRING: " 16 ? 00:00:00 kblockd/1" UCD-SNMP-MIB::ucdavis.51.101.15 = STRING: " 17 ? 00:00:00 kacpid" UCD-SNMP-MIB::ucdavis.51.101.16 = STRING: " 131 ? 00:00:00 cqueue/0" UCD-SNMP-MIB::ucdavis.51.101.17 = STRING: " 132 ? 00:00:00 cqueue/1" UCD-SNMP-MIB::ucdavis.51.101.18 = STRING: " 135 ? 00:00:00 khubd" UCD-SNMP-MIB::ucdavis.51.101.19 = STRING: " 137 ? 00:00:00 kseriod" UCD-SNMP-MIB::ucdavis.51.101.20 = STRING: " 205 ? 00:00:00 khungtaskd" UCD-SNMP-MIB::ucdavis.51.101.21 = STRING: " 208 ? 00:00:07 kswapd0" UCD-SNMP-MIB::ucdavis.51.101.22 = STRING: " 209 ? 00:00:00 aio/0" UCD-SNMP-MIB::ucdavis.51.101.23 = STRING: " 210 ? 00:00:00 aio/1" UCD-SNMP-MIB::ucdavis.51.101.24 = STRING: " 370 ? 00:00:00 kpsmoused" UCD-SNMP-MIB::ucdavis.51.101.25 = STRING: " 402 ? 00:00:00 scsi_eh_0" UCD-SNMP-MIB::ucdavis.51.101.26 = STRING: " 403 ? 00:01:17 usb-storage" UCD-SNMP-MIB::ucdavis.51.101.27 = STRING: " 408 ? 00:00:00 ata/0" UCD-SNMP-MIB::ucdavis.51.101.28 = STRING: " 409 ? 00:00:00 ata/1" UCD-SNMP-MIB::ucdavis.51.101.29 = STRING: " 410 ? 00:00:00 ata_aux" UCD-SNMP-MIB::ucdavis.51.101.30 = STRING: " 417 ? 00:00:00 kstriped" UCD-SNMP-MIB::ucdavis.51.101.31 = STRING: " 430 ? 00:00:00 ksnapd" UCD-SNMP-MIB::ucdavis.51.101.32 = STRING: " 447 ? " UCD-SNMP-MIB::ucdavis.51.102.1 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.51.103.1 = ""
YUM Remove Orphaned Packages
Find Orphaned Packages
package-cleanup --orphansThen remove the old fc-xx packages that no longer supported with "yum remove".
Fedora 17 Nouveau Driver
X does not load with default Nouveau driver option. Add the following to the kernel option to make it work
nouveau.noaccel=1Alternatively create /etc/modprobe.d/noaccel.conf with
options nouveau noaccel=1
rpmbuild anaconda
$ echo "%_topdir /home/$USER/anaconda/rpm" > ~/.rpmmacros
$ cd ~/anaconda
$ mkdir -p rpm/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
$ rpm -i anaconda-11.1.2.113-1.el5.centos.2.src.rpm #extract source
$ cd rpm/SPECS
$ rpmbuild -ba anaconda.spec
Building loader
$ cd rpm/BUILD/anaconda-11.1.2.209/loader2 $ make loader
Repacking Centos Stage2 Image
Extracting
/usr/sbin/unsquashfs -dest centos-stage2 stage2.img
Repacking
# cd centos-stage2 # tar cf - * .buildstamp | (cd ../centos-stage2-new; tar xfp -) // make change in centos-stage2-new # cd centos-stage2-new # mksquashfs . ../stage2.img.new -all-root -no-fragments -noappend
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