If you are trying reboot kloxo after Kloxo-MR update and you get this error:
/usr/sbin/hiawatha not found
yum install hiawatha
/etc/init.d/kloxo restart
/usr/sbin/hiawatha not found – Kloxo
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Monthly Archives: January 2014
nomodeset
The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded.
If you are using Ubuntu:
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”
update-grub
removing vg and lvm after physical drive has been removed
lvs
/dev/vm_backups/backup read failed after 0 of 4096 at 995903864832: Input/output error
/dev/vm_backups/backup read failed after 0 of 4096 at 995903922176: Input/output error
/dev/vm_backups/backup read failed after 0 of 4096 at 0: Input/output error
/dev/vm_backups/backup read failed after 0 of 4096 at 4096: Input/output error
dmsetup remove vm_backups-backup
or:
vgreduce –removemissing
HTTP traffic including request and response headers and message body
tcpdump -A -s 0 ‘tcp port 80 and (((ip[2:2] – ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)’
tcpdump -X -s 0 ‘tcp port 80 and (((ip[2:2] – ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)’
tcpdump monitor http traffic
HTTP GET:
tcpdump -s 0 -A ‘tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x47455420’
HTTP POST:
tcpdump -s 0 -A ‘tcp dst port 80 and (tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x504f5354)’
Satisfy Any vs Satisfy All
The Satisfy directive controls how Authentication directives (used for password protection) and access directives (e.g. Allow/Deny) interact with each other. You can instruct your Apache server to allow requests if either authentication or access requirements are met. Or you can insist that all criteria are met before allowing the request.
Fedora 20 install java
You web browser missing Java support on Fedora19/20, but you have java already installed.
yum remove java-*
yum remove icedtea-web*
yum install icedtea-web
restart web browser and check if java is available:
http://javatester.org/version.html
run chrome as root on Fedora
Its not safe, but sometimes useful:
vi /usr/bin/google-chrome
export LD_LIBRARY_PATH export CHROME_VERSION_EXTRA=”stable” # We don’t want bug-buddy intercepting our crashes. http://crbug.com/24120 export GNOME_DISABLE_CRASH_DIALOG=SET_BY_GOOGLE_CHROME exec -a “$0” “$HERE/chrome” “$@” –user-data-dir
linux find empty files and remove them
find /tmp -type f -empty -delete
mysql get table info
SELECT * FROM information_schema.TABLES WHERE TABLE_NAME = ‘myTableName’;