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Playing with screen

To create a new session:

$ screen

To retrieve a session (when there is only one running):

$ screen -r -d

To retrieve the list of existing sessions:

$ screen -ls

To retrieve a session (when many are running):

$ screen -r -d <name of the session>

To clear dead sessions:

$ screen -wipe

To detach a session:

<CTRL-A> D

technorati tags:screen, freebsd, linux, sysutils, sessions, man

Updating a FreeBSD 6.1 machine

To rebuild the world and install it on a running FreeBSD 6.1  machine:

<add a KERNCONF=YOUR_KERNEL_HERE entry in your /etc/make.conf file>
# make buildworld
# make kernel
# shutdown -r now
<reboot in single user mode>
# mergemaster -p
#make installworld
# make delete-old
# mergemaster
# shutdown -r now

Flash support in Firefox under FreeBSD

To have flash supported in Firefox under FreeBSD, the following tasks have to be done:

• install www/linuxpluginwrapper (portinstall linuxpluginwrapper)
• install www/linux-flashplugin7 (portinstall linux-flashplugin7)
• apply the rtld patch:
• download the patch from http://people.FreeBSD.org/~nork/rtld_dlsym_hack.diff
• copy the patch to the /usr/src directory
• apply the patch: # patch < rtld_dlsym_hack.diff
• rebuild rtld-elf
• cd /usr/src/libexec/rtld-elf
• make clean cleandir
• make clean cleandir (yes, twice!)
• make obj
• make depend
• make
• make install

And now it should work!

technorati tags:freebsd, articles, firefox, flash, rtld, elf

Mapping unsupported keys with xmodmap

Here is the plan:

• bind the currently unassigned keycodes to unused keysyms (e.g. F13, F14, ...)
• use xbindkeys or khotkeys (KDE) to execute commands (scripts, DCOP, ...) when those keys are pressed
  

To find the keycodes of the unsupported keys, use the following command:

xev | grep -A2 --line-buffered '^KeyRelease' | sed -n '/keycode /s/^.*keycode \([0-9]*\).* (.*, \(.*\)).*$/\1 \2/p'

Use your favorite text editor (vim, emacs, kate, nano, whatever) and put the corresponding lines in a file named .Xmodmap (note the dot and the capital X) under your home directory, like this:

keycode 160 = F13
keycode 174 = F14
keycode 176 = F15
...

For more info, have a look at /dev/loki: Mapping unsupported keys with xmodmap

technorati tags:keys, freebsd, articles, laptop, xorg