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allowing commands to continue after parent shell exit
Alternatively, you can put "&" after the command before closing the shell, which daemonizes the child process. If the child process is already running, you can temporarily suspend it by hitting Ctrl-Z, then typing in "bg" (which "continues" the process daemonized). To bring the process back to the foreground, run "fg".
Code:$ sleep 100 # this is the process we'll daemonize ^Z # Ctrl-Z is immediate, Ctrl-Y suspends the process when it tries to read input [1]+ Stopped sleep 100 $ bg # short for "background"...only works on suspended processes [1]+ sleep 100 & <~~~ same as if you'd run "sleep 100 &" from the start $ time sleep 5 # a different "sleep" process real 0m5.003s user 0m0.004s sys 0m0.000s $ fg # bring the "old" sleep process that we daemonized back to the foreground sleep 100 ^C $ sleep 200 & # daemonize the process from the start [1] 2117 $ ps aux | grep sleep # look at the daemonized process user 2117 0.0 0.0 3232 616 pts/1 S 22:33 0:00 sleep 200 $ fg # bring the daemonized process back to the foreground sleep 200 ^C $
Posted 11-08-2011 at 10:35 PM by rocket357 
Updated 11-08-2011 at 10:42 PM by rocket357 -
allowing commands to continue after parent shell exit
GNU screen is also useful if you want to exit and resume later, e.g. over ssh.Posted 11-05-2011 at 09:49 AM by ewqdsacxz
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playing video on the desktop background
That;'s interesting, I'll try that soon
Posted 06-01-2011 at 11:12 PM by Aquarius_Girl
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checking 3D acceleration of graphics
Good point. One has to check whether the 3D rendering is being done by software or hardware.Posted 05-31-2011 at 05:55 PM by neonsignal
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checking 3D acceleration of graphics
That's not always the case:
$ glxinfo | grep direct
direct rendering: Yes
$ glxgears
1733 frames in 5.0 seconds = 346.452 FPS
1733 frames in 5.0 seconds = 346.516 FPS
1733 frames in 5.0 seconds = 346.525 FPS
^C
$ glxinfo | grep render
direct rendering: Yes
OpenGL renderer string: Software Rasterizer
GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_fragment_program,
$
~350 fps is entirely too slow for this to be true hardware acceleration, especially for an ATI HD 3450.Posted 05-31-2011 at 04:26 PM by rocket357
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Posted 05-24-2011 at 01:06 PM by peonuser
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remote shell access
I'm a big fan of installing fail2ban when sshd is running...Posted 05-08-2011 at 02:04 PM by rich_c
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