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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
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Replace "url" with the correct address of what your're downloading. Replace 01:00 with what time you want. (24-hour clock).
By 'pst' you can print out process tree with all details about all processes (including a command line, PID, and the current process you are running in).
By 'pst username' you can get an information about processes belonging to the particular user 'username'.
Ever had a file with a list of numbers you wanted to add, use:
cat file | sed ':a;N;$!ba;s/\n/+/g' | bc
* size must be 640?480 pixels
* only has 14 colors
* save it in XPM format
Edit /boot/grub/menu.lst and add
splashimage=(hd0,0)/boot/grub/grubimg.xpm
make sure for your path name and hard disk
NOT MINE! Taken from hackzine.com blog.
It creates a tree-style output of all the (sub)folders and (sub)files from the current folder and down(deeper)
Quoting some of hackzine's words
"Murphy Mac sent us a link to a handy find/sed command that simulates the DOS tree command that you might be missing on your Mac or Linux box. [..split...] Like most things I've seen sed do, it does quite a bit in a single line of code and is completely impossible to read. Sure it's just a couple of substitutions, but like a jack in the box, it remains a surprise every time I run it."
cd into the directory that contains the file.
this is just the usual move command but shortcut'd.
say you wanted to move a photo img1.png from ~/photos/holidayphotos into the parent directory which is ~/photos
command would be:
~/photos/holidayphotos$ mv img1.png ..
I use Ubuntu so this'll work in debian but not sure what else.
Suppose you made a backup of your hard disk with dd:
dd if=/dev/sda of=/mnt/disk/backup.img
This command enables you to mount a partition from inside this image, so you can access your files directly.
Substitute PARTITION=1 with the number of the partition you want to mount (returned from sfdisk -d yourfile.img).
The large context number (-C 1000) is a bit of a hack, but in most of my use cases, it makes sure I'll see the whole log output.
This is useful if you have a program which doesn't work well with multicore CPUs. With taskset you can set its CPU affinity to run on only one core.
I use this command on my machines running VMware Server to print out the state of all registered Virtual machines.