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Several people have submitted commands to do this, but I think this is the simplest solution. It also happens to be the most portable one: It should work with any sh or csh derived shell under any UNIX-like OS.
Oh by the way, with my German locale ($LC_TIME set appropriately) it prints "g" most of the time, and sometimes (on Wednesdays) it prints "h". It never prints "y".
Change open-command and type to suit your needs. One example would be to open the last .jpg file with Eye Of Gnome:
eog $(ls -rt *.jpg | tail -n 1)
Prints the top 10 memory consuming processes (with children and instances aggregated) sorted by total RSS and calculates the percentage of total RAM each uses. Please note that since RSS can include shared libraries it is possible for the percentages to add up to more that the total amount of RAM, but this still gives you a pretty good idea. Also note that this does not work with the mawk version of awk, but it works fine with GNU Awk which is on most Linux systems. It also does not work on OS X.
Finds all C++, Python, SWIG files in your present directory (uses "*" rather than "." to exclude invisibles) and counts how many lines are in them. Returns only the last line (the total).
This command loops over all of the processes in a system and creates an associative array in awk with the process name as the key and the sum of the RSS as the value. The associative array has the effect of summing a parent process and all of it's children. It then prints the top ten processes sorted by size.
Change the name of the process and what is echoed to suit your needs. The brackets around the h in the grep statement cause grep to skip over "grep httpd", it is the equivalent of grep -v grep although more elegant.
-f file(s) to be monitorized
-n number of last line to be printed on the screen
in this example, the content of two files are displayed
Prints the unique IP Addresses as they arrive from an Apache `access.log` file.
The '-W interactive' tells awk to start writing to stdout immediately and not buffer the output.
This command builds on the uniq lines without sorting command (http://www.commandlinefu.com/commands/view/4389/remove-duplicate-entries-in-a-file-without-sorting.)
Useful with new unknown devices or just monitoring, probably useful for the sysadmin. Updates every 2 seconds. More here: http://linuxclisecurity.blogspot.com/2009/12/monitor-kernel-ring-buffer.html.
Put into some file. No special purpouse, just for fun...
Figures out what has changed in the last 12 hours.
Change the author to yourself, change the time since to whatever you want.
The original version gives an error, here is the correct output
but you can't see the colors in that sample output :(
Calculates the size on disk for each package installed on the filesystem (or removed but not purged). This is missing the
| sort -rn
which would put the biggest packges on top. That was purposely left out as the command is slightly on the slow side
Also you may need to run this as root as some files can only be checked by du if you can read them ;)
"get Hong Kong weather infomation from HK Observatory
From Hong Kong Observatory wap site ;)"
other one showed alot of blank lines for me
change the *.avi to whatever you want to match, you can remove it altogether if you want to check all files.
show only the name of the apps that are using internet