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cut -f1,2 - IP range 16
cut -f1,2,3 - IP range 24
cut -f1,2,3,4 - IP range 24
"nl -ba" numbers all lines in the file (including empty lines), "sort -nr"
sorts the lines in descending order, and the "cut" command finally removes
the line numbers again.
3 is the column's number.
printf reapeats the format as longer as it has arguments. Then the idea is to make cut retain as much fields as we have elements in the array.
As usual with such join/split string manipulation, you have to make sure you don't have conflicts between your separator and your array content.
shows number of mysql bin log events (which are mysql server events) per minute, useful to check stress times postmortem
Group membership in OS X is a mish-mash of standards that end up meaning there's almost a half-dozen of ways to belong to a group, what with group inheritance and automatic assignment. This means there's no easy command to find out all groups a user belongs to. The only sensible way then is to list all users and then query each user for membership.
NOTE: This is a function. Once input you can execute it by calling with a groupname.
When I do a major change in my entities, I want to find a way to find all my Entities names and create the commande for me.
So instead of doing ls src/Your/OwnBundle... and then do it manually, this helps a lot.
from my bashrc ;)
adjusting the field "f1" will give you additional information such as
f1 = 98%
f2 = discharging
f3 = 2:02 remaining
You must spezify /where folder and / folder
If you have another camera you must experiment with Exif data (after -g and after grep) and mask of your photo files IMG_????.JPG
I have do it on Knoppix 6.7.0
You must have installed exiv2.
A simple script for download all the MegaTokyo strips from the first to the last one
I alias this as "tach":
alias tach='screen -x `screen -ls | grep Detached | cut -c -10`'
If you have several detached sessions it will just grab the first one. If you're running nested screens you can open new outer windows and run tach repeatedly to grab all the detached sessions into that one.
This one liner is to kill all google chrome tabs. This works similar to $ killall firefox command which is to kill all firefox processes.
depends on date format locale ...
useful to count events in logs
Certain Flash video players (e.g. Youtube) write their video streams to disk in /tmp/ , but the files are unlinked. i.e. the player creates the file and then immediately deletes the filename (unlinking files in this way makes it hard to find them, and/or ensures their cleanup if the browser or plugin should crash etc.) But as long as the flash plugin's process runs, a file descriptor remains in its /proc/ hierarchy, from which we (and the player) still have access to the file. The method above worked nicely for me when I had 50 tabs open with Youtube videos and didn't want to have to re-download them all with some tool.
See who is using a specific port. Especially when you're using AIX. In Ubuntu, for example, this can easily be seen with the netstat command.
Only the number of calls nothing else.