Commands by snorf

Commands by snorf (2)

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Calculate CPU load limit on GNU/Linux

shell order of operation example which calculates: x = number of physical CPU's y = number of cores per CPU 2(x * y) + 1 = CPU load limit Show Sample Output
This is sample output - yours may be different.
```
9
```
0

echo "$(( $(( $(grep 'physical id' '/proc/cpuinfo' | uniq | wc -l) * $(grep 'core id' '/proc/cpuinfo' | wc -l) )) * 2 + 1 ))"

snorf · 2015-11-14 20:44:39 1
create 7 variables using output of date command

minimal oneliner to keep track of time Show Sample Output
This is sample output - yours may be different.
```
echo $year $month $day $hour $minutes $seconds $epoch
2015 11 10 23 24 21 1447226661
```
0

read year month day hour minutes seconds epoch _ < <(date '+%Y %m %d %H %M %S %s')

snorf · 2015-11-11 07:27:37 0

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rotate the compiz cube via command line

0-1279 = desktop 1 region = face 1 1280-2559 = face 2 ==>> wmctrl 1280 = wmctrl (1281,...2559) are all the same for a 1280 monitor resolution math: argument of wmctrl -o = ( DesiredFace * HorizontalResolution - 1)

Add a progress counter to loop (see sample output)

For this hack you need following function: $ finit() { count=$#; current=1; for i in "$@" ; do echo $current $count; echo $i; current=$((current + 1)); done; } and alias: $ alias fnext='read cur total && echo -n "[$cur/$total] " && read' Inspired by CMake progress counters.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Scrape commands from commandline fu's 1st page

just bored here at work ... if your are daring ... add '| bash' .... enjoy require 'ruby'

nmap get all active online ips from specific network

scan whole specific network for active online ips

Set all CPU cores' CPU frequency scaling governor to maximum performance

kill some process (same as others) but parsing to a variable

Kills a process matching program. I suggest using $ pgrep -fl program to avoid over-killings Nice the following: kills all bash process owned by guest $ pkill -9 -f bash -u guest

Recursively Add Changed Files to Subversion

Extracted from http://www.howtogeek.com/wiki/Recursively_Add_Changed_Files_to_Subversion

statistics in one line

In this example, file contains five columns where first column is text. Variance is calculated for columns 2 - 5 by using perl module Statistics::Descriptive. There are many more statistical functions available in the module.

Convert current symbolic directory into physical directory

Stay in the loop…

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