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Commands by toxick

Commands by toxick from sorted by
Terminal - Commands by toxick - 2 results
netstat -tn | awk '($4 ~ /:22\s*/) && ($6 ~ /^EST/) {print substr($5, 0, index($5,":"))}'
2012-10-03 04:47:54
User: toxick
Functions: awk netstat
Tags: ssh awk netstat
1
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list current ssh clients
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
NUMCPUS=`grep ^proc /proc/cpuinfo | wc -l`; FIRST=`cat /proc/stat | awk '/^cpu / {print $5}'`; sleep 1; SECOND=`cat /proc/stat | awk '/^cpu / {print $5}'`; USED=`echo 2 k 100 $SECOND $FIRST - $NUMCPUS / - p | dc`; echo ${USED}% CPU Usage
2012-10-02 03:57:51
User: toxick
Functions: awk echo sleep wc
Tags: cpu shell usage ps command percentage
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Display CPU usage in percentage

Using the output of 'ps' to determine CPU usage is misleading, as the CPU column in 'ps' shows CPU usage per process over the entire lifetime of the process. In order to get *current* CPU usage (without scraping a top screen) you need to pull some numbers from /proc/stat. Here, we take two readings, once second apart, determine how much IDLE time was spent across all CPUs, divide by the number of CPUs, and then subtract from 100 to get non-idle time.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate