top¶

Get Current CPU Usage¶

top -n2 -d 0.5 | grep ^Cpu | sed 's/[[:alpha:]%]*//g' | awk 'NR == 2 {printf("%.2f\n",100-$5)}'

Monitor specific process (ie apache) using Top¶

top -p `pidof apache2 | awk '{gsub(/[ ]/,",");print}'`

Kill processes hogging up CPU (Flash after resume)¶

top -bn 1 |  awk '{if($1 ~ /^[0-9]+$/ && $9 > 97) {print $1;exit}}'|xargs kill

Show the number of current httpd processes¶

top -b -n 1 |grep httpd|wc -l

View process statistics in realtime¶

top

Use top to monitor only all processes with the same name fragment 'foo'¶

top $(pgrep foo | sed 's|^|-p |g')

count processes with status "D" uninterruptible sleep¶

top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'

Processes by CPU usage¶

top -b -n 1 | sed 1,6d

Use top to monitor only all processes with the same name fragment 'foo'¶

top '-p' $(pgrep -d ' -p ' foo)

Top Command in batch mode¶

top -b -n 1

Use top to monitor only all processes with the same name fragment 'foo'¶

top -p $(pgrep -d , foo)

Shows cpu load in percent¶

top -bn2|awk -F, '/Cpu/{if (NR>4){print 100-gensub(/.([^ ]+).*/,"\\1","g",$4)}}'

Monitor especific process with top¶

top -p `pgrep pidgin`

Display the top ten running processes - sorted by memory usage¶

top -b -o +%MEM |head -17

Use top to monitor only all processes with the same name fragment 'foo'¶

top $(pgrep foo | sed 's|^|-p |g')

count processes with status "D" uninterruptible sleep¶

top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'

Processes by CPU usage¶

top -b -n 1 | sed 1,6d

Use top to monitor only all processes with the same name fragment 'foo'¶

top '-p' $(pgrep -d ' -p ' foo)

Top Command in batch mode¶

top -b -n 1

Use top to monitor only all processes with the same name fragment 'foo'¶

top -p $(pgrep -d , foo)

Shows cpu load in percent¶

top -bn2|awk -F, '/Cpu/{if (NR>4){print 100-gensub(/.([^ ]+).*/,"\\1","g",$4)}}'

Monitor especific process with top¶

top -p `pgrep pidgin`