[Linux Commands] linux command #linux #commands

linux-commands.md

• grep keyword /var/spool/cron/root | egrep -v ^# | grep -v ^$ | awk '{print $1,$2,$3,$4,$5,$8}'
• cat netstat.log.5 | awk '$4 ~ /:80$/ {c++;print $5 | "sed 's/::ffff://' | sed 's/:.*$//'| sort | uniq -c | sort -n | tail -n 10"} END {print c}'
• netstat -plantu | grep -c :1433
• ifconfig eth0
• Print last 20 lines from the error_log file tail -20 /var/log/httpd/error_log
• Get max number of client on apache configuration grep -i maxclients /etc/httpd/conf/httpd.conf
• cat /etc/my.cnf | grep cache -i | grep -v ^#
• grep "^|" queries-pre-restart.txt | awk '{ print $14 }' | sort | uniq -c | sort -nr
• mkdir -p www/public_html Will make directory at nested level (it will create both directory)