Simple command

python -m SimpleHTTPServer port(自定义端口，默认8000)# python -m SimpleHTTPServer 8080# lftp localhost:21 -u user,password -e "put xxx.txt;quit"# > file# :> file# echo "" > file# cat /dev/null > file# rename .jpeg .jpg `find . -name "*.jpeg"`[root@localhost 09]# cd /usr//local/[root@localhost local]# cd /home/[root@localhost home]# pwd/home[root@localhost home]# cd -/usr/local[root@localhost local]# pwd/usr/local[root@localhost local]# # tar czvf my_back.tar.gz backs/  --exclude=website/logs/*nginx编译参数：#/usr/local/nginx/sbin/nginx -Vapache编译参数：# cat /usr/local/apache/build/config.nicephp编译参数：# /usr/local/php/bin/php -i |grep configuremysql编译参数：# cat /usr/local/mysql/bin/mysqlbug|grep configuresquid编译参数# /usr/local/squid/sbin/squid -v# netstat -n | awk '/^tcp/ {++S[$NF]};END {for(a in S) print a, S[a]}'# ss -s# ps -eo "%C : %p : %z : %a"|sort -k5 -nr# ksh# rm -f !(index.txt)# exit#sync#echo 3 > /proc/sys/vm/drop_caches# ps -e -o "%C : %p : %z : %a"|sort -nr [root@localhost ~]# cat kill_process.sh #!/bin/sh#for kill processps -ef |grep $1|grep -v grep |awk '{print $2}'|xargs kill -9#sh -x ./kill_process.sh php#pgrep http |xargs kill -9 Example 1: Find the process ID of the named daemon:       unix$ pgrep -u root named       Example 2: Make syslog reread its configuration file:       unix$ pkill -HUP syslogd       Example 3: Give detailed information on all xterm processes:       unix$ ps -fp $(pgrep -d, -x xterm)# echo -e "o\nn\np\n1\n\n\nw\n" | fdisk /dev/sdX# lsb_release -d# cp file{,.bak}# \cp file file# ls -d */# find . -maxdepth 1 -type d # find . -name ".svn" -type d -exec rm -fr {} \;# sed -n 'H;${g;s/\n/ /g;p;}' fileor# cat file |xargs# sed -n 's/ / \n/g'p file# awk '{$1="";print}'# rsync  -vzrtopg --progress --stats -e ssh /md2/log/201204/20/  root@10.0.2.5:/log/201204/20/awk 'BEGIN{sum=0}{sum+=$1}END{print sum}'cpan ExtUtils::MakeMaker File::Slurp Nagios::Plugin Nagios::Plugin::Getopt Nagios::Plugin::Thresholdecho "user:password"|chpasswd或者echo "password" | passwd --stdin usergpasswd -d user GROUPyum groupinstall "Development Tools"yum groupinstall "Development Libraries"find . -wholename './src/log' -prune -o -printfind . -path './log' -prune -o -printls -R -I './log'curl -o /dev/null -s -w %{time_namelookup}'\n'%{time_connect}'\n'%{time_starttransfer}'\n'%{size_request}'\n'%{time_total}'\n' http://www.gaizaoren.orgtime_namelookup 域名解析时间time_connect 连接时间time_starttransfer 开始传输时间time_total 总时间ethtool -s eth1 speed 1000 duplex full autoneg onsed -n '/xxx/,+2'p filesed -i 's/xxx/XXX/2g' file[root@yum ~]# date +%s1409193773[root@yum ~]# date -d '2014-08-08 22:22' +%s1407507720[root@yum ~]# date -d @1409193773Thu Aug 28 10:42:53 CST 2014[root@yum ~]# date -d @1409193773 +"%Y-%m-%d %H:%M:%S"2014-08-28 10:42:53[root@yum ~]# date -d @1407507720 +"%Y-%m-%d %H:%M:%S"        2014-08-08 22:22:00[root@yum ~]# #grep "ro," /proc/mounts