diff --git a/plugins/systemadmin/systemadmin.zsh b/plugins/systemadmin/systemadmin.zsh
new file mode 100644
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+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+# This is one for the system administrator, operation and maintenance.
+# Some of which come from http://justinlilly.com/dotfiles/zsh.html
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+# * Dongweiming <ciici123@gmail.com>
+#
+# ------------------------------------------------------------------------------
+
+function retval() {
+    if [[ -z $1 ]];then
+        echo '.'
+    else
+        echo $1
+    fi
+}
+
+function retlog() {
+    if [[ -z $1 ]];then
+        echo '/var/log/nginx/access.log'
+    else
+        echo $1
+    fi
+}
+
+alias ping='ping -c 5'
+alias clr='clear;echo "Currently logged in on $(tty), as $(whoami) in directory $(pwd)."'
+alias path='echo -e ${PATH//:/\\n}'
+alias mkdir='mkdir -pv'
+# get top process eating memory
+alias psmem='ps -e -orss=,args= | sort -b -k1,1n'
+alias psmem10='ps -e -orss=,args= | sort -b -k1,1n| head -10'
+# get top process eating cpu if not work try excute : export LC_ALL='C'
+alias pscpu='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1 -nr'
+alias pscpu10='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1 -nr | head -10'
+# top10 of the history
+alias hist10='print -l ${(o)history%% *} | uniq -c | sort -nr | head -n 10'
+
+# directory LS
+dls () {
+    ls -l | grep "^d" | awk '{ print $9 }' | tr -d "/"
+}
+psgrep() {
+    ps aux | grep "$(retval $1)" | grep -v grep
+}
+# Kills any process that matches a regexp passed to it
+killit() {
+    ps aux | grep -v "grep" | grep "$@" | awk '{print $2}' | xargs sudo kill
+}
+
+# list contents of directories in a tree-like format
+if [ -z "\${which tree}" ]; then
+  tree () {
+      find $@ -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'
+  }
+fi
+
+# Sort connection state
+sortcons() {
+    netstat -nat |awk '{print $6}'|sort|uniq -c|sort -rn
+}
+
+# View all 80 Port Connections
+con80() {
+    netstat -nat|grep -i ":80"|wc -l
+}
+
+# On the connected IP sorted by the number of connections
+sortconip() {
+    netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
+}
+
+# top20 of Find the number of requests on 80 port
+req20() {
+    netstat -anlp|grep 80|grep tcp|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -nr|head -n20
+}
+
+# top20 of Using tcpdump port 80 access to view
+http20() {
+    sudo tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F"." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr |head -20
+}
+
+# top20 of Find time_wait connection
+timewait20() {
+    netstat -n|grep TIME_WAIT|awk '{print $5}'|sort|uniq -c|sort -rn|head -n20
+}
+
+# top20 of Find SYN connection
+syn20() {
+    netstat -an | grep SYN | awk '{print $5}' | awk -F: '{print $1}' | sort | uniq -c | sort -nr|head -n20
+}
+
+# Printing process according to the port number
+port_pro() {
+    netstat -ntlp | grep "$(retval $1)" | awk '{print $7}' | cut -d/ -f1
+}
+
+# top10 of gain access to the ip address
+accessip10() {
+    awk '{counts[$(11)]+=1}; END {for(url in counts) print counts[url], url}' "$(retlog)"
+}
+
+# top20 of Most Visited file or page
+visitpage20() {
+    awk '{print $11}' "$(retlog)"|sort|uniq -c|sort -nr|head -20
+}
+
+# top100 of Page lists the most time-consuming (more than 60 seconds) as well as the corresponding page number of occurrences
+consume100() {
+    awk '($NF > 60 && $7~/\.php/){print $7}' "$(retlog)" |sort -n|uniq -c|sort -nr|head -100
+    # if django website or other webiste make by no suffix language
+    # awk '{print $7}' "$(retlog)" |sort -n|uniq -c|sort -nr|head -100
+}
+
+# Website traffic statistics (G)
+webtraffic() {
+    awk "{sum+=$10} END {print sum/1024/1024/1024}" "$(retlog)"
+}
+
+# Statistical connections 404
+c404() {
+    awk '($9 ~/404/)' "$(retlog)" | awk '{print $9,$7}' | sort
+}
+
+# Statistical http status.
+httpstatus() {
+    awk '{counts[$(9)]+=1}; END {for(code in counts) print code, counts[code]}' "$(retlog)"
+}
+
+# Delete 0 byte file
+d0() {
+    find "$(retval $1)" -type f -size 0 -exec rm -rf {} \;
+}
+
+# gather external ip address
+geteip() {
+    curl http://ifconfig.me
+}
+
+# determine local IP address
+getip() {
+    ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'
+}
+
+# Clear zombie processes
+clrz() {
+    ps -eal | awk '{ if ($2 == "Z") {print $4}}' | kill -9
+}
+
+# Second concurrent
+conssec() {
+    awk '{if($9~/200|30|404/)COUNT[$4]++}END{for( a in COUNT) print a,COUNT[a]}' "$(retlog)"|sort -k 2 -nr|head -n10
+}