refactor(systemadmin): use `ss` instead of `netstat` when available (#11957)

plugins/systemadmin/systemadmin.plugin.zsh

@@ -28,8 +28,8 @@ alias mkdir='mkdir -pv'
 alias psmem='ps -e -orss=,args= | sort -b -k1 -nr'
 alias psmem10='ps -e -orss=,args= | sort -b -k1 -nr | head -n 10'
 # get top process eating cpu if not work try execute : export LC_ALL='C'
-alias pscpu='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1,1n -nr'
+alias pscpu='ps -e -o pcpu,cpu,nice,state,cputime,args | sort -k1,1n -nr'
-alias pscpu10='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1,1n -nr | head -n 10'
+alias pscpu10='ps -e -o pcpu,cpu,nice,state,cputime,args | sort -k1,1n -nr | head -n 10'
 # top10 of the history
 alias hist10='print -l ${(o)history%% *} | uniq -c | sort -nr | head -n 10'
 
@@ -62,42 +62,60 @@ fi
 
 # Sort connection state
 function sortcons() {
-    netstat -nat |awk '{print $6}'|sort|uniq -c|sort -rn
+  {
+    LANG= ss -nat | awk 'NR > 1 {print $1}' \
+    || LANG= netstat -nat | awk 'NR > 2 {print $6}'
+  } | sort | uniq -c | sort -rn
 }
 
 # View all 80 Port Connections
 function con80() {
-    netstat -nat|grep -i ":80"|wc -l
+  {
+    LANG= ss -nat || LANG= netstat -nat
+  } | grep -E ":80[^0-9]" | wc -l
 }
 
 # On the connected IP sorted by the number of connections
 function sortconip() {
-    netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
+  {
+    LANG= ss -ntu | awk 'NR > 1 {print $6}' \
+    || LANG= netstat -ntu | awk 'NR > 2 {print $5}'
+  } | cut -d: -f1 | sort | uniq -c | sort -n
 }
 
 # top20 of Find the number of requests on 80 port
 function req20() {
-    netstat -anlp|grep 80|grep tcp|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -nr|head -n20
+  {
+    LANG= ss -tn | awk '$4 ~ /:80$/ {print $5}' \
+    || LANG= netstat -tn | awk '$4 ~ /:80$/ {print $5}'
+  } | awk -F: '{print $1}' | sort | uniq -c | sort -nr | head -n 20
 }
 
 # top20 of Using tcpdump port 80 access to view
 function http20() {
-    sudo tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F"." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr |head -n 20
+  sudo tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F"." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr | head -n 20
 }
 
 # top20 of Find time_wait connection
 function timewait20() {
-    netstat -n|grep TIME_WAIT|awk '{print $5}'|sort|uniq -c|sort -rn|head -n20
+  {
+    LANG= ss -nat | awk 'NR > 1 && /TIME-WAIT/ {print $5}' \
+    || LANG= netstat -nat | awk 'NR > 2 && /TIME_WAIT/ {print $5}'
+  } | sort | uniq -c | sort -rn | head -n 20
 }
 
 # top20 of Find SYN connection
 function syn20() {
-    netstat -an | grep SYN | awk '{print $5}' | awk -F: '{print $1}' | sort | uniq -c | sort -nr|head -n20
+  {
+    LANG= ss -an | awk '/SYN/ {print $5}' \
+    || LANG= netstat -an | awk '/SYN/ {print $5}'
+  } | awk -F: '{print $1}' | sort | uniq -c | sort -nr | head -n20
 }
 
 # Printing process according to the port number
 function port_pro() {
-    netstat -ntlp | grep "${1:-.}" | awk '{print $7}' | cut -d/ -f1
+  LANG= ss -ntlp | awk "NR > 1 && /:${1:-}/ {print \$6}" | sed 's/.*pid=\([^,]*\).*/\1/' \
+  || LANG= netstat -ntlp | awk "NR > 2 && /:${1:-}/ {print \$7}" | cut -d/ -f1
 }
 
 # top10 of gain access to the ip address
@@ -107,14 +125,14 @@ function accessip10() {
 
 # top20 of Most Visited file or page
 function visitpage20() {
-    awk '{print $11}' "$(retlog)"|sort|uniq -c|sort -nr|head -n 20
+  awk '{print $11}' "$(retlog)" | sort | uniq -c | sort -nr | head -n 20
 }
 
 # top100 of Page lists the most time-consuming (more than 60 seconds) as well as the corresponding page number of occurrences
 function consume100() {
-    awk '($NF > 60 && $7~/\.php/){print $7}' "$(retlog)" |sort -n|uniq -c|sort -nr|head -n 100
+  awk '($NF > 60 && $7~/\.php/){print $7}' "$(retlog)" | sort -n | uniq -c | sort -nr | head -n 100
   # if django website or other website make by no suffix language
-    # awk '{print $7}' "$(retlog)" |sort -n|uniq -c|sort -nr|head -n 100
+  # awk '{print $7}' "$(retlog)" | sort -n | uniq -c | sort -nr | head -n 100
 }
 
 # Website traffic statistics (G)
@@ -124,7 +142,7 @@ function webtraffic() {
 
 # Statistical connections 404
 function c404() {
-    awk '($9 ~/404/)' "$(retlog)" | awk '{print $9,$7}' | sort
+  awk '($9 ~ /404/)' "$(retlog)" | awk '{print $9,$7}' | sort
 }
 
 # Statistical http status.
@@ -165,5 +183,5 @@ function clrz() {
 
 # Second concurrent
 function 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
+  awk '{if($9~/200|30|404/)COUNT[$4]++}END{for( a in COUNT) print a,COUNT[a]}' "$(retlog)" | sort -k 2 -nr | head -n10
 }