davidalger · February 2, 2024 09:17 · Apr 7, 2020 · Apr 7, 2020 · Apr 6, 2020 · Apr 6, 2020
diff --git a/sysadmin-shortcuts.md b/sysadmin-shortcuts.md
@@ -58,8 +58,7 @@
 ### Monitor number of connections in a TIME_WAIT state
 
     watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
-
-    watch -n0.25 'ss -na state established sport = :3306 or sport = :6379 or sport = :6380 or sport = :6381 | awk '\''{print $(NF-1)" "$(NF)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -nr'
+    watch -d -n1 'ss -na state established sport = :3306 or sport = :6379 or sport = :6380 or sport = :6381 | awk '\''{print $(NF-1)" "$(NF)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -nr'
 
 ### Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
 

diff --git a/sysadmin-shortcuts.md b/sysadmin-shortcuts.md
@@ -1,73 +1,74 @@
-
-## list listening ports
+### list listening ports
 
     sudo lsof -nP -iTCP -sTCP:LISTEN
     sudo netstat -plunt
 
-# flush DNS on Mojave
+### flush DNS on Mojave
 
     sudo killall -HUP mDNSResponder
 
-# immediately sleep displays
+### immediately sleep displays
 
     pmset displaysleepnow
 
-# monitor redis utilization
+### monitor redis utilization
 
     redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 
-# redis sentinel (find active master)
+### redis sentinel (find active master)
 
     redis-cli -h redis-node -p 26379 info sentinel | grep name=obj | head -n1 | tr , $'\n' | grep address | cut -d= -f2 | sed 's/:/ -p /'
 
-# human readable memory info
+### human readable memory info
 
     cat /proc/meminfo | grep Mem | awk '{print $1" "$2/1024/1024" GB"}'
 
-# sort uniq nginx errors
+### sort uniq nginx errors
 
     zgrep '2016/11/30'  /var/log/nginx/*error.log* \
       | perl -p -e 's/^(.*?):.*(\[[a-z]+\]) [0-9]+#[0-9]+:(?: \*[0-9]+)? (.*?,|.*?) (?:client: [0-9\.]+, )?(.*)$/$1 $2 $3 $4/' \
       | perl -p -e 's/, (?:referrer|host|request): "[^"\n]+"//g' | perl -p -e 's/client_temp\/[0-9]+/client_temp\/<tmp_number>/' \
       |  sort | uniq -c | sort -n | less
 
-# sort nginx log files by date
+### sort nginx log files by date
 
     cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
 
-# enumerate ssl ciphers
+### enumerate ssl ciphers
 
     nmap --script ssl-enum-ciphers -p 443 <hostname>
 
-# http memory
+### http memory
 
     ps aux | grep 'http' | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'
 
-# show memory usage for php-fpm by user
+### show memory usage for php-fpm by user
 
     ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
 
-# show average memory usage for php-fpm by user
+### show average memory usage for php-fpm by user
 
     ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'
 
-# show size of installed RAM
+### show size of installed RAM
 
     dmidecode -t 17 | grep Size | awk '{s+=$2} END {print s/1024 " GB"}'
     ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\''{s+=$2} END {print s/1024 " GB"}'\'''
 
-# Monitor number of connections in a TIME_WAIT state
+### Monitor number of connections in a TIME_WAIT state
 
     watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
+
+    watch -n0.25 'ss -na state established sport = :3306 or sport = :6379 or sport = :6380 or sport = :6381 | awk '\''{print $(NF-1)" "$(NF)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -nr'
 
-# Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
+### Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
 
 https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
 
     Host *
         IPQoS=throughput
 
-# Cleanup nearly full /boot partition
+### Cleanup nearly full /boot partition
 
 https://unix.stackexchange.com/a/105029/46493
 

diff --git a/sysadmin-shortcuts.md b/sysadmin-shortcuts.md
@@ -62,12 +62,14 @@
 
 # Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
 
-* https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
+https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
 
     Host *
         IPQoS=throughput
 
-# Cleanup nearly full /boot partition; ref: https://unix.stackexchange.com/a/105029/46493
+# Cleanup nearly full /boot partition
+
+https://unix.stackexchange.com/a/105029/46493
 
     yum install yum-utils
     package-cleanup --oldkernels --count=2
diff --git a/sysadmin-shortcuts.md b/sysadmin-shortcuts.md
@@ -62,7 +62,7 @@
 
 # Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
 
-https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
+* https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
 
     Host *
         IPQoS=throughput

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -1,57 +0,0 @@
-
-# list listening ports
-sudo lsof -nP -iTCP -sTCP:LISTEN
-sudo netstat -plunt
-
-# flush DNS on Mojave
-sudo killall -HUP mDNSResponder
-
-# immediately sleep displays
-pmset displaysleepnow
-
-# monitor redis utilization
-redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
-
-# redis sentinel (find active master)
-redis-cli -h redis-node -p 26379 info sentinel | grep name=obj | head -n1 | tr , $'\n' | grep address | cut -d= -f2 | sed 's/:/ -p /'
-
-# human readable memory info
-cat /proc/meminfo | grep Mem | awk '{print $1" "$2/1024/1024" GB"}'
-
-# sort uniq nginx errors
-zgrep '2016/11/30'  /var/log/nginx/*error.log* \
-  | perl -p -e 's/^(.*?):.*(\[[a-z]+\]) [0-9]+#[0-9]+:(?: \*[0-9]+)? (.*?,|.*?) (?:client: [0-9\.]+, )?(.*)$/$1 $2 $3 $4/' \
-  | perl -p -e 's/, (?:referrer|host|request): "[^"\n]+"//g' | perl -p -e 's/client_temp\/[0-9]+/client_temp\/<tmp_number>/' \
-  |  sort | uniq -c | sort -n | less
-
-# sort nginx log files by date
-cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
-
-# enumerate ssl ciphers
-nmap --script ssl-enum-ciphers -p 443 <hostname>
-
-# http memory
-ps aux | grep 'http' | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'
-
-# show memory usage for php-fpm by user
-ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
-
-# show average memory usage for php-fpm by user
-ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'
-
-# show size of installed RAM
-dmidecode -t 17 | grep Size | awk '{s+=$2} END {print s/1024 " GB"}'
-ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\''{s+=$2} END {print s/1024 " GB"}'\'''
-
-# Monitor number of connections in a TIME_WAIT state
-watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
-
-# Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
-https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
-
-Host *
-    IPQoS=throughput
-
-# Cleanup nearly full /boot partition; ref: https://unix.stackexchange.com/a/105029/46493
-yum install yum-utils
-package-cleanup --oldkernels --count=2

diff --git a/sysadmin-shortcuts.md b/sysadmin-shortcuts.md
@@ -0,0 +1,73 @@
+
+## list listening ports
+
+    sudo lsof -nP -iTCP -sTCP:LISTEN
+    sudo netstat -plunt
+
+# flush DNS on Mojave
+
+    sudo killall -HUP mDNSResponder
+
+# immediately sleep displays
+
+    pmset displaysleepnow
+
+# monitor redis utilization
+
+    redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
+
+# redis sentinel (find active master)
+
+    redis-cli -h redis-node -p 26379 info sentinel | grep name=obj | head -n1 | tr , $'\n' | grep address | cut -d= -f2 | sed 's/:/ -p /'
+
+# human readable memory info
+
+    cat /proc/meminfo | grep Mem | awk '{print $1" "$2/1024/1024" GB"}'
+
+# sort uniq nginx errors
+
+    zgrep '2016/11/30'  /var/log/nginx/*error.log* \
+      | perl -p -e 's/^(.*?):.*(\[[a-z]+\]) [0-9]+#[0-9]+:(?: \*[0-9]+)? (.*?,|.*?) (?:client: [0-9\.]+, )?(.*)$/$1 $2 $3 $4/' \
+      | perl -p -e 's/, (?:referrer|host|request): "[^"\n]+"//g' | perl -p -e 's/client_temp\/[0-9]+/client_temp\/<tmp_number>/' \
+      |  sort | uniq -c | sort -n | less
+
+# sort nginx log files by date
+
+    cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
+
+# enumerate ssl ciphers
+
+    nmap --script ssl-enum-ciphers -p 443 <hostname>
+
+# http memory
+
+    ps aux | grep 'http' | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'
+
+# show memory usage for php-fpm by user
+
+    ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
+
+# show average memory usage for php-fpm by user
+
+    ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'
+
+# show size of installed RAM
+
+    dmidecode -t 17 | grep Size | awk '{s+=$2} END {print s/1024 " GB"}'
+    ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\''{s+=$2} END {print s/1024 " GB"}'\'''
+
+# Monitor number of connections in a TIME_WAIT state
+
+    watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
+
+# Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
+
+https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
+
+    Host *
+        IPQoS=throughput
+
+# Cleanup nearly full /boot partition; ref: https://unix.stackexchange.com/a/105029/46493
+
+    yum install yum-utils
+    package-cleanup --oldkernels --count=2
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -12,6 +12,9 @@ pmset displaysleepnow
 # monitor redis utilization
 redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 
+# redis sentinel (find active master)
+redis-cli -h redis-node -p 26379 info sentinel | grep name=obj | head -n1 | tr , $'\n' | grep address | cut -d= -f2 | sed 's/:/ -p /'
+
 # human readable memory info
 cat /proc/meminfo | grep Mem | awk '{print $1" "$2/1024/1024" GB"}'
 

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -1,6 +1,6 @@
 
-# list listening ports (on macOS followed by command for Linux)
-sudo lsof -i -n -P | grep LISTEN
+# list listening ports
+sudo lsof -nP -iTCP -sTCP:LISTEN
 sudo netstat -plunt
 
 # flush DNS on Mojave

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -49,3 +49,6 @@ https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-
 Host *
     IPQoS=throughput
 
+# Cleanup nearly full /boot partition; ref: https://unix.stackexchange.com/a/105029/46493
+yum install yum-utils
+package-cleanup --oldkernels --count=2
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -6,6 +6,9 @@ sudo netstat -plunt
 # flush DNS on Mojave
 sudo killall -HUP mDNSResponder
 
+# immediately sleep displays
+pmset displaysleepnow
+
 # monitor redis utilization
 redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -3,6 +3,9 @@
 sudo lsof -i -n -P | grep LISTEN
 sudo netstat -plunt
 
+# flush DNS on Mojave
+sudo killall -HUP mDNSResponder
+
 # monitor redis utilization
 redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -36,3 +36,10 @@ ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\'
 
 # Monitor number of connections in a TIME_WAIT state
 watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
+
+# Add following bit to ~/.ssh/config on Fedora 29 when running in VMWare
+https://superuser.com/questions/1371506/from-vmware-and-fedora-29-ssh-to-remote-machine-cause-broken-pipe
+
+Host *
+    IPQoS=throughput
+
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -21,6 +21,9 @@ cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
 # enumerate ssl ciphers
 nmap --script ssl-enum-ciphers -p 443 <hostname>
 
+# http memory
+ps aux | grep 'http' | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'
+
 # show memory usage for php-fpm by user
 ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
 

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -1,4 +1,8 @@
 
+# list listening ports (on macOS followed by command for Linux)
+sudo lsof -i -n -P | grep LISTEN
+sudo netstat -plunt
+
 # monitor redis utilization
 redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -26,3 +26,6 @@ ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { prin
 # show size of installed RAM
 dmidecode -t 17 | grep Size | awk '{s+=$2} END {print s/1024 " GB"}'
 ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\''{s+=$2} END {print s/1024 " GB"}'\'''
+
+# Monitor number of connections in a TIME_WAIT state
+watch -d -n1 'ss -na state time-wait dport = :3306 or dport = :6379 or dport = :6380 or dport = :6381 | awk '\''{print $(NF)" "$(NF-1)}'\'' | sed '\''s/:[^ ]*$//g'\'' | sort | uniq -c | sort -n'
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -22,3 +22,7 @@ ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | a
 
 # show average memory usage for php-fpm by user
 ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'
+
+# show size of installed RAM
+dmidecode -t 17 | grep Size | awk '{s+=$2} END {print s/1024 " GB"}'
+ansible -i inventory-* all -b -m shell -a 'dmidecode -t 17 | grep Size | awk '\''{s+=$2} END {print s/1024 " GB"}'\'''
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -17,5 +17,8 @@ cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
 # enumerate ssl ciphers
 nmap --script ssl-enum-ciphers -p 443 <hostname>
 
-# show memory usage by process (source: http://php.ingewikkeld.net/entry/human-readable-memory-usage-in-linux-per-process)
-ps -eo size,pid,user,command --sort -size | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
+# show memory usage for php-fpm by user
+ps --no-headers -o size,pid,user,command --sort -size -C php-fpm -U www-prod | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
+
+# show average memory usage for php-fpm by user
+ps --no-headers -o size,cmd -C php-fpm -U www-prod | awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -16,3 +16,6 @@ cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
 
 # enumerate ssl ciphers
 nmap --script ssl-enum-ciphers -p 443 <hostname>
+
+# show memory usage by process (source: http://php.ingewikkeld.net/entry/human-readable-memory-usage-in-linux-per-process)
+ps -eo size,pid,user,command --sort -size | awk '{ hr=$1/1024 ; printf("%13.2f Mb %s ",hr,$2) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }'
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -3,7 +3,7 @@
 redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 
 # human readable memory info
-cat /proc/meminfo | grep MemTotal | awk '{print $2/1024/1024 " GB"}'
+cat /proc/meminfo | grep Mem | awk '{print $1" "$2/1024/1024" GB"}'
 
 # sort uniq nginx errors
 zgrep '2016/11/30'  /var/log/nginx/*error.log* \

diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -13,3 +13,6 @@ zgrep '2016/11/30'  /var/log/nginx/*error.log* \
 
 # sort nginx log files by date
 cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
+
+# enumerate ssl ciphers
+nmap --script ssl-enum-ciphers -p 443 <hostname>
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -10,3 +10,6 @@ zgrep '2016/11/30'  /var/log/nginx/*error.log* \
   | perl -p -e 's/^(.*?):.*(\[[a-z]+\]) [0-9]+#[0-9]+:(?: \*[0-9]+)? (.*?,|.*?) (?:client: [0-9\.]+, )?(.*)$/$1 $2 $3 $4/' \
   | perl -p -e 's/, (?:referrer|host|request): "[^"\n]+"//g' | perl -p -e 's/client_temp\/[0-9]+/client_temp\/<tmp_number>/' \
   |  sort | uniq -c | sort -n | less
+
+# sort nginx log files by date
+cat access-log.txt | cut -d: -f2- | sort -t ' ' -k 4.9,4.12n -k 4.5,4.7M
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -4,3 +4,9 @@ redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
 
 # human readable memory info
 cat /proc/meminfo | grep MemTotal | awk '{print $2/1024/1024 " GB"}'
+
+# sort uniq nginx errors
+zgrep '2016/11/30'  /var/log/nginx/*error.log* \
+  | perl -p -e 's/^(.*?):.*(\[[a-z]+\]) [0-9]+#[0-9]+:(?: \*[0-9]+)? (.*?,|.*?) (?:client: [0-9\.]+, )?(.*)$/$1 $2 $3 $4/' \
+  | perl -p -e 's/, (?:referrer|host|request): "[^"\n]+"//g' | perl -p -e 's/client_temp\/[0-9]+/client_temp\/<tmp_number>/' \
+  |  sort | uniq -c | sort -n | less
diff --git a/sysadmin-shortcuts b/sysadmin-shortcuts
@@ -0,0 +1,6 @@
+
+# monitor redis utilization
+redis-cli -p 6381 info | grep -E '(memory.*human|keyspace|total)'
+
+# human readable memory info
+cat /proc/meminfo | grep MemTotal | awk '{print $2/1024/1024 " GB"}'