Add cheatsheets

cheatsheets/lsof

@@ -1,3 +1,6 @@
+# List all ipv4 network files
+sudo lsof -i4
+
 # To find listening ports:
 lsof -Pnl +M -i4
 

cheatsheets/netstat

@@ -9,3 +9,5 @@ netstat -pln | grep <port> | awk '{print $NF}'
 
 Example output: 1507/python
 
+# Fast display of ipv4 tcp listening programs
+sudo netstat -vtlnp --listening -4

cheatsheets/nmap

@@ -31,3 +31,6 @@ nmap -traceroute [target]
 # TCP ACK ping:   -PA
 # UDP ping:       -PU
 # ARP ping:       -PR
+
+# Example: Ping scan all machines on a class C network
+nmap -sP 192.168.0.0/24

cheatsheets/pdftk

@@ -1,6 +1,9 @@
 # Concatenate all pdf files into one:
 pdftk *.pdf cat output all.pdf
 
+# Concatenate specific pdf files into one:
+pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf
+
 # Concatenate pages 1 to 5 of first.pdf with page 3 of second.pdf
 pdftk A=fist.pdf B=second.pdf cat A1-5 B3 output new.pdf
 

cheatsheets/ps

@@ -1,8 +1,11 @@
 # To list every process on the system:
 ps aux
 
+# To list a process tree
+ps axjf
+
 # To list every process owned by foouser:
 ps -aufoouser
 
 # To list every process with a user-defined format:
-ps -eo pid,user,command
+ps -eo pid,user,command

cheatsheets/sam2p

@@ -0,0 +1,2 @@
+# Concatenate all pdf files into one:
+sam2p *.pdf out.pdf