Merging new cheatsheets into kragniz's work.

cheatsheets/asterisk

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+To connect to a running Asterisk session:
+asterisk -rvvv
+
+To issue a command to Asterisk from the shell:
+asterisk -rx "<command>"
+
+To originate an echo call from a SIP trunk on an Asterisk server, to a specified number:
+asterisk -rx "channel originate SIP/<trunk>/<number> application echo"
+
+To print out the details of SIP accounts:
+asterisk -rx "sip show peers"
+
+To print out the passwords of SIP accounts:
+asterisk -rx "sip show users"
+
+To print out the current active channels:
+asterisk -rx "core show channels"

cheatsheets/nmap

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+Single target scan:
+nmap [target]
+
+Scan from a list of targets:
+nmap -iL [list.txt]
+
+iPv6:
+nmap -6 [target]
+
+OS detection:
+nmap -O [target]
+
+Save output to text file:
+nmap -oN [output.txt] [target]
+
+Save output to xml file:
+nmap -oX [output.xml] [target]
+
+Scan a specific port:
+nmap -source-port [port] [target]
+
+Do an aggressive scan:
+nmap -A [target]
+
+Traceroute:
+nmap -traceroute [target]
+
+Ping scan only: -sP
+Don't ping:     -PN
+TCP SYN ping:   -PS
+TCP ACK ping:   -PA
+UDP ping:       -PU
+ARP ping:       -PR

cheatsheets/scp

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+To copy a file from your local machine to a remote server:
+scp foo.txt user@example.com:remote/dir
+
+To copy a file from a remote server to your local machine:
+scp user@example.com:remote/dir/foo.txt local/dir