Commands using sed (1,319)

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determine if tcp port is open
for udp nmap -sU -p 80 hostname

Find files with size over 100MB and output with better lay-out

list files recursively by size

list block devices
Shows all block devices in a tree with descruptions of what they are.

Perform sed substitution on all but the last line of input
In this simple example the command will add a comma to the end of every line except the last. I found this really useful when programatically constructing sql scripts. See sample output for example.

Burn an ISO on the command line.

list block devices
Shows all block devices in a tree with descruptions of what they are.

Have netcat listening on your ports and use telnet to test connection
This will start a netcat process listening on port 666. If you are able connect to your your server, netcat will receive the data being sent and spit it out to the screen (it may look like random garbage, so you might want to redirect it to a file).

Install pip with Proxy
Installs pip packages defining a proxy

Equivalent to ifconfig -a in HPUX


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