Commands by kulor (4)

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Disable the ping response
It really disables all ICMP responses not only the ping one. If you want to enable it you can use: $ sudo -s "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all"

Shows the torrent file name along with the trackers url
Replace * with any filename matching glob or an individual filename

get a directory from one machine to another using tar and ssh

Create an SSH tunnel for accessing your remote MySQL database with a local port

Remove all files but one starting with a letter(s)
Remove everything in current directory except files starting with "ca".

Read aloud a text file in Ubuntu (and other Unixes with espeak installed

Trace and view network traffic
Trace and view network traffic. I made this far too complicated.. now fixed, thanks zolden.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Use a var with more text only if it exists
See "Parameter Expansion" in the bash manpage. They refer to this as "Use Alternate Value", but we're including the var in the at alternative.


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