Commands tagged custom (1)

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most used unix commands

Remove text from file1 which is in file2 and stores it in an other file
This command compares file2 with file1 and removes the lines that are in file1 from file2. Handy if you have a file where file1 was the origional and you want to remove the origional data from your file2.

Display top 5 processes consuming CPU

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"

Draw kernel module dependancy graph.
parse `lsmod' output and pass to `dot' drawing utility then finally pass it to an image viewer

Echo the contents of a Url
Directly send the content of a url to standard out. This command is most convenient for sending the output of a download directly to another command.

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

Let your computer lull you to sleep
Can change language and speed, see espeak man page for options. (Install espeak in your linux distro via yum or apt-get) For insomniacs you may need to enclose in a while true; do ...; done loop ;)

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"

remote-pbzip2 and transfer a directory to local file


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