Commands by saeed20 (0)

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Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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

I finally found out how to use notify-send with at or cron
You can write a script that does this : $remind []

Comparison between the execution output of the last and penultimate command
Useful for checking if there are differences between last and penultimate command.

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"

Show sorted list of files with sizes more than 1MB in the current dir

port forwarding
pem file used by AWS servers for additional security

Quick notepad
Quick write some notes to a file with cat. Ctrl+C when you have finish.

shuffle lines via bash
Using perl in a one-liner is a bit overkill to randomly sort some input. `sort` from coreutils should be enough.

move you up one directory quickly
In bash, this turns on auto cd. If a command is just a directory name, it cd's into that directory.

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