Commands tagged Matrix (7)

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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"

Pick a random line from a file

Change permissions of every directory in current directory
"find . -type d -print0 | xargs -0 chmod 755" thanks masterofdisaster

convert a latex source file (.tex) into opendocument (.odt ) format
require the tex4ht package . You can open the file with openoffice , I use it much for correct my spelling and grammar .

Cleanup a (source) text file, removing trailing spaces/tabs and multiple consecutive blank lines
I used this command (in addition to a code formatting tool) to "cleanup" a bunch of PHP files

Extracting a range of pages from a PDF, using GhostScript
In this example we extract pages 14-17

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

Remove duplicate rows of an un-sorted file based on a single column
$F[0] filters using first word. $F[1] - 2nd, and so on.

Compare a remote file with a local file

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously


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