Commands by jackworner099 (0)

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Find 'foo' string inside files

Show this month's calendar, with today's date highlighted
Explanation: * The date command evaluated to today's date with blank padded on the left if single digit * The grep command search and highlight today's date * The --before-context and --after-context flags displays up to 6 lines before and after the line containing today's date; thus completes the calendar. I have tested this command on Mac OS X Leopard and Xubuntu 8.10

Recursively remove .svn directories from a local repository

To get you started!
Do it.

Printout a list of field numbers (awk index) from a CSV file with headers as first line.
Useful to identify the field number in big CSV files with large number of fields. The index is the reference to use in processing with commands like 'cut' or 'awk' involved.

Generate random valid mac addresses
Doubt it actually generates valid mac addresses but this version doesn't need any external commands so it runs much faster. Much shorter as well.

Take a file as input (two columns data format) and sum values on the 2nd column for all lines that have the same value in 1st column
Example: $ cat

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"

list all file extensions in a directory
Just a little simplification.

Recursively chmod all dirs to 755 and all files to 644


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