Commands by trivoallan (3)

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about how using internal separate field and store file content on variable

Make all GUI stuff show up on the display connected to the computer (when you're logged in via SSH)
If you have multiple displays or monitors the DISPLAY environment variable will tell X where to send the output. This is very handy for setting up a mediacenter at home. You can plugin the computer to the TV and then ssh to the computer and set the DISPLAY as above, then run your program and it will show up on the TV.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

cp the file
Copy the file with the given .extension at the source file's location. Eliminates the typing of long paths again and again.

View files opened by a program on startup and shutdown
Run this before you run a command in order to see what the command does as it starts. The -c flag is useful here as the PID is unknown before startup. All config files, libraries, logs, ports, etc used by the command as it starts up, (and shuts down) will be captured at 1s intervals and written to a file. Useful for debugging etc.

Stat each file in a directory
Possible simplification of egrep-awk-sort with find and -exec with xargs.

generate 30 x 30 matrix
Replaces hexdump with the more succint xxd, and the sed was unnecessarily complex.

modify a file in place with perl
changes THIS to THAT in all files matching fileglob* without using secondary files

Jump to a directory, execute a command and jump back to current dir

Find broken symlinks and delete them


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