Commands tagged goto (5)

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a find and replace within text-based files
using find's exec option instead of a for loop and using sed's -i option for inplace replacement. no need to do the file swap.

Hiding and Show files on Mac OS X
These commands will mark a file as hidden or visible to Mac OS X Finder. Notice the capitol V vs the lowercase v. This will also work for directories. setfile -a V foo.bar; // This marks the file invisible setfile -a v foo.bar; // This marks the file visible I have also found that adding the following aliases are helpful: alias hide='setfile -a V' alias show='setfile -a v'

Regenerate the /etc/mtab file

Monitor a file with tail with timestamps added
Should be a bit more portable since echo -e/n and date's -Ins are not.

Updates your no-ip.org account with curl

Calculate the distance between two geographic coordinates points (latitude longitude)
The Haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Generate a random password
Another password maker, for human-unfriendly passwords. '-base64' output will make sure it it can be typed on a keyboard, though the output string length will always be a multiple of 4.

Record a webcam output into a video file.
The option -an disables audio recording, -f forces the use of video4linux for the input, -s sets the video to the size 320x240, -b sets the recording bitrate, -r sets the frame rate to 15fps, -i gives the input device, -vcodec sets the output format. Press Q to stop recording or you can specify the recording time with the -t option like -t 00:1:30

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.


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