# Mac OS X

Mar 15th, 2018

## Hidden Utilities

### afplay - Audio File Play

afplay [option…] audio_file

#loop a file
$while :; do afplay "file.mp3"; done; #individually play all file in a directory$ find . -name '*.mp3' -exec afplay '{}' \;


## Free NTFS read and write on Mac

Edit fstab file

sudo nano /etc/fstab


Add below line where DRIVE_NAME is the name of the drive. The drive’s name should contain no spaces, as adding a space to the configuration file would tell your Mac to interpret whatever’s after that space as a separate command. If your DRIVE_NAME is made up of two words separated with a space, for example, “NO NAME”, you have to add a “\” before the space for the system to recognize the space. For example, “NO\ NAME”.

LABEL=DRIVE_NAME none ntfs rw,auto,nobrowse


Instead of using above, we can use the following command line.

UUID=Universal Unique Identifier none ntfs rw


Open Disk Utility and check File System UUID by opening Volume Info. Go back to Disk Utility to Unmount then Mount the NTFS disk to see if it is able to read and write to NTFS Disk.