SSD Tweaks shell script

Discussion in 'Mac Programming' started by Dalton63841, Feb 4, 2013.

  1. Dalton63841 macrumors 65816


    Nov 27, 2010
    Here's the deal... I am working on a package to handle setting up my SSD + HDD configuration. Instead of building a Fusion Drive, I am opting for just mounting /Users on the HDD. Along with that I will be moving the sleepimage, swapfiles, and /tmp over to the HDD.

    The MAIN reason I build this is so that I can set it up manually once, and then if I need to reinstall the OS in the future, I can just install, enable root and log in, install this app, and be right back to where I left off. Anywho, I haven't actually done much shell scripting in several months, and was hoping someone could double-check my postinstall script.

    UUID="$( diskutil info /dev/disk1s2 | sed -nE 's/.*Volume UUID: +([-A-F0-9]+).*/\1/p' )" # get UUID from HDD /Users partition
    mv /Users /UsersOld											# changes /Users directory to prevent deletion
    diskutil unmount ${UUID}
    touch /etc/fstab
    cp /etc/fstab /etc/fstab.orig								# backup original fstab
    echo "UUID=${UUID} /Users hfs auto" >> /etc/fstab			# add UUID and mount point to fstab
    diskutil mount "/dev/disk1s2"								# mount new HDD-based /Users
    diskutil enableOwnership /Users
    rmdir /UsersOld												# delete old Users directory
    cp /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/UsersFolderIcon.icns /Users/.VolumeIcon.icns	# gives back proper icon for /Users folder
    rm -rf /Users/.vm/											# remove sleep/swap files from previous install
    pmset -a hibernatefile /Users/.vm
    rm -rf /private/var/vm/sleep*
    rm -rf /private/var/vm/swapfile*										#Move sleepfile, swapfiles, and tmp files
    rm -rf /private/tmp
    ln -s /Users/.tmp /private/tmp
    exit 0
    Also, right now this script gets the UUID for disk1s2, which is where the HDD main partition will USUALLY be. If there is a better, more bullet-proof way to ensure it gets the UUID for the proper partition, that would be great.

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