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Help with new output of "df"

Discussion in 'OS X Mountain Lion (10.8)' started by Supp0rtLinux, Jul 19, 2012.

  1. macrumors member

    I used Geektool extensively and one of my scripts does a "df -h", but excludes a few local volumes so it only shows the main HD and any mounted USB/firewire volumes. I just rolled up to the ML GM and I now when running a "df" I now see columns for "iused", "ifree" and "%iused". You used to have to specify the -i flag to see this. According to the man page, this is now default and the result is that the extra columns are skewing my Geektool layout. I want to exclude them. I know I can do so with awk or cut. However, doing so with either drops the formatting. Example:

    stimpy:~ adavis$ df -h|grep -v devfs|grep -v "map"|grep -v "localhost"|grep -v "Boot OS X"|grep -v "Recovery HD"
    Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
    /dev/disk1 476Gi 195Gi 280Gi 42% 51312849 73422228 41% /
    /dev/disk3s2 186Gi 8.8Mi 186Gi 1% 0 0 100% /Volumes/SHARED
    /dev/disk3s1 410Gi 211Gi 199Gi 52% 55367029 52087612 52% /Volumes/PortableHFS
    /dev/disk5 465Gi 134Gi 331Gi 29% 35208278 86726563 29% /Volumes/Time Machine (Work)
    /dev/disk6s2 400Gi 201Gi 199Gi 51% 52687032 52086588 50% /Volumes/Documents (Encrypted)

    stimpy:~ adavis$ df -h|grep -v devfs|grep -v "map"|grep -v "localhost"|grep -v "Boot OS X"|grep -v "Recovery HD"|awk '{print $1, $2, $3, $4, $5, $9}'
    Filesystem Size Used Avail Capacity Mounted
    /dev/disk1 476Gi 195Gi 280Gi 42% /
    /dev/disk3s2 186Gi 8.8Mi 186Gi 1% /Volumes/SHARED
    /dev/disk3s1 410Gi 211Gi 199Gi 52% /Volumes/PortableHFS
    /dev/disk5 465Gi 134Gi 331Gi 29% /Volumes/Time
    /dev/disk6s2 400Gi 201Gi 199Gi 51% /Volumes/Documents

    … and using cut has similar results...

    Anyone have any clues as to how to strip the inode info off the output of "df" without dropping the formatting of df? I want the output and formatting and all columns except the three "i" columns of inode info.
  2. macrumors newbie

    I just ran into the same issue last night after installing ML, but I am not using GeekTool for the output display - Just in an overnight script.

    I fixed the DF issue by using the below Bash Script, this will output the DF output to a file in your home directory called CutDF.txt which you could monitor this file in GeekTool. Just setup the script to run from CRON on a timed interval.

    -------- Script Start


    TmpDF=$(mktemp /tmp/$(basename $0).$$.XXXXXX) || exit 1

    /bin/df -h | grep -e ^Filesystem > "$TmpDF"

    for (( a=0; a<${#HRDFHold[@]}; a++)); do
    echo "$HRDFLine" > $DisplayCutDF
    unset HRDFHold

    /bin/df -h | grep -e ^/dev/ | sort -k 9 > "$TmpDF"


    for (( a=0; a<${#HRDFHold[@]}; a++)); do
    echo "$HRDFLine" >> $DisplayCutDF
    unset HRDFHold
    rm "$TmpDF"

    --------- Script End

    Attached is the script in TXT file, change extension to .sh and a sample output.

    Hope this helps,


    Attached Files:

  3. macrumors newbie

    Umm... take another look at the output of 'man df'!

    For your convenience, I draw your attention to the bolded bit of a line from the man page:


    BTW, I have this in my .bashrc; I find I never care about /dev, /net or /home.

    df () { /bin/df -Pk $* | grep "Filesystem\|disk\|Volumes"; /bin/df -Phn $* | grep "Filesystem\|disk\|Volumes"; }

    (Come to think of it, perhaps grep --v "dev\|net\|home" would be safer...)
  4. macrumors member

    I did look at 'man df'. The problem is that when you use the -P option, you lose the friendly rounding to the nearest Mb, Gb, Tb, etc and are shown everything in blocks. The goal is to see the df output with the benefits of "-h", but not see the inode info by using "-P". The two don't seem to work together for the desired result. See below:

    gentoo:~ god$ df -h
    Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
    /dev/disk1 476Gi 227Gi 248Gi 48% 59638355 65096722 48% /
    devfs 198Ki 198Ki 0Bi 100% 685 0 100% /dev
    map -hosts 0Bi 0Bi 0Bi 100% 0 0 100% /net
    map auto_home 0Bi 0Bi 0Bi 100% 0 0 100% /home
    localhost:/xxx 476Gi 476Gi 0Bi 100% 0 0 100% /Volumes/MobileBackups
    /dev/disk2s1 410Gi 221Gi 189Gi 54% 57942099 49512542 54% /Volumes/PortableHFS
    /dev/disk2s2 186Gi 27Gi 159Gi 15% 0 0 100% /Volumes/SHARED
    /dev/disk4 465Gi 128Gi 337Gi 28% 33669157 88261588 28% /Volumes/Time Machine (Work)
    /dev/disk5s2 400Gi 211Gi 189Gi 53% 55262102 49511518 53% /Volumes/Documents (Encrypted)
    /dev/disk3s3 128Mi 12Mi 116Mi 10% 3075 29691 9% /Volumes/Boot OS X

    gentoo:~ god$ df -h -P
    Filesystem 512-blocks Used Available Capacity Mounted on
    /dev/disk1 997880632 476594752 520773880 48% /
    devfs 395 395 0 100% /dev
    map -hosts 0 0 0 100% /net
    map auto_home 0 0 0 100% /home
    localhost:/xxx 997880632 997880632 0 100% /Volumes/MobileBackups
    /dev/disk2s1 859637144 463536808 396100336 54% /Volumes/PortableHFS
    /dev/disk2s2 390531008 56718208 333812800 15% /Volumes/SHARED
    /dev/disk4 975445976 269353272 706092704 28% /Volumes/Time Machine (Work)
    /dev/disk5s2 838188976 442096832 396092144 53% /Volumes/Documents (Encrypted)
    /dev/disk3s3 262144 24616 237528 10% /Volumes/Boot OS X

    So perhaps instead of telling us to look at "man df" and pointing out the -P option that you ASSumed we missed, instead you should actually run the command yourself and realize you're just wasting bits with your typing.
  5. macrumors regular

    I probably don't deserve to be in this technical thread, but I played around.

    Does df -Ph work as opposed to df -h -P?
  6. Mal
    macrumors 603


    Works for me.

  7. macrumors member

    Works for me as well. So does "df -P -h". Thanks much. Who knew that switching the order would make the difference. :)
  8. Mal
    macrumors 603


    I'm guessing it sets the flags as it gets to them, overriding any previous ones that are conflicting. So if you set the -h flag first, the -P overrides it with it's default options. When you do it the other way around, -h only overrides the conflicting parts of the -P command, so you get what you're looking for from both.

  9. macrumors newbie

    It seems Supp0rtLinux didn't see the import of this part of my previous post " /bin/df -Phn "

    Supp0rtLinux ASSumed I didn't use the command I obviously use use so often I've written a shell function to make it work better.

    I believe Supp0rtLinux saw the documentation of the -P option and chose not to mention it.;) Others wouldn't be so charitable. :D

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