On Aug 24, 2025, at 17:01, Collin Funk <[email protected]> wrote:
>
>> 2) needs to be able to exclude or "include only" certain strings in the
>> output using regex patterns. Maybe -v, like egrep has, or -x for "eXclude"
>> (Apple's version doesn't)
>
> The GNU version of 'df' already has the -x option to exclude file system
> types. I can exclude apfs file systems like so (which is all of them on
> this machine):
>
> $ ./src/df -x apfs
> df: no file systems processed
But I don't want to exclude apfs or any specific filesystem type.
I would like to exclude "certain strings in the output using regex patterns"
which in my immediate use case would be to exclude "com.apple.TimeMachine" but
I generalized to regex for possible future situations.
I didn't know that -x was already taken. It isn't valid in Apple's version.
Maybe -s string and -nos string ?
> For other fields I think that 'df | grep -v text' works fine.
No, because 'df' creates the layout and grep doesn't change it. When two or
more filesystems have names like
com.apple.TimeMachine.2025-08-24-205834.local@/dev/disk1s1
the ###-blocks column is about four dozen spaces away from the ones that have
names like /dev/disk1s5
And the size columns for my 4 TB SSD are each ten digits, so that even when I
full-screen the window (151-characters), the mount points have to wrap,
Especially the Time Machine snaphosts which have names like
/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/MBP/2025-08-24-205834/Macintosh
SSD - Data
--
Wes Groleau
伟思礼
“French does have a certain je ne sais quoi, but I don't know what it is.”
— Jeffrey Goldberg
