[Userland-team] [OpenIndiana Distribution - Bug #827] (GNU) df gives multiline output even when piped

illumos project devnull at illumos.org
Sat Sep 10 12:38:39 UTC 2011


Issue #827 has been updated by Ken Mays.

Due date set to 2011-09-14
Assignee changed from OI SFW to OI Userland
Target version set to oi_151_stable
Estimated time set to 8.00
Difficulty set to Medium
Tags set to needs-triage


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Bug #827: (GNU) df gives multiline output even when piped
https://www.illumos.org/issues/827

Author: Jim Klimov
Status: New
Priority: Normal
Assignee: OI Userland
Category: SFW (Solaris Freeware)
Target version: oi_151_stable
Difficulty: Medium
Tags: needs-triage


When 'df' program encounters "long" device or mountpoint names, it makes the terminal output prettier by splitting such lines into two and space-padding the output.

However, and many scripts historically depended on it, 'df' produces a single line per filesystem when piped (to grep, awk or whatever). This works with both Solaris and Linux (GNU?) df variants.

However, the /usr/gnu/bin/df in OI_148a LiveUSB lacks this feature:

root at openindiana:~# df -k /a
Filesystem           1K-blocks      Used Available Use% Mounted on
rpool/ROOT/openindiana
                      16717979   2968243  13749736  18% /a


root at openindiana:~# df -k | grep openindiana
rpool/ROOT/openindiana

This is a bug and should be fixed - it can break an indeterminate number of scripts and programs which rely on parsing the 'df' output.

//Jim Klimov




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