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

[illumos project]

Issue #827 has been updated by Ken Mays.

Status changed from New to Resolved

file/gnu-coreutils at 8.5,5.11-0.151.1:20110910T035245Z

kmays ~ (alasdair2.uk): df --version
df (GNU coreutils) 8.5
...

kmays ~ (spiritworld): df -k |grep spirit
data/zones/spirited/ROOT/zbe-1
data/zones/spirited/ROOT/dc
data/zones/spirited/ROOT/projects
data/zones/spirited/ROOT/projects/build_trees
data/zones/spirited/ROOT/projects/build_trees/oi-oi_151a
data/zones/spirited/ROOT/projects/sustaining
data/zones/spirited/ROOT/projects/sustaining/oi_151a
data/zones/spirited/ROOT/repos
data/zones/spirited/ROOT/rpool
data/share/us/spiritworld/ga/homes
----------------------------------------
Bug #827: (GNU) df gives multiline output even when piped
https://www.illumos.org/issues/827

Author: Jim Klimov
Status: Resolved
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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