Public bug reported:
$ ss -atn | head -n 5 | tr ' ' '_'
State__Recv-Q_Send-Q___________Local_Address:Port_____________Peer_Address:Port_Process_________________________________________________________________________
LISTEN_0______4096_____________127.0.0.53%lo:53____________________0.0.0.0:*____________________________________________________________________________________
LISTEN_0______224__________________127.0.0.1:5430__________________0.0.0.0:*____________________________________________________________________________________
LISTEN_0______128____________________0.0.0.0:22____________________0.0.0.0:*____________________________________________________________________________________
LISTEN_0______5____________________127.0.0.1:631___________________0.0.0.0:*____________________________________________________________________________________
These trailing spaces cause problems when piping ss output through grep
or anything else unless the terminal window is very wide. The spaces are
present even when stdout is a terminal, indeed if I maximize my terminal
window (its width becomes a very reasonable 172 characters) and run ss
without arguments, the output is interleaved with blank lines. env -i
changes nothing.
The spaces should be trimmed before output regardless of whether stdout
is a terminal.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: iproute2 5.5.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed Jul 22 14:05:53 2020
SourcePackage: iproute2
UpgradeStatus: Upgraded to focal on 2020-04-26 (86 days ago)
** Affects: iproute2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1888494
Title:
ss outputs lots of trailing spaces
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