Public bug reported:
In a non-interactive bash session, redirecting the standard output to the file
read by the pipeline's first command leads to random resuts : the redirection
sometimes works, but generally the file is overwriten by an empty file.
In an interactive session, the redirection works, which leads the user to look
somewhere else to find a bug.
However, when the last command is a user-writen function which simulates
"cat", the resulting file is correct, as in an interactive session.
Bash documentation does not prohibit such processing.
Arbiel
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: bash 4.3-7ubuntu1.5
ProcVersionSignature: Ubuntu 3.13.0-106.153-generic 3.13.11-ckt39
Uname: Linux 3.13.0-106-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Dec 12 23:51:22 2017
InstallationDate: Installed on 2014-05-30 (1292 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
LANGUAGE=fr_FR
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: bash
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: bash (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
** Attachment added: "error-report"
https://bugs.launchpad.net/bugs/1737846/+attachment/5021868/+files/error-report
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https://bugs.launchpad.net/bugs/1737846
Title:
bash fails to redirect standard output of a pipeline to the input file
of the fist pipeline's command
Status in bash package in Ubuntu:
New
Bug description:
In a non-interactive bash session, redirecting the standard output to the
file read by the pipeline's first command leads to random resuts : the
redirection sometimes works, but generally the file is overwriten by an empty
file.
In an interactive session, the redirection works, which leads the user to
look somewhere else to find a bug.
However, when the last command is a user-writen function which
simulates "cat", the resulting file is correct, as in an interactive
session.
Bash documentation does not prohibit such processing.
Arbiel
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: bash 4.3-7ubuntu1.5
ProcVersionSignature: Ubuntu 3.13.0-106.153-generic 3.13.11-ckt39
Uname: Linux 3.13.0-106-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Dec 12 23:51:22 2017
InstallationDate: Installed on 2014-05-30 (1292 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
LANGUAGE=fr_FR
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: bash
UpgradeStatus: No upgrade log present (probably fresh install)
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