Issued:
2012-05-23
Updated:
2012-05-23

RHBA-2012:0687 - tcsh bug fix update

Synopsis

tcsh bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated tcsh packages that fix two bugs are now available for Red Hat Enterprise Linux 6.

Description

The tcsh packages contain an enhanced and compatible version of the C shell (csh), which is a command language interpreter, and can be used as an interactive login shell, as well as a shell script command processor.

This update fixes the following bugs:

  • When using multiple shells simultaneously, the command history is saved from all shells in one ".history" file. Previously, when running multiple csh scripts at the same time, lines in the ".history" file could be reordered with different timestamps or some of the entries could disappear, rendering the ".history" file corrupted. As a consequence, start-up scripts could be slowed down. This update implements file locking mechanism that uses shared readers and an exclusive writer to prevent the ".history" file from being corrupted. (BZ#791232)

  • Previously, the "anyerror" variable could be selected to set the tcsh exit value behavior. However, "anyerror" is a shell variable and therefore was not propagated to subshells, and could not globally affect csh scripts. This update modifies the tcsh exit value behavior to the default behavior of csh: the new "tcsh_posix_status" variable is now available instead of "anyerror" to allow behavior similar to the POSIX standard. (BZ#798652)

All users of tcsh are advised to upgrade to these updated packages, which fix these bugs.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • tcsh-6.17-19.el6_2.ppc64.rpm
  • tcsh-debuginfo-6.17-19.el6_2.s390x.rpm
  • tcsh-6.17-19.el6_2.i686.rpm
  • tcsh-debuginfo-6.17-19.el6_2.ppc64.rpm
  • tcsh-6.17-19.el6_2.src.rpm
  • tcsh-debuginfo-6.17-19.el6_2.i686.rpm
  • tcsh-debuginfo-6.17-19.el6_2.x86_64.rpm
  • tcsh-6.17-19.el6_2.s390x.rpm
  • tcsh-6.17-19.el6_2.x86_64.rpm

Fixes

CVEs

(none)

References

(none)

Additional information