Issued:

2013-01-07

Updated:

2013-01-07

RHBA-2013:0052 - tcsh617 bug fix update

Synopsis

tcsh617 bug fix update

Type/Severity

Bug Fix Advisory (none)

Topic

Updated tcsh617 package that fixes three bugs is now available for Red Hat Enterprise Linux 5.

Description

The tcsh617 package is a mutually-exclusive replacement for the tcsh package. Tcsh is a command language interpreter compatible with the C shell (csh), which can be used as an interactive login shell, as well as a shell script command processor.

This update fixes the following bugs:

• Prior to this update, the tcsh617 processes were not handling the ".history" file exclusively. Consequently, when running several tcsh617 processes simultaneously, the .history file got malformed. This behavior, apart from corrupting .history content, slowed down the startup of the tcsh617 scripts. With this update, the .history file locking mechanism has been introduced. As a result, the file is merged correctly after modification by several processes. (BZ#648592)

• The tcsh617 package introduced a change in the default value of the $status variable for lists and pipelines. This change was made to provide compatibility with POSIX-compliant shells, like bash, ksh, resh, etc. However, the modification affected existing applications, which relied on previous csh behavior, present for many years. With this update, the $status value has been reverted to the csh default. In addition, the $tcsh_posix_status variable has been added to opt-in the POSIX-like behavior. As a result, compliance with both csh and POSIX is made possible within tcsh617. (BZ#759132)

• Due to a syntax error in the tcsh617 package, the source command failed to function correctly when a single-line if-statement was used. This bug has been fixed and the source command now works properly in the described scenario. (BZ#858281)

All users of tcsh617 are advised to upgrade to this updated package, which fixes 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 https://access.redhat.com/knowledge/articles/11258

Affected Products

Updated Packages

• tcsh617-6.17-7.el5.src.rpm
• tcsh617-6.17-7.el5.x86_64.rpm
• tcsh617-debuginfo-6.17-7.el5.ia64.rpm
• tcsh617-debuginfo-6.17-7.el5.x86_64.rpm
• tcsh617-6.17-7.el5.ia64.rpm
• tcsh617-debuginfo-6.17-7.el5.ppc.rpm
• tcsh617-6.17-7.el5.ppc.rpm
• tcsh617-debuginfo-6.17-7.el5.i386.rpm
• tcsh617-debuginfo-6.17-7.el5.s390x.rpm
• tcsh617-6.17-7.el5.s390x.rpm
• tcsh617-6.17-7.el5.i386.rpm

Fixes

• This content is not included.BZ - 759132
• This content is not included.BZ - 858281

CVEs

(none)

References

(none)

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.