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Full Discussion: redirected output not going to file for all cases
Top Forums UNIX for Dummies Questions & Answers redirected output not going to file for all cases Post 302139116 by brdholman on Thursday 4th of October 2007 09:52:04 AM
Old 10-04-2007
This works for all my normal executions. But on one machine, a coredump is expected on one command. We don't care, just need to confirm the version info. This is output from the exe:

$ ./Up


-*-*- XXXXXXX UPDATE XXXXX Version nnnnnnnn -*-*-
-*-*- Copyright (C) 1998-2007 xxxxxxxxxxxxxx, Inc. -*-*-

Processing begins: 10/4/2007 10:48:12

Tracking Database Connect Error
Memory fault(coredump)

However, when I send the output to a file, the output file is empty:

$ ./Up > ../Up_output.txt 2>&1
Memory fault(coredump)
$ cd ..
$ cat Up_output.txt
$
 

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LEARN ABOUT MOJAVE

systemd-sysctl.service

SYSTEMD-SYSCTL.SERVICE(8)                                     systemd-sysctl.service                                     SYSTEMD-SYSCTL.SERVICE(8)

NAME

       systemd-sysctl.service, systemd-sysctl - Configure kernel parameters at boot

SYNOPSIS

       /lib/systemd/systemd-sysctl [OPTIONS...] [CONFIGFILE...]

       systemd-sysctl.service

DESCRIPTION

       systemd-sysctl.service is an early boot service that configures sysctl(8) kernel parameters by invoking /lib/systemd/systemd-sysctl.

       When invoked with no arguments, /lib/systemd/systemd-sysctl applies all directives from configuration files listed in sysctl.d(5). If one
       or more filenames are passed on the command line, only the directives in these files are applied.

       In addition, --prefix= option may be used to limit which sysctl settings are applied.

       See sysctl.d(5) for information about the configuration of sysctl settings. After sysctl configuration is changed on disk, it must be
       written to the files in /proc/sys before it takes effect. It is possible to update specific settings, or simply to reload all
       configuration, see Examples below.

OPTIONS

       --prefix=
           Only apply rules with the specified prefix.

       -h, --help
           Print a short help text and exit.

       --version
           Print a short version string and exit.

EXAMPLES

       Example 1. Reset all sysctl settings

           systemctl restart systemd-sysctl

       Example 2. View coredump handler configuration

           # sysctl kernel.core_pattern
           kernel.core_pattern = |/libexec/abrt-hook-ccpp %s %c %p %u %g %t %P %I

       Example 3. Update coredump handler configuration

           # /lib/systemd/systemd-sysctl --prefix kernel.core_pattern

       This searches all the directories listed in sysctl.d(5) for configuration files and writes /proc/sys/kernel/core_pattern.

       Example 4. Update coredump handler configuration according to a specific file

           # /lib/systemd/systemd-sysctl 50-coredump.conf

       This applies all the settings found in 50-coredump.conf. Either /etc/sysctl.d/50-coredump.conf, or /run/sysctl.d/50-coredump.conf, or
       /usr/lib/sysctl.d/50-coredump.conf will be used, in the order of preference.

       See sysctl(8) for various ways to directly apply sysctl settings.

SEE ALSO

       systemd(1), sysctl.d(5), sysctl(8),

systemd 237                                                                                                              SYSTEMD-SYSCTL.SERVICE(8)
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