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Top Forums Shell Programming and Scripting Unable to check if my command succeeded Post 302962068 by rangarasan on Tuesday 8th of December 2015 02:23:19 AM
Old 12-08-2015
In bash, pipefail option will do the trick.

Set the pipefail option in top of your bash script.

Code:
set -o pipefail

-Ranga
 

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socklog-check(8)					      System Manager's Manual						  socklog-check(8)

NAME
socklog-check - checks for the availability of a socklog(8) service. SYNOPSIS
socklog-check [-v] [unix [address]] DESCRIPTION
socklog-check attempts to connect to a socklog(8) unix service and reports whether the connection attempt succeeded or not. It connects to the datagram oriented unix domain socket address, and reports success through the return code. If address is not specified, socklog-check attempts to connect to /dev/log. When running services that use the syslog facility under runit's service supervision, socklog-check should be added to the top of the ser- vice's run script to ensure that no syslog messages are generated until a syslog service is up and running to process the messages, e.g.: #!/bin/sh socklog-check || exit 1 exec service_using_syslog OPTIONS
-v verbose. Print verbose message to standard error. EXIT CODES
On success socklog-check returns 0. On error, socklog-check prints a message to standard error and exits 111. SEE ALSO
socklog(8), socklog-conf(8), svlogd(8), tryto(1), uncat(1), sv(8), runsv(8), runsvdir(8) http://smarden.org/socklog/ http://smarden.org/runit/ AUTHOR
Gerrit Pape <pape@smarden.org> socklog-check(8)
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