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Top Forums UNIX for Beginners Questions & Answers Shell script to check a command executed sucessfully or not Post 303043554 by sravani25 on Friday 31st of January 2020 11:20:34 AM
Old 01-31-2020
Hi rbatte1 and Rudi,


Thanks for the reply.

My intention is when ever I run the below command, if the output is successful then I want to print successful output need to ignore if the command output is not successfull.
Code:
$i -classpath $loc4 org.apache.catalina.util.ServerInfo

But I tried to redirect the output but still getting error messages.
Code:
Error: Could not find or load main class org.apache.catalina.util.ServerInfo
{"'tomcat'":"'Server version: Apache Tomcat/9.0.30 Server built: Dec 7 2019 16:42:04 UTC Server number: 9.0.30.0 OS Name: Linux OS Version: 3.10.0-1062.9.1.el7.x86_64 Architecture: amd64 JVM Version: 1.8.0_171-b11 JVM Vendor: Oracle Corporation'"}


Moderator's Comments:
Mod Comment
Please wrap all code, files, input & output/errors in CODE tags.
It makes them easier to read and preserves spacing for indenting or fixed-width data.

Last edited by rbatte1; 02-06-2020 at 06:19 AM..
 

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APACHECTL(8)							     apachectl							      APACHECTL(8)

NAME
apachectl - Apache HTTP Server Control Interface SYNOPSIS
When acting in pass-through mode, apachectl can take all the arguments available for the httpd binary. apachectl [ httpd-argument ] When acting in SysV init mode, apachectl takes simple, one-word commands, defined below. apachectl command SUMMARY
apachectl is a front end to the Apache HyperText Transfer Protocol (HTTP) server. It is designed to help the administrator control the functioning of the Apache httpd daemon. The apachectl script can operate in two modes. First, it can act as a simple front-end to the httpd command that simply sets any necessary environment variables and then invokes httpd, passing through any command line arguments. Second, apachectl can act as a SysV init script, taking simple one-word arguments like start, restart, and stop, and translating them into appropriate signals to httpd. If your Apache installation uses non-standard paths, you will need to edit the apachectl script to set the appropriate paths to the httpd binary. You can also specify any necessary httpd command line arguments. See the comments in the script for details. The apachectl script returns a 0 exit value on success, and >0 if an error occurs. For more details, view the comments in the script. OPTIONS
Only the SysV init-style options are defined here. Other arguments are defined on the httpd manual page. start Loads the org.apache.httpd launchd job. stop, graceful-stop Unloads the org.apache.httpd launchd job. restart, graceful Unloads, then loads the org.apache.httpd launchd job. fullstatus Displays a full status report from mod_status. For this to work, you need to have mod_status enabled on your server and a text-based browser such as lynx available on your system. The URL used to access the status report can be set by editing the STATUSURL variable in the script. status Displays a brief status report. Similar to the fullstatus option, except that the list of requests currently being served is omit- ted. configtest Run a configuration file syntax test. It parses the configuration files and either reports Syntax Ok or detailed information about the particular syntax error. This is equivalent to apachectl -t. The following option was available in earlier versions but has been removed. startssl To start httpd with SSL support, you should edit your configuration file to include the relevant directives and then use the normal apachectl start. Apache HTTP Server 2018-07-06 APACHECTL(8)
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