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Top Forums Shell Programming and Scripting How find lines, export sum into file? Post 303045679 by nimafire on Wednesday 8th of April 2020 07:46:28 AM
Old 04-08-2020
Quote:
Originally Posted by RudiC
That's because with common shells (e.g. bash) variables defined / created in a subshell (the while loop) are not handed back to the parent shell.


Try also
Code:
echo $(( $(grep "Virus" file | grep -o "[^ ]*$" | tr '\n' '+') 0 ))
15

logically echo $TOTAL must print correct number,
 
Test Your Knowledge in Computers #434
Difficulty: Medium
jQuery is a vanilla JavaScript library designed to simplify DOM-oriented client-side HTML scripting along with offering cross-browser compatibility.
True or False?

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cmannotifyd(8)						     CMAN Notification Daemon						    cmannotifyd(8)

NAME
cmannotifyd - CMAN Notification Daemon SYNOPSIS
cmannotifyd [-f] [-d] DESCRIPTION
The cmannotifyd daemon talks to CMAN and provides a mechanism to notify external entities about cluster changes. CMAN dispatches 3 kind of notifications: - CMAN_REASON_TRY_SHUTDOWN when cman requests to all clients if it is allowed to shutdown. - CMAN_REASON_STATECHANGE when cman detects a node joining or leaving the cluster. - CMAN_REASON_CONFIG_UPDATE when a configuration change event has been detected/requested. These notifications are then dispatched to the shell script cman_notify in the environment variable CMAN_NOTIFICATION. cman_notify will then execute all the scripts in the configured notification directory (default: /etc/cluster/cman-notify.d) passing a very minimal set of envvars including, of course, the CMAN_NOTIFICATION= type. The execution order is set by the filename as shown by "LC_ALL=C ls -las". cmannotifyd logs are stored in the default log file (/var/log/cluster/cmannotifyd.log). cman_notify logs are stored in the default log file (/var/log/cluster/cman_notify.log). By default the output from the scripts executed by cman_notify is redirected to /dev/null. Users can either set CMAN_NOTIFICATION_DEBUG=1 in their environment or set proper debug configura- tion in cluster.conf to redirect scripts output to the cman_notify log file. NOTES
cmannotifyd does not block on cman_notify nor check the exit status of the script. Notifications are dispatched in the same order as they arrive, one by one. CMAN_REASON_TRY_SHUTDOWN is passed to scripts for information only, they can not influence cman's decsion about whether or not to shut down. CMAN_REASON_STATECHANGE also implies CMAN_NOTIFICATION_QUORUM exported in the environment. CMAN_NOTIFICATION_QUORUM will be set to 1 (when the node is part of a quorate cluster) or 0 (otherwise). A template for cman_notify scripts can be found in the doc/ directory. OPTIONS
-f Run in the foreground (do not fork / daemonize). -d Enable debug output. November 2008 cmannotifyd(8)

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