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.TH "memory_usage_alert" "1" "January 2023" "memory_usage_alert" ""
.hy
.SH NAME
.PP
memory_usage_alert - Checks available memory and sends out notification
via mail.
Configuration is done in environment files.
.PD 0
.P
.PD
It\[cq]s part of \f[B]system-helpers\f[R].
.SH SYNOPSIS
.PP
\f[B]memory_usage_alert\f[R] [CONFIG_FILE (absolute path)]
.SH DESCRIPTION
.PP
\f[B]memory_usage_alert\f[R] checks available memory and sends out a
mail if certain limits are reached.
It comes with systemd services.
.PP
If no \f[I]CONFIG_FILE\f[R] is provided, \f[B]memory_usage_alert\f[R]
tries to read from \f[I]$HOME/.memory_usage_alert.conf\f[R] and
\f[I]/etc/memory_usage_alert.conf\f[R] for configuration.
It will exit with a non-zero exit code if it cannot find an proper
configuration file.
.PP
The following are at least required for the script to work:
.PD 0
.P
.PD
- \f[B]MEMORY_USAGE_ALERT_MAIL_ADDRESS=\[lq]\[lq]\f[R] which requires
\f[I]mail.rc\f[R] to be configured and `\f[I]mailx\f[R]' command has be
available.
.PD 0
.P
.PD
.PP
The following are optional or have reasonable defaults: -
\f[B]MEMORY_USAGE_ALERT_THRESHOLD=512\f[R] threshold to warn about (in
\f[I]megabytes\f[R])
.PP
You can copy this script to \f[I]/usr/local/bin\f[R] and use create a
custom \f[B]CONFIG_FILE\f[R] as user.
.SH EXAMPLE
.PP
Create a \f[I]$HOME/.memory_usage_alert.conf\f[R] and add
\f[I]MEMORY_USAGE_ALERT_MAIL_ADDRESS=\[lq]alias\[at]domain.tld\[rq]\f[R].
Notifications will be delivered to alias\[at]domain.tld.
Examples can be found in \f[I]/usr/share/doc/memory_usage_alert\f[R].
.SH EXIT VALUES
.TP
\f[B]0\f[R]
Success
.TP
\f[B]1\f[R]
Error
.SH AUTHORS
Alexander Sch\[:a]ferdiek.