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https://github.com/YunoHost-Apps/mastodon_ynh.git
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73 lines
2 KiB
Text
73 lines
2 KiB
Text
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#!/bin/bash
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# Check the amount of available RAM
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#
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# usage: ynh_check_ram [--required=RAM required in Mb] [--no_swap|--only_swap] [--free_ram]
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# | arg: -r, --required= - Amount of RAM required in Mb. The helper will return 0 is there's enough RAM, or 1 otherwise.
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# If --required isn't set, the helper will print the amount of RAM, in Mb.
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# | arg: -s, --no_swap - Ignore swap
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# | arg: -o, --only_swap - Ignore real RAM, consider only swap.
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# | arg: -f, --free_ram - Count only free RAM, not the total amount of RAM available.
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ynh_check_ram () {
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# Declare an array to define the options of this helper.
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declare -Ar args_array=( [r]=required= [s]=no_swap [o]=only_swap [f]=free_ram )
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local required
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local no_swap
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local only_swap
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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required=${required:-}
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no_swap=${no_swap:-0}
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only_swap=${only_swap:-0}
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local total_ram=$(vmstat --stats --unit M | grep "total memory" | awk '{print $1}')
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local total_swap=$(vmstat --stats --unit M | grep "total swap" | awk '{print $1}')
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local total_ram_swap=$(( total_ram + total_swap ))
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local free_ram=$(vmstat --stats --unit M | grep "free memory" | awk '{print $1}')
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local free_swap=$(vmstat --stats --unit M | grep "free swap" | awk '{print $1}')
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local free_ram_swap=$(( free_ram + free_swap ))
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# Use the total amount of ram
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local ram=$total_ram_swap
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if [ $free_ram -eq 1 ]
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then
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# Use the total amount of free ram
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ram=$free_ram_swap
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if [ $no_swap -eq 1 ]
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then
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# Use only the amount of free ram
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ram=$free_ram
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elif [ $only_swap -eq 1 ]
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then
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# Use only the amount of free swap
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ram=$free_swap
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fi
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else
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if [ $no_swap -eq 1 ]
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then
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# Use only the amount of free ram
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ram=$total_ram
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elif [ $only_swap -eq 1 ]
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then
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# Use only the amount of free swap
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ram=$total_swap
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fi
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fi
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if [ -n "$required" ]
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then
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# Return 1 if the amount of ram isn't enough.
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if [ $ram -lt $required ]
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then
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return 1
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else
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return 0
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fi
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# If no RAM is required, return the amount of available ram.
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else
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echo $ram
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fi
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}
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