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vim-ale/vps-addswap/install.sh

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#!/bin/sh
set -e
set -u
__init_vps_addswap() {
default_size=2G
my_size=${1:-$default_size}
if [ "$(id -u)" -ne 0 ]; then
echo Usage:
# shellcheck disable=2016
echo ' sudo env PATH="$PATH" vps-addswap' "$my_size"
exit 1
fi
if [ -f "/var/swapfile" ]; then
swapoff /var/swapfile
fi
# Allocate a swapfile
fallocate -l "$my_size" /var/swapfile
# Only allow root to read it
# (this is not sufficient security for sensitive data)
chmod 0600 /var/swapfile
# Activate the swap
mkswap /var/swapfile
swapon /var/swapfile
# Cause swap to be activated on boot
echo '/var/swapfile none swap sw 0 0' | tee -a /etc/fstab
}
__init_vps_addswap "$@"