Raspberry Pi SDカード長寿命化+システム状態表示ソフト導入+OSイメージ縮小

sudo swapoff --all
sudo systemctl stop dphys-swapfile
sudo systemctl disable dphys-swapfile

systemctl status dphys-swapfile

sudo nano /etc/fstab

PARTUUID=********-02 / ext4 defaults,noatime,nodiratime 0 1

tmpfs /tmp tmpfs defaults,noatime,nodiratime,mode=1777 0 0
tmpfs /run/user/1000 tmpfs defaults,noatime,nodiratime,mode=1777 0 0
tmpfs /run/dump1090-fa tmpfs defaults,noatime,nodiratime,mode=1777 0 0
tmpfs /run/piaware tmpfs defaults,noatime,nodiratime,mode=1777 0 0
tmpfs /home/pi/.cache/lxsession/LXDE-pi tmpfs defaults,noatime,nodiratime,mode=1777 0 0

sudo reboot

df -h

systemctl list-unit-files -t service|grep enabled

sudo systemctl stop rsyslog.service
sudo systemctl disable rsyslog.service

sudo systemctl stop hciuart.service
sudo systemctl stop bluetooth.service
sudo systemctl disable hciuart.service
sudo systemctl disable bluetooth.service

sudo reboot

systemctl list-unit-files -t service

systemctl list-unit-files -t service|grep disabled

sudo wget -O /sbin/folder2ram https://raw.githubusercontent.com/bobafetthotmail/folder2ram/master/debian_package/sbin/folder2ram
sudo chmod +x /sbin/folder2ram
sudo folder2ram -configure

sudo nano /etc/folder2ram/folder2ram.conf

tmpfs /var/log
tmpfs /var/tmp
tmpfs /var/spool
tmpfs /var/cache/samba

sudo folder2ram -mountall
sudo folder2ram -enablesystemd

sudo reboot

df -h

sudo nano /etc/systemd/journald.conf

Storage=none

sudo reboot

sudo apt-get install zlib1g-dev uuid-dev libmnl-dev gcc make git autoconf autogen automake pkg-config cmake libuv1-dev
git clone https://github.com/firehol/netdata.git --depth=1
cd netdata
sudo ./netdata-installer.sh

sudo apt-get install （パッケージ名）

#!/usr/bin/perl

use utf8;
use 5.010;
use strict;
#use autodie;
use warnings;
#use diagnostics;

my $who = `whoami`;

if ($who !~ /root/)
{
   print "This should be run as root or with the sudo command.\n";
   exit 1;
}

if (!$ARGV[0])
{
   print "No image file given.\n";
   exit 1;
}

my $image = $ARGV[0];

if ($image !~ /^\//)
{
   print "Please enter full path to image file.\n";
   exit 1;
}

if (! -e $image)
{
   print "$image does not exist.\n";
   exit 1;
}

my @name = split (/\//, $image);
print "\n$name[(scalar @name) - 1]:\n";
print "=" x (length ($name[(scalar @name) - 1]) + 1) . "\n";

my $info = `parted -m $image unit B print | grep ext4`;

(my $num, my $start, my $old, my $dummy) = split (':', $info, 4);
chop $start;
chop $old;
printf "Old size - %d MB (%1.2f GB)\n", int ($old / 1048576), ($old / 1073741824);

my $loopback = `losetup -f --show -o $start $image`;
chop $loopback;

`e2fsck -p -f $loopback`;

if ($? != 0)
{
   print "There was an error in the file system that can't be automatically fixed... aborting.\n";
   `losetup -d $loopback`;
   exit 1;
}

$info = `resize2fs -P $loopback 2>&1`;

($dummy, my $size) = split (': ', $info, 2);
chop $size;
$size = $size + 1024;

`sudo resize2fs -p $loopback $size 2>&1`;
sleep 1;
`losetup -d $loopback`;

$size = ($size * 4096) + $start;

`parted $image rm $num`;
`parted -s $image unit B mkpart primary $start $size`;

$size = $size + 58720257;
printf "New size - %d MB (%1.2f GB)\n", int ($size / 1048576), ($size / 1073741824);

`truncate -s $size $image`;

my $diff = $old - $size;
printf "Image file was reduced by %d MB (%1.2f GB)\n", int ($diff / 1048576), ($diff / 1073741824);

exit 0;

sudo apt-get -y install exfat-fuse exfat-utils

sudo fdisk -l

sudo mkdir -p /mnt/hdd/usbmem

sudo mount /dev/sda1 /mnt/hdd/usbmem

df -h

sudo blkid

sudo nano /etc/fstab

UUID="789E-D39F" /mnt/hdd/usbmem exfat-fuse async,auto,dev,exec,gid=65534,rw,uid=65534,umask=000 0 0

sudo reboot

df -h

cd /mnt/hdd/usbmem
sudo perl ./resizeimage.pl /mnt/hdd/usbmem/200406.img

sudo umount /mnt/hdd/usbmem

sudo raspi-config