Arch-Linux-personal-collection

Personal collection of Arch Linux tweaks for my eeepc 1011px taken everywhere (ArchWiki and web in general ...)

Mount /tmp /var/log and /var/tmp in RAM and move Chromium/Chrome Cache in tmpfs (Less wear and tear on Hd and tmp faster on ram)

• sudo nano /etc/fstab
• add this at the end of the file:

/var/log  /var/log   tmpfs  defaults,noatime,nodiratime,mode=0755  0 0
/var/tmp  /var/tmp   tmpfs  defaults,noatime,nodiratime,mode=1777  0 0
/tmp      /tmp       tmpfs  defaults,size=600m  0 0
tmpfs   /home/<USER>/.cache     tmpfs   noatime,nodev,nosuid,size=400M  0       0

<USER>= your username

Tweak swappiness

• Create 99-sysctl.conf

sudo nano /etc/sysctl.d/99-sysctl.conf

• Add the following content:

vm.swappiness=10 
vm.vfs_cache_pressure=50

Disable ipv6 for faster browsing

• Create a file called 40-ipv6.conf inside /etc/sysctl.d

sudo nano /etc/sysctl.d/40-ipv6.conf

• Add the following content:

# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1 
net.ipv6.conf.interface0.disable_ipv6 = 1
...
net.ipv6.conf.interfaceN.disable_ipv6 = 1

Use different dns (e.g. the Google ones)

• sudo nano /etc/resolv.conf

and replace nameserver with the new ones (dns1 and dns2 respectively)

# Generated by resolvconf
nameserver 8.8.8.8
nameserver 8.8.4.4

Reduce grub timeout

• sudo nano /etc/default/grub

and reduce this value from 5 to a lower number (e.g. 2)

GRUB_TIMEOUT=2

Get fewer ttys with systemd

• sudo nano /etc/systemd/logind.conf

uncomment and reduce this value (e.g I'm using 3)

NAutoVTs=3

Profile sync daemon (Reduced wear to physical drives)

• yaourt -S profile-sync-daemon

• sudo nano /etc/psd.conf

• Uncomment and add your username to this line

USERS="<USER>"

• Uncomment and add the browser You're using to this line in this way

BROWSERS="chromium opera midori"

• sudo systemctl enable psd.service

Optimize sqlite databas in Google Chrome

• First: Close Google Chrome

• cd ~/.config/google-chrome/Default

• And give the following commands

http://pastebin.com/Czptsduk

prelink

• yaourt -S prelink

• prelink -amR

• Daily cron job:

. Create the folder cron.daily inside inside /etc

sudo mkdir /etc/cron.daily

. Create prelink file

sudo nano /etc/cron.daily/prelink

with the following content:

#!/bin/bash
[[ -x /usr/bin/prelink ]] && /usr/bin/prelink -amR &>/dev/null

. and give ownership permissions

sudo chmod 755 /etc/cron.daily/prelink

preload

• yaourt -S preload

• sudo systemctl enable preload.service

laptop-mode-tools to increase battery life

• yaourt -S laptop-mode-tools

• sudo systemctl enable laptop-mode.service

• sudo nano /etc/laptop-mode/laptop-mode.conf and enable laptop mode on battery

ENABLE_LAPTOP_MODE_ON_BATTERY=1

powertop to increase battery life

• yaourt -S powertop

• powertop --calibrate

• powertop on boot

. Create a file caller powertop.service

/etc/systemd/system/powertop.service

. add the following content:

[Unit]
Description=Powertop tunings

[Service]
Type=oneshot
ExecStart=/usr/bin/powertop --auto-tune

[Install]
WantedBy=multi-user.target

• Start the service

sudo systemctl enable powertop.service

Useful terminal commands

• Get the number of installed packages

pacman -Q|wc -l

• Generate a list of installed packages

pacman -Qe

Colorize bash prompt

• nano ~/bashrc and add the following

PS1='[\e[0;36m]\u[\e[m] [\e[1;33m]\w[\e[m] [\e[1;36m]$[\e[m] [\e[$

36m, 33m are the main colors. You can change as You wish. the list of colors is available here: https://wiki.archlinux.org/index.php/Color_Bash_Prompt

• You can add a message like in screenshot by adding the following line at the end of the bashrc (Credits: dea1993)

echo -e "Welcome to ArchLinux $(tput sgr0)" $(uname -r)

• You can do the same for root user: sudo nano /root/.bashrc

and add the following:

echo -e "$(tput setaf 1)ATTENZIONE ENRICO:$(tput setaf 2) Sei Root: $(tput sgr0)" $(uname -r)