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2020-01-31T14:05:59Z

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=== Grub ===
* sudo vi /etc/default/grub
* GRUB_CMDLINE_LINUX="" -> GRUB_CMDLINE_LINUX="text"
* sudo update-grub
* sudo systemctl set-default multi-user.target, and you can revert it later by -> sudo systemctl set-default graphical.target
== reference ==
* [http://www.comptechdoc.org/os/linux/commands/linux_crfilest.html File system of linux]

== Swap ==
Use swap file
touch /swap-file
mkswap /swap-file
swapon /swap-file
swapon -s
Write the file on boot
/swap-file swap swap defaults 0 0

== Common Install ==
* Network
apt-get install curl privoxy curl
* Disk
apt-get install gparted
* input method
apt-get install fcitx fcitx-pinyin #remember to set according fcitx diagnose
* Editor
sudo apt-get install snapd snapd-xdg-open
sudo snap install notepad-plus-plus
* Interpreter
sudo apt-get install python

== Update ==
=== Kernel ===
Update to the latest kernel
* sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

== System Configue ==

=== Linux System Configure File ===
{| class="wikitable sortable"
|-
! Header text !! Header text !! Note
|-
| cat /var/log/kern.log || kernal log || -
|-
| cat /proc/cpuinfo || cpu info || -
|-
| /etc/hosts || hosts file ||
|-
| nano /etc/passwd || edit users ||
* test:x:503:503::/home/test:/bin/bash
* set the user: login name, password, ID, groupID, comment paragraph, main directory, shell, etc
|-
| nano /etc/group || edit groups ||
* debian-transmission:x:117:root,pi
* user root and pi are in group debian-transmission
|}

=== Set Path ===
Example for root
* .bashrc file locate in ~/.bashrc
* list by command ls -al
* Set path in ~/.bashrc, or ~/.bash_profile
Export for HTTP, HTTPS, FTP
export http_proxy="http://127.0.0.1:8118"
export https_proxy="http://127.0.0.1:8118"
export ftp_proxy="127.0.0.1:8118"
For ESP
export PATH=$PATH:$HOME/esp/xtensa-esp32-elf/bin
Test
* echo $PATH: output: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/he/esp/xtensa-esp32-elf/bin
* verify: xtensa-esp32-elf-gcc -v

Alias
* Or use alias: alias get_esp32="export PATH=$PATH:$HOME/esp/xtensa-esp32-elf/bin"

=== Set System Auto Start ===
# ’‘’init.d‘’‘ directory names within directory put the startup script for each service, such as sshd, httpd etc.
# ‘’‘rcX.d’‘’ directory name, followed by the X stands for each run level. Each service within the directory has links to the startup script file in the init.d, according to the file name link to the start-up state. K said they did not start at the beginning of the service, S starts showing links rc.local file to start the service, referring to the /etc/rc.d/
# ’‘’rc.local‘’‘ After the system is initialized and services are ready, the final execution of a script, you can put some simple scripts which
* Methods '''/etc/rc.d/rc.local or /etc/rc.local'''
* Methods [[update-rc.d]]: this can run it as service, '''/etc/init.d/'''

=== Disk Operation ===
{| class="wikitable sortable"
|-
! Main !! Header text !! Header text
|-
| check available disk || fdisk -l || Example
|-
| check disk and also mounted on || df -h || Example
|-
| list the mounted disk || lsblk || Example
|-
| list usb disck || lsusb ||
|-
| mount disk ||
* mount -t ntfs /dev/sda1 /mnt/
* mount -t auto /dev/sda1 /media/SSK
||
|}
=== Mount Disk ===
* Install ntfs-3g format: apt-get install ntfs-3g
* Error cause ((device sda1): load_system_files(): $LogFile is not clean. Mounting read-only. Mount in Windows.)
* mount on start, first run: sudo blkid
you will see
/dev/mmcblk0p1: SEC_TYPE="msdos" LABEL="boot" UUID="15CD-3B79" TYPE="vfat"
/dev/mmcblk0p2: UUID="13d368bf-6dbf-4751-8ba1-88bed06bef77" TYPE="ext4"
/dev/sda1: LABEL="SSK" UUID="C494B1E694B1DADE" TYPE="ntfs"
* edit fstab: sudo nano /etc/fstab
* insert the ntfs type: UUID=DA9C8D0E9C8CE5FB /media/disk ntfs gid=root, uid=root, dmask=002, fmask=113 0 0
* which means <file system> <location> <type> <gid?> <uid?> <dmask to directories> <fmask applies to files> <?> <?>

* you have to format it to ext3 or ext4 format firstly, use commoand mkfs.ext3
* change group and write permission that is the same process above
* operation not permitted

=== MISC ===
{| class="wikitable sortable"
|-
! Set !! Command !! -
|-
| Hosts DNS || /etc/hosts for DNS || -
|-
| hostname || /etc/hostname || -
|-
| Alias || nano ~/.bashrc || -
|-
| Run on daemon ||
* nohup python main.py &
* check -> ps ax | grep test.py
||

|}
=== Set password for Ubuntu or Lubuntu ===
* sudo passwd -> enter current password, and enter new password for root
* su root -> use the passwod just set can login, can now set

[[category: Linux]]

Category:Linux Config - Revision history

Chao: /* Swap */