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notes:ubuntu_tips [2013/01/31 18:40] admin created |
notes:ubuntu_tips [2021/04/17 10:53] (current) admin [Allow users with UID < 1000 appear on login screen] |
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| ====== Ubuntu tips ====== | ====== Ubuntu tips ====== | ||
| - | ===== Allow users with UID<1000 appear on login screen ===== | + | ===== 20.04 post-install steps ===== |
| - | By default users with UID lesser than 1000 do not appear on graphical login screen. That can be changed in **/etc/login.defs** file by customizing **UID_MIN**, **GID_MIN** settings. | + | * install VBox guest additions |
| + | <code> | ||
| + | # apt install gcc make perl | ||
| + | # /media/hanys/VBox_GAs_6.1.18/VBoxLinuxAdditions.run | ||
| + | # reboot | ||
| + | </code> | ||
| + | * install and configure additional software | ||
| + | <code> | ||
| + | # apt install net-tools openssh-server vim tmux mc autofs | ||
| + | # vim /etc/idmapd.conf Configure nfs4 domain | ||
| + | # vim /etc/auto.master Uncomment /net/ line | ||
| + | # service autofs restart | ||
| + | </code> | ||
| + | * create dxxx user account (plus related groups) and set up the account | ||
| + | <code> | ||
| + | # groupadd -g 501 dxx | ||
| + | # groupadd -g 508 gr_share | ||
| + | # useradd -c "J..." -g dxxx -G adm,cdrom,dialout,sudo,dip,plugdev,lpadmin,lxd,sambashare,vboxsf,gr_share \ | ||
| + | -m -s /bin/bash -u 501 dxxx | ||
| + | # passwd dxxx | ||
| + | </code> | ||
| + | * copy dxxx's config from the server | ||
| + | <code> | ||
| + | $ scp -r .ssh <vb-ubuntu>:~/ | ||
| + | $ scp -r .tmux <vb-ubuntu>:~/ | ||
| + | $ scp .tmux.conf .bash_aliases <vb-ubuntu>:~/ | ||
| + | </code> | ||
| + | * configure dxxx's account | ||
| + | <code> | ||
| + | $ cd ~ | ||
| + | $ mv Documents/ Documents.local | ||
| + | $ ln -s /net/192.168.1.2/data/smb/users/dambi/Documents | ||
| + | $ ln -s /net/192.168.1.2/data/smb/users/dambi/projects | ||
| + | </code> | ||
| + | ===== Allow users with UID < 1000 appear on login screen ===== | ||
| + | By default users with UID lesser than 1000 do not appear on graphical login screen. That can be changed in **/etc/login.defs** file by customizing **UID_MIN**, **GID_MIN** settings. \\ | ||
| + | \\ | ||
| + | //Note: Does not seem to work on 18.04.// | ||
| + | ===== Enable auto login for user with UID < 1000 on 18.04 ===== | ||
| + | <code> | ||
| + | $ sudo vim /etc/gdm3/custom.conf | ||
| + | ... | ||
| + | # Enabling automatic login | ||
| + | AutomaticLoginEnable=true | ||
| + | AutomaticLogin=userid | ||
| + | ... | ||
| + | </code> | ||
| + | ===== Convert JPG to PDF ===== | ||
| + | <code> | ||
| + | $ img2pdf image.jpg > image.pdf | ||
| + | </code> | ||
| + | ===== Resize JPG ===== | ||
| + | ==== in nautilus ==== | ||
| + | Install necessary packages and restart nautilus... | ||
| + | <code> | ||
| + | $ sudo apt install imagemagick | ||
| + | $ sudo apt install nautilus-image-converter | ||
| + | $ nautilus -q | ||
| + | </code> | ||
| + | Resize image via right mouse click... | ||
| + | ==== CLIs ==== | ||
| + | <code> | ||
| + | $ man mogrify | ||
| + | $ man convert | ||
| + | </code> | ||
