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notes:ubuntu_tips [2020/02/11 14:02] – [Resize JPG in nautilus] adminnotes:ubuntu_tips [2026/10/25 19:30] (current) – external edit 127.0.0.1
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 ====== Ubuntu tips ====== ====== Ubuntu tips ======
 +===== 20.04 post-install steps =====
 +  * 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 ===== ===== 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. \\ 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. \\
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 AutomaticLogin=userid AutomaticLogin=userid
 ... ...
 +</code>
 +===== Convert JPG to PDF =====
 +<code>
 +$ img2pdf image.jpg > image.pdf
 </code> </code>
 ===== Resize JPG ===== ===== Resize JPG =====
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