Linux-Daily-Tricks

Tips - Linux daily Tricks

These are some tips and tricks I usually need in my daily work, so I tried to document them here.

Table of Tricks

• Tips - Linux daily Tricks

• Table of Tricks

  • To delete file content in vi

  • To search for Something

  • To get OS info you are using:

  • To know Which Shell you Use

  • To get OS version

  • To identify root dir

  • tmux Use mouse to scroll

  • To Update Nvidia Driver

  • Packages Management Related

  • VPN - To enable openconnect in Network Settings

To delete file content in vi

# Enter the script
vi <script-name>

# to get to the first line in the file.
gg 

# to enter visualize mode.
v 

# to select all.
G 

# delete.
dd 

To search for Something

find / -name <target-dir-to-find> 2>/dev/null

To get OS info you are using:

uname -a

To know Which Shell you Use

echo $0

To get OS version

cat /etc/os-release

To identify root dir

findmnt / -o source -n

tmux Use mouse to scroll

# To use your mouse in this mode (called copy mode) press ^b + : and enter following:

setw -g mouse on

Reference: Scroll shell output with mouse in tmux. https://superuser.com/a/217269

To Update Nvidia Driver

dpkg -l | grep nvidia

sudo apt-get --purge remove nvidia*

sudo apt-get --purge remove "*nvidia*"

sudo apt autoremove

sudo apt autoclean

sudo reboot

• Then use the default linux nvidia driver supported.

Packages Management Related

• Search for package dependencies

  dnf repoquery --requires <packag-ename>
  

• Search for specific package source

  yum provides <package>
  # e.g
  yum provides ld-linux.so.2
  

• Search for packages that requires certain

  # For Red Hat/Fedora
  dnf repoquery --whatrequires gcc
  # or
  yum deplist gcc | grep dependent
  
  # For Debian/Ubuntu based systems
  sudo apt-get install apt-rdepends
  dnf repoquery --whatrequires gcc
  

VPN - To enable openconnect in Network Settings

• Objective: Wants to connect to VPN in settings, but openconnect does not shows it there.

• To enable openconnect in Linux Network settings.

  sudo apt install openconnect
  sudo apt install network-manager-openconnect network-manager-openconnect-gnome
  sudo systemctl restart NetworkManager