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Xiaorui-Huang/new_user.sh

Last active April 29, 2025 15:50
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Setup Files
Raw
new_user.sh
#!/bin/bash
# Prompt the user for a new username
read -p "Please enter a new username: " NEW_USER
# Exit the script if no username is provided
if [[ -z "$NEW_USER" ]]; then
echo "No username provided. Exiting."
exit 1
fi
# Confirm the username
echo "You entered the username: $NEW_USER"
read -p "Is this correct? [Y/n]: " CONFIRMATION
# Check if the user confirmed the username, or if the input is empty (default to yes)
while [[ "$CONFIRMATION" != "" && "$CONFIRMATION" != "y" && "$CONFIRMATION" != "Y" && "$CONFIRMATION" != "n" && "$CONFIRMATION" != "N" ]]; do
echo "Invalid input. Please enter 'y' (yes), 'n' (no) or just press enter to confirm."
read -p "Is this correct? [[y]/n]: " CONFIRMATION
done
if [[ "$CONFIRMATION" == "n" || "$CONFIRMATION" == "N" ]]; then
echo "Username not confirmed. Exiting."
exit 1
fi
# Create the user
useradd -m -G sudo -s /bin/bash "$NEW_USER"
passwd "$NEW_USER"
# Update the WSL configuration
tee /etc/wsl.conf <<_EOF
[user]
default=${NEW_USER}
_EOF
echo 'Now terminate wsl for new user to take effect `wsl --terminate`'
Raw
pdf_utils.sh
# sudo apt install ghostscript pdftk
# util functions
pdfcompress() {
if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
echo "Usage: pdfcompress <input_pdf> [compression_quality]"
echo "Compression qualities: low, med, high, max"
return 1
fi
local infile="$1"
local compression_quality="$2"
local base_filename=$(basename "$infile")
local home_compressed="${HOME}/${base_filename%.pdf}_compressed.pdf"
local home_infile="${HOME}/${base_filename}"
# Copy the original PDF to the home directory
cp "$infile" "$home_infile"
# Determine compression setting based on the given quality
case "$compression_quality" in
low)
local quality_setting="/screen"
;;
med)
local quality_setting="/ebook"
;;
high)
local quality_setting="/printer"
;;
max)
local quality_setting="/prepress"
;;
*)
local quality_setting="/prepress" # default to max
;;
esac
# Run Ghostscript on the PDF in the home directory
gs -q -dNOPAUSE -dBATCH \
-sDEVICE=pdfwrite \
-dCompatibilityLevel=1.4 \
-dPDFSETTINGS="$quality_setting" \
-dEmbedAllFonts=true \
-dSubsetFonts=true \
-dDownsampleColorImages=true \
-dColorImageDownsampleType=/Bicubic \
-dColorImageResolution=300 \
-dDownsampleGrayImages=true \
-dGrayImageDownsampleType=/Bicubic \
-dGrayImageResolution=300 \
-dDownsampleMonoImages=true \
-dMonoImageDownsampleType=/Bicubic \
-dMonoImageResolution=300 \
-sOutputFile="$home_compressed" "$home_infile"
# Copy the compressed file back to the current working directory
cp "$home_compressed" "./${base_filename%.pdf}_compressed.pdf"
# Delete the original and compressed PDFs in the home directory
rm "$home_infile"
rm "$home_compressed"
}
splitpdf() {
local parts="$1"
local input_file="$2"
# Get the total number of pages in the PDF
local total_pages=$(pdftk "$input_file" dump_data | grep "NumberOfPages" | awk '{print $2}')
echo "Pages: $total_pages"
# Calculate the number of pages in each part
local pages_per_part=$((total_pages / parts))
local remaining_pages=$((total_pages % parts))
local start_page=1
for (( i=1; i<=parts; i++ )); do
local end_page=$((start_page + pages_per_part - 1))
# Distribute the remaining pages among the parts
if (( remaining_pages > 0 )); then
end_page=$((end_page + 1))
remaining_pages=$((remaining_pages - 1))
fi
local output_file="${input_file%.pdf}_part${i}.pdf"
pdftk "$input_file" cat "$start_page-$end_page" output "$output_file"
echo "Created $output_file"
start_page=$((end_page + 1))
done
}
Raw
setup-linux.sh
#!/usr/bin/env bash
# for set usage refer to this https://gist.github.com/vncsna/64825d5609c146e80de8b1fd623011ca
set -ex
# get sudo and update default packages
sudo apt update
sudo apt upgrade -y
sudo apt install build-essential -y
sudo apt remove nano -y
# for wsl only
sudo apt install wslu -y
sudo apt install unzip -y
# variables
echo "export profile=~/.bashrc" >> ~/.bash_aliases
# set terminal to vim mode
source ~/.bashrc
profile=~/.bashrc
echo "# setup configs" >> $profile
echo "set -o vi" >> $profile
# create ssh keys (can rely on gh instead)
# ssh-keygen -t ed25519 -C "[email protected]"
# eval "$(ssh-agent -s)"
# ssh-add ~/.ssh/id_ed25519
# homebrew
NONINTERACTIVE=1 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
(echo; echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"') >> $profile
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
# tools
yes | brew install z gh fzf
yes | brew install --cask font-cascadia-code-nf
gh config set editor vi
echo 'eval "$(gh completion -s bash)"' >> $profile
echo 'eval "$(gh copilot alias -- bash)"' >> $profile
echo '. /home/linuxbrew/.linuxbrew/etc/profile.d/z.sh' >> $profile
# fzf key bindings
echo '# fzf key binding remap' >> $profile
$(brew --prefix)/opt/fzf/install --all
echo "export FZF_DEFAULT_OPTS=\"\${FZF_DEFAULT_OPTS} --bind 'alt-j:down,alt-k:up'\"" >> $profile
echo "bind '\"\\ef\": \"\\C-r\"' # Remap command search to Alt-f" >> $profile
echo "bind '\"\\et\": \"\\C-t\"' # Remap file search to Alt-t" >> $profile
# Append the specified lines to .inputrc
cat <<EOF >> ~/.inputrc
TAB:menu-complete
"\e[Z":menu-complete-backward # shift tab
set completion-ignore-case On
set show-all-if-ambiguous On
set show-all-if-unmodified On
EOF
brew install neovim
echo 'alias vi=nvim' >> ~/.bash_aliases
source $profile
git config --global core.editor "nvim"
git config --global user.email "[email protected]"
git config --global user.name "Richard-Xiaorui Huang"
# oh-my-posh with default skins
brew install jandedobbeleer/oh-my-posh/oh-my-posh
echo '# use oh-my-posh' >> $profile
# echo 'eval "$(oh-my-posh init bash)"' >> $profile
echo 'eval "$(oh-my-posh init bash --config $(brew --prefix oh-my-posh)/themes/bubblesextra.omp.toml)"' >> $profile
source $profile
## Personal setup
# git clone https://github.com/Xiaorui-Huang/nvim.git ~/.config/nvim
git clone https://gist.github.com/Xiaorui-Huang/8133248ad21bc82525dfede2f8430e5a.git ~/omp_config
mv ~/omp_config/bubblesextra.omp.toml $(brew --prefix oh-my-posh)/themes/bubblesextra.omp.toml
rm -rf ~/omp_config
source $profile
echo "PLEASE login to gh and install gh-copilot to complete the setup"
echo "gh auth login"
echo "gh extension install github/gh-copilot"
Raw
wsl_cuda.sh
# Read https://docs.nvidia.com/cuda/wsl-user-guide/index.html#getting-started-with-cuda-on-wsl-2
# Install the wanted cuda toolkit version with LOCAL deb!
# https://developer.nvidia.com/cuda-downloads?target_os=Linux&target_arch=x86_64&Distribution=WSL-Ubuntu&target_version=2.0&target_type=deb_local
# Add the following to ~/.bashrc
export PATH=$PATH:/usr/local/cuda/bin
# https://github.com/microsoft/WSL/issues/8587#issuecomment-1229170859
export LD_LIBRARY_PATH=/usr/lib/wsl/lib:$LD_LIBRARY_PATH
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