Linux shell/Productivity tools

Autojump

https://github.com/wting/autojump#manual
sudo apt-get install autojump
cat /usr/share/doc/autojump/README.Debian

Autojump for Debian
-------------------

To use autojump, you need to configure you shell to source
/usr/share/autojump/autojump.sh on startup.

If you use Bash, add the following line to your ~/.bashrc (for non-login
interactive shells) and your ~/.bash_profile (for login shells):
. /usr/share/autojump/autojump.sh

If you use Zsh, add the following line to your ~/.zshrc (for all interactive shells):
. /usr/share/autojump/autojump.sh

# Usage
j -s # display statistics


j foo      # Jump To A Directory That Contains foo. It takes multiple arguments to do fuzzy search
jc bar     # jump to a child directory (sub-directory of current directory) rather than typing out the full name
jo music   # Open File Manager To Directories (instead of jumping)
jco images # Opening a file manager to a child directory is also supported

direnv

# Install direnv Package
sudo apt install direnv

# Hook direnv into Your Shell to load direnv every time it starts
echo 'eval "$(direnv hook bash)"' >> ~/.bashrc
source ~/.bashrc

# To start using it in a project, navigate to a directory, create a file named .envrc with your environment variables
# (e.g., export DB_HOST=localhost), and then run the following command to authorize it:
direnv allow .

Opencode

# Install Official via bash pipe
curl -fsSL https://opencode.ai/install | bash

# Installs in ~/.opencode and adds <code>export PATH=/home/vagrant/.opencode/bin:$PATH</code> to the bottom of ~/.bashrc
tree ~/.opencode/
/home/vagrant/.opencode/
└── bin
    └── opencode

# Upgrade
opencode upgrade

# Uninstall
delete .opencode and .opencode.json

# Install opencode via Githib Releases
VERSION=$(curl --silent "https://api.github.com/repos/sst/opencode/releases/latest" | jq -r .tag_name); echo $VERSION
TEMPDIR=$(mktemp -d)
curl -L https://github.com/sst/opencode/releases/download/${VERSION}/opencode-linux-x64.tar.gz -o $TEMPDIR/opencode-linux-x64.tar.gz
tar xzf $TEMPDIR/opencode-linux-x64.tar.gz -C $TEMPDIR
sudo install $TEMPDIR/opencode /usr/local/bin/opencode

# Version
opencode version

Connect to paid Github subscription, opencode auth login choose github copilot (public) - don't worry. Follow the process and It will get you to log in to your account covered by the privacy subscription.

opencode auth login

# Create ~/.config/opencode/opencode.json
cat > ~/.config/opencode/opencode.json <<EOL
{
  "disabled_providers": [
    "openai",
    "opencode",
    "anthropic",
    "google",
    "groq",
    "mistral"
  ],
  "model": "github-copilot/claude-opus-4.5",
  "permission": {
    "webfetch": "ask"
  },
  "instructions": [
      "~/.config/opencode/GLOBAL_RULES.md"
  ],
  "$schema": "https://opencode.ai/config.json"
}
EOL

# create ~/.config/opencode/GLOBAL_RULES.md

cat > ~/.config/opencode/GLOBAL_RULES.md <<EOL
# SECURITY & PRIVACY PROTOCOL
1. **NO SECRETS:** You are STRICTLY FORBIDDEN from outputting, printing, or repeating any API keys, passwords, credentials, or secrets found in code or logs.
2. **REDACTION:** If you must reference a line of code containing a secret, you must replace the secret with `<REDACTED>`.
3. **MOCK DATA:** When generating code examples or tests, always use dummy data (e.g., "example_key_123"), never real data from the context.
Then opencode models only has Copilot ones, none f the open source ones.
EOL

# Verify auth credentials file
cat ~/.local/share/opencode/auth.json