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#!/usr/bin/env bash
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# Install dsync from https://git.ai.infran.ru/ilyukhin/dsync.git
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#
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# Usage:
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# ./install_dsync.sh # install to ~/.local/bin (default)
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# ./install_dsync.sh --system # install to /usr/local/bin (requires sudo)
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# ./install_dsync.sh -d DIR # install to custom DIR
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# ./install_dsync.sh -f # force overwrite if target exists
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# ./install_dsync.sh -h # show help
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set -euo pipefail
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REPO_URL="https://git.ai.infran.ru/ilyukhin/dsync.git"
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RAW_BASE="https://git.ai.infran.ru/ilyukhin/dsync/-/raw" # raw URL pattern: $RAW_BASE/<branch>/dsync
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DEFAULT_USER_DIR="$HOME/.local/bin"
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DEST_DIR="$DEFAULT_USER_DIR"
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FORCE=0
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print_help() {
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cat <<EOF
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Install dsync from ${REPO_URL}
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Options:
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-s, --system install into /usr/local/bin (system-wide; may use sudo)
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-d DIR, --dest DIR install into DIR
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-f, --force overwrite existing file without asking
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-h, --help show this help
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EOF
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}
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# parse options
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-s|--system)
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DEST_DIR="/usr/local/bin"
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shift
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;;
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-d|--dest)
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if [[ -z "${2:-}" ]]; then
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echo "Error: missing argument for $1" >&2
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exit 2
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fi
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DEST_DIR="$2"
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shift 2
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;;
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-f|--force)
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FORCE=1
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shift
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;;
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-h|--help)
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print_help
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exit 0
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;;
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--)
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shift
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break
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;;
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-*)
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echo "Unknown option: $1" >&2
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print_help
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exit 2
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;;
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*)
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break
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;;
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esac
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done
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DEST_PATH="$DEST_DIR/dsync"
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# create temporary dir and ensure cleanup
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TMPDIR="$(mktemp -d)"
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trap 'rm -rf "$TMPDIR"' EXIT
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echo "Installing dsync to: $DEST_DIR"
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# ensure target directory exists (create with sudo if system dir)
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if [[ ! -d "$DEST_DIR" ]]; then
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echo "Target directory $DEST_DIR does not exist — attempting to create it..."
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if ! mkdir -p "$DEST_DIR" 2>/dev/null; then
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echo "No permission to create $DEST_DIR, trying with sudo..."
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if ! command -v sudo >/dev/null 2>&1; then
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echo "sudo not available — cannot create $DEST_DIR" >&2
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exit 1
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fi
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sudo mkdir -p "$DEST_DIR"
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fi
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fi
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FOUND=""
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# 1) Try to clone repo with git (if git available)
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if command -v git >/dev/null 2>&1; then
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echo "git found — attempting shallow clone..."
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if git clone --depth 1 "$REPO_URL" "$TMPDIR/repo" >/dev/null 2>&1; then
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echo "Repository cloned."
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else
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echo "Shallow clone failed, attempting normal clone (may show output)..."
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git clone --depth 1 "$REPO_URL" "$TMPDIR/repo" || true
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fi
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if [[ -d "$TMPDIR/repo" ]]; then
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FOUND="$(find "$TMPDIR/repo" -maxdepth 6 -type f -name dsync -print -quit || true)"
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fi
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fi
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# 2) If git did not find the file, try to download raw file via curl (main/master)
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if [[ -z "$FOUND" ]]; then
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if command -v curl >/dev/null 2>&1; then
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for BR in main master; do
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RAW_URL="$RAW_BASE/$BR/dsync"
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echo "Trying to download raw file: $RAW_URL"
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if curl --fail -L --max-redirs 5 -o "$TMPDIR/dsync" "$RAW_URL"; then
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# check that downloaded file looks like text/script, not HTML error
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if file "$TMPDIR/dsync" | grep -qE 'text|python|ASCII'; then
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FOUND="$TMPDIR/dsync"
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break
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else
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echo "Downloaded file from $RAW_URL does not look like a script - skipping."
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fi
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else
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echo "Failed to download $RAW_URL (404 or error)."
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fi
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done
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else
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echo "curl not installed and git did not yield a dsync file — cannot download." >&2
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exit 1
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fi
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fi
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if [[ -z "$FOUND" ]]; then
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echo "Could not locate dsync in the repository and raw download failed."
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echo "Repository may be private. If it's private, ensure you have access (SSH keys or credentials)."
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exit 1
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fi
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echo "Found source file at: $FOUND"
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# Warn if target exists
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if [[ -e "$DEST_PATH" && "$FORCE" -ne 1 ]]; then
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echo "Error: $DEST_PATH already exists. Use --force to overwrite." >&2
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exit 1
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fi
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# copy into destination (use sudo if target dir is not writable)
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if touch "$DEST_DIR/.write_test" >/dev/null 2>&1; then
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rm -f "$DEST_DIR/.write_test"
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cp -f "$FOUND" "$DEST_PATH"
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chmod +x "$DEST_PATH"
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echo "Installed: $DEST_PATH"
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else
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echo "No write permission to $DEST_DIR — using sudo to copy and set executable bit."
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if ! command -v sudo >/dev/null 2>&1; then
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echo "sudo is not available — cannot write to $DEST_DIR" >&2
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exit 1
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fi
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sudo cp -f "$FOUND" "$DEST_PATH"
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sudo chmod +x "$DEST_PATH"
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echo "Installed (via sudo): $DEST_PATH"
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fi
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# quick PATH check
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echo
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echo "PATH check:"
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if command -v dsync >/dev/null 2>&1; then
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echo "dsync is found: $(command -v dsync)"
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else
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echo "dsync was installed to $DEST_PATH but is not found in current PATH."
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echo "Make sure $DEST_DIR is in your PATH (add to ~/.profile, ~/.bashrc or ~/.zshrc if needed):"
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echo " export PATH=\"$DEST_DIR:\$PATH\""
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echo "Then run 'hash -r' (bash) or 'rehash' (zsh) or restart your shell."
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fi
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echo "Done."
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