Use these scripts to get stable URLs to a given file in your repo, optionally highlighting certain lines. These kinds of links are useful for discussions on GitHub, or pointing to specific references.

gh-file-link.bash

#!/bin/bash
#
# Prints a Markdown link to the GitHub URL for a given file at the latest commit hash and copies it to the clipboard.

LINES=""
FILE_PATH=""
while [ $# -gt 0 ]; do
  case $1 in
    -l) LINES="$2"; shift 2 ;;
    *) FILE_PATH="$1"; shift ;;
  esac
done

if [ -z "$FILE_PATH" ]; then
  echo "Usage: gh-file-link [-l <line|start-end>] <path-relative-to-repo-root>"
  exit 1
fi

REMOTE_URL=$(git remote get-url origin)
REPO=$(echo "$REMOTE_URL" | sed -E 's#(git@github\.com:|https://github\.com/)##; s/\.git$//')
COMMIT=$(git rev-parse HEAD)
FILE_URL="https://github.com/${REPO}/blob/${COMMIT}/${FILE_PATH}"

LINK_SUFFIX=""
if [ -n "$LINES" ]; then
  if echo "$LINES" | grep -q '-'; then
    START=$(echo "$LINES" | cut -d'-' -f1)
    END=$(echo "$LINES" | cut -d'-' -f2)
    FILE_URL="${FILE_URL}#L${START}-L${END}"
    LINK_SUFFIX=" (lines ${START}-${END})"
  else
    FILE_URL="${FILE_URL}#L${LINES}"
    LINK_SUFFIX=" (line ${LINES})"
  fi
fi

FILE_LINK="[\`${FILE_PATH}\`${LINK_SUFFIX}](${FILE_URL})"

printf '%s' "$FILE_LINK" | pbcopy
echo "Copied: $FILE_LINK"

gh-file-url.bash

#!/bin/bash
#
# Prints the GitHub URL for a given file at the latest commit hash and copies it to the clipboard.

LINES=""
FILE_PATH=""
while [ $# -gt 0 ]; do
  case $1 in
    -l) LINES="$2"; shift 2 ;;
    *) FILE_PATH="$1"; shift ;;
  esac
done

if [ -z "$FILE_PATH" ]; then
  echo "Usage: gh-file-url [-l <line|start-end>] <path-relative-to-repo-root>"
  exit 1
fi

REMOTE_URL=$(git remote get-url origin)
REPO=$(echo "$REMOTE_URL" | sed -E 's#(git@github\.com:|https://github\.com/)##; s/\.git$//')
COMMIT=$(git rev-parse HEAD)
FILE_URL="https://github.com/${REPO}/blob/${COMMIT}/${FILE_PATH}"

if [ -n "$LINES" ]; then
  if echo "$LINES" | grep -q '-'; then
    START=$(echo "$LINES" | cut -d'-' -f1)
    END=$(echo "$LINES" | cut -d'-' -f2)
    FILE_URL="${FILE_URL}#L${START}-L${END}"
  else
    FILE_URL="${FILE_URL}#L${LINES}"
  fi
fi

printf '%s' "$FILE_URL" | pbcopy
echo "Copied: $FILE_URL"

Usage

Get GitHub file URL at latest commit and copy it to clipboard:

gh-file-url packages/ai/src/generate-text/generate-text.ts

Get GitHub file Markdown link at latest commit and copy it to clipboard:

gh-file-link packages/ai/src/generate-text/generate-text.ts

With a specific line number highlighted:

gh-file-url packages/ai/src/generate-text/generate-text.ts -l 12

gh-file-link packages/ai/src/generate-text/generate-text.ts -l 12

With a specific line number range highlighted:

gh-file-url packages/ai/src/generate-text/generate-text.ts -l 10-15

gh-file-link packages/ai/src/generate-text/generate-text.ts -l 10-15

Setup

Recommended usage so you have these globally available:

1. Download these files.
2. Rename them to drop the .bash suffix.
3. Make them executable (chmod +x <file>).
4. Put them in a bin directory that's in your $PATH.