File Navigation & Paths
cd ..
Move up one directory.
touch file.txt
Create an empty file named file.txt if it doesn't already exist.
grep "ERROR" app.log
Find every line containing the word ERROR.
ls /var/log
List the Linux operating system log files.
uvicorn main:app --reload
Start a FastAPI application with automatic reload whenever code changes.
cd ~
Go to the current user's home directory.
touch one.txt two.txt three.txt
Create three empty files at the same time.
grep -i "warning" app.log
Search for warning without caring about uppercase or lowercase letters.
journalctl -b
Display logs from the current system boot.
gh repo clone octocat/demo
Clone a GitHub repository using the GitHub CLI.
pwd
Display the full absolute path of the current working directory.
cp report.txt backup.txt
Copy report.txt into a new file named backup.txt.
grep -r "TODO" .
Recursively search every file in the current directory tree for TODO.
tail -f /var/log/syslog
Continuously watch new system log messages as they are written.
gh pr list
List the open Pull Requests in the current GitHub repository.
cat ../notes/todo.txt
Display the contents of a file located one directory above in the notes folder.
cp -r project backup/
Copy an entire directory and all of its contents recursively.
grep -n "Exception" server.log
Search for Exception and display the matching line numbers.
docker logs my-container > docker.log
Save the Docker container's logs into a file named docker.log.
gh workflow list
Display the GitHub Actions workflows configured for the repository.
cat /var/log/syslog
Display the contents of the system log using an absolute path starting from the root directory.
mv report.txt archive/
Move the file into the archive directory (or rename it if the destination is a filename).
grep -v "^#" config.conf
Show every line except those beginning with a # comment.
terraform apply -no-color > terraform.log 2>&1
Run Terraform and save both standard output and error messages into terraform.log.
gh run watch
Watch a GitHub Actions workflow run in real time until it completes.