Snippet Collections

The `lsof` command lists open files and the processes that opened them. This is useful for identifying which processes are using specific files or directories.

The `pidof` command is used to find the process ID (PID) of a running program named `foo`. This is useful for identifying and managing specific processes.

List all running processes on a Linux system, displaying detailed information such as CPU and memory usage, process ID, and command. This is a common command for monitoring system activity.

Copy the file `foo.txt` from the local machine to the remote machine at `/home/ubuntu` using the `scp` command. This demonstrates secure file transfer between machines.

This snippet demonstrates configuring an SSH connection using the `~/.ssh/config` file. It defines a host named `name` with specific settings for the user (`foo`), hostname (`127.0.0.1`), and port (`8765`). The `ssh name` command then uses this configuration to establish a connection. This shows how to simplify SSH connections with predefined settings.

Connect to a remote host using SSH with a specified username (`user`), hostname (`hostname`), and port (`8765`). This demonstrates the use of the SSH protocol to establish a secure connection to a remote server.

Connect to a remote host using SSH with a custom port `8765`. This demonstrates how to specify a non-default port for SSH connections.

Connect to a remote host using SSH with the specified username and hostname. This demonstrates the basic usage of the SSH protocol for remote access.

Connect to a remote server using SSH with a private key file `foo.pem` for authentication. This demonstrates how to securely access a remote host using SSH with key-based authentication.

Connect to a remote server using the Secure Shell Protocol (SSH) with the specified `hostname`. This command establishes a secure connection to the remote server for command execution or file transfer.

Reattach to a detached screen session with the ID `31166`. This demonstrates using the `screen` command to manage terminal sessions, allowing users to resume work in a previously detached session.

List all active screen sessions. This command is used to check the currently running screen sessions in a terminal multiplexer environment.

The `screen` command starts a terminal multiplexer session, allowing users to manage multiple terminal windows within a single session. This is useful for running long processes or maintaining multiple terminal sessions simultaneously.

Attach to an existing tmux session with the target session ID `0`. This command is used to reconnect to a previously detached tmux session, allowing you to resume work in a terminal multiplexer environment.

List all active `tmux` sessions. This command is used to view the currently running `tmux` sessions, which is useful for managing multiple terminal sessions within a single window. This demonstrates basic `tmux` session management.

Start a new `tmux` session, which is a terminal multiplexer allowing multiple terminal windows and panes within a single session. This is useful for managing multiple terminal tasks efficiently.

The `lshw` command lists detailed information about the system's hardware configuration, including CPU, memory, storage, and peripherals. This is useful for diagnosing hardware issues or gathering system specifications.

List all PCI devices connected to the system using the `lspci` command. This provides detailed hardware information about PCI devices.

List all USB devices connected to the system using the `lsusb` command. This provides information about the USB buses and the devices attached to them.

Display the contents of the `/etc/resolv.conf` file, which contains DNS resolver configuration. This is used to view the DNS settings on a system.