ls – Lists the contents of the current directory.
    cd – Changes the current working directory.
    pwd – Prints the current working directory.
    mkdir – Creates a new directory.
    touch – Creates a new file or updates the timestamp of an existing file.
    rm – Removes a file or directory.
    rmdir – Removes an empty directory.
    cp – Copies a file or directory.
    mv – Moves or renames a file or directory.
    cat – Displays the contents of a file.
    head – Displays the first few lines of a file.
    tail – Displays the last few lines of a file.
    grep – Searches for a pattern in a file.
    find – Searches for files or directories in a directory hierarchy.
    ps – Displays information about running processes.
    top – Displays information about system resources and processes.
    kill – Sends a signal to a process to terminate it.
    ping – Tests network connectivity to a server.
    ssh – Connects to a remote server over SSH.
    scp – Copies files between hosts over SSH.
    tar – Creates or extracts a tar archive.
    gzip – Compresses or decompresses files using gzip compression.
    chmod – Changes the permissions of a file or directory.
    chown – Changes the owner of a file or directory.
    su – Switches to the superuser or another user account.
    sudo – Executes a command with elevated privileges.
    df – Displays information about disk usage.
    du – Displays information about file and directory sizes.
    ifconfig – Displays information about network interfaces.
    iwconfig – Displays information about wireless network interfaces.
    mount – Mounts a file system.
    umount – Unmounts a file system.
    ssh-keygen – Generates SSH public and private key pairs.
    scp – Copies files between hosts over SSH.
    wget – Downloads files from the internet.
    curl – Transfers data from or to a server using various protocols.
    netstat – Displays network connections, routing tables, and network interfaces.
    route – Manipulates network routing tables.
    uname – Displays information about the operating system.
    date – Displays or sets the system date and time.
    whoami – Displays the current user.
    id – Displays information about a user or group.
    groups – Displays a user’s group memberships.
    passwd – Changes a user’s password.
    adduser – Adds a new user account.
    userdel – Deletes a user account.
    visudo – Edits the sudoers file for configuring sudo access.
    crontab – Schedules tasks to run at specified intervals.
    systemctl – Controls the system’s systemd system and service manager.
    journalctl – Views and manages system logs.

These commands are just a few of the many commands available in Linux, but they should be enough to get you started with basic file and system management tasks.