Execution

Last updated 2 months ago

There are two ways to run commands via CommandBox: inside the CommandBox interactive shell, or one-at-a-time commands from your native shell.

Multiple Commands

If you open the interactive shell, you will see the CommandBox splash screen (ASCII art) and then you'll be presented with the CommandBox> prompt. You can enter as many commands as you wish in order and after each command is finished executing, you will be returned to the CommandBox prompt. If you have multiple commands you want to execute manually, this is the fastest method since CommandBox only loads once. This is also the only way to make use of features like tab complete and command history.

This example show running the box.exe executable from a Windows DOS prompt, executing the version, pwd, and echo commands, and then exiting back to DOS.

C:\>box.exe
_____ _ ____
/ ____| | | _ \
| | ___ _ __ ___ _ __ ___ __ _ _ __ __| | |_) | _____ __
| | / _ \| '_ ` _ \| '_ ` _ \ / _` | '_ \ / _` | _ < / _ \ \/ /
| |___| (_) | | | | | | | | | | | (_| | | | | (_| | |_) | (_) > <
\_____\___/|_| |_| |_|_| |_| |_|\__,_|_| |_|\__,_|____/ \___/_/\_\ v1.2.3.00000
Welcome to CommandBox!
Type "help" for help, or "help [command]" to be more specific.
CommandBox> version
CommandBox 1.2.3.00000
CommandBox> pwd
C:\
CommandBox> echo "Hello World!"
Hello World!
CommandBox> exit
C:\>

One-Off Commands

You can also spin up CommandBox from your native shell to execute a single command inline. You can do this if you only have one command to run, or you want to automate a command from a Unix shell script or Windows batch file. This mode will not show the ASCII splash screen, but keep in mind it still loads CommandBox up and unloads it in the background. Any output from the command will be left on your screen, and you will be returned to your native OS prompt.

Here is an example of running the version command from a Windows DOS screen. Note, you'll need to either do this from the directory that holds the box executable, or add the executable to your default command path so it is found.

C:\>box version
CommandBox 1.2.3.00000
C:\>

The box text is calling the CommandBox binary, and the version bit is passed along to the CommandBox shell to execute once it loads.

Debug Mode

You can also activate CommandBox in debug mode by passing the -debug flag in the command line. This will give you much more verbose information about the running CommandBox environment. This affects both the interactive shell or one-off commands

box version -debug
box server start -debug

Output

Output from commands will be ANSI-formatted text which, by default, streams directly to the console. When in the interactive shell, you can capture the output of commands and manipulate it, search it, or write it to a file. Use a pipe (|) to pass the output of one command into another command as its first input. Output can be piped between more than one command. Use a right bracket (>) and double right bracket (>>) to redirect output to the file system.

Pipe output into the grep command to apply a regex upon it. grep will only emit lines matching the regex.

cat myLogFile.txt | grep "variable .* undefined"

Pagination

Pipe output into the more command to output it line-by-line or page-by-page. Press the spacebar to advance one line at a time. Press the Enter key to advance one page at a time. Press ESC or “q” to abort output.

forgebox show | more

Redirection

Redirect output into a file, overwriting if it exits like so:

dir > fileList.txt

API Docs for fileWrite.

Use the double arrows to append to an existing file.

echo "Step 3 complete" >> log.txt

API Docs for fileAppend.

Tail files

You can pipe a large amount of text or a file name into the tail command to only output the few lines of the text/file. Adding the --follow flag when tailing a file will live-stream changes to the file to your console until you press Ctrl-C to stop.

forgebox search luis | tail
system-log | tail lines=50
tail myLogFile.txt --follow

Ad-hoc Java properties for the CLI

If you want to add ad-hoc Java Properties to the actual CLI process, you can set an environment variable in your OS called BOX_JAVA_PROPS in this format:

BOX_JAVA_PROPS="foo=bar;brad=wood"

That would create a property called foo and a property called brad with the values bar and wood respectively.