jsonnet --help

 Jsonnet commandline interpreter v0.20.0
 
 jsonnet {<option>} <filename>
 
 Available options:
   -h / --help             This message
   -e / --exec             Treat filename as code
   -J / --jpath <dir>      Specify an additional library search dir (right-most wins)
   -o / --output-file <file> Write to the output file rather than stdout
   -m / --multi <dir>      Write multiple files to the directory, list files on stdout
   -y / --yaml-stream      Write output as a YAML stream of JSON documents
   -S / --string           Expect a string, manifest as plain text
   -s / --max-stack <n>    Number of allowed stack frames
   -t / --max-trace <n>    Max length of stack trace before cropping
   --gc-min-objects <n>    Do not run garbage collector until this many
   --gc-growth-trigger <n> Run garbage collector after this amount of object growth
   --version               Print version
 Available options for specifying values of 'external' variables:
 Provide the value as a string:
   -V / --ext-str <var>[=<val>]     If <val> is omitted, get from environment var <var>
        --ext-str-file <var>=<file> Read the string from the file
 Provide a value as Jsonnet code:
   --ext-code <var>[=<code>]    If <code> is omitted, get from environment var <var>
   --ext-code-file <var>=<file> Read the code from the file
 Available options for specifying values of 'top-level arguments':
 Provide the value as a string:
   -A / --tla-str <var>[=<val>]     If <val> is omitted, get from environment var <var>
        --tla-str-file <var>=<file> Read the string from the file
 Provide a value as Jsonnet code:
   --tla-code <var>[=<code>]    If <code> is omitted, get from environment var <var>
   --tla-code-file <var>=<file> Read the code from the file
 Environment variables:
 JSONNET_PATH is a colon (semicolon on Windows) separated list of directories added
 in reverse order before the paths specified by --jpath (i.e. left-most wins)
 E.g. JSONNET_PATH=a:b jsonnet -J c -J d is equivalent to:
 JSONNET_PATH=d:c:a:b jsonnet
 jsonnet -J b -J a -J c -J d
 
 In all cases:
 <filename> can be - (stdin)
 Multichar options are expanded e.g. -abc becomes -a -b -c.
 The -- option suppresses option processing for subsequent arguments.
 Note that since filenames and jsonnet programs can begin with -, it is advised to
 use -- if the argument is unknown, e.g. jsonnet -- "$FILENAME".

Jsonnet, jsonnet --help