---
name: "pmjson"
section: "1"
platform: "linux"
package: "pcp"
version: "7.2.2-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/pmjson"
---

# pmjson(1)

Performance Co-Pilot JSON dumping utility

## NAME

**pmjson** - Performance Co-Pilot JSON dumping utility

## SYNOPSIS

**pmjson** \[**-mnpqyV?**\] \[**-D** *debug*\] \[**-i** *infile*\] \[**-o** *outfile*\]

## DESCRIPTION

**pmjson** is used to manipulate JSON (JavaScript Object Notation) formatted text used in the Performance Co-Pilot (PCP toolkit). It can produce minimal and human readable output formats when it is supplied with valid JSON input.

## OPTIONS

The available command line options are:

- **-i** *infile*, **--in**=*infile*

  JSON formatted input *infile* - path to a file from which input should be read. If this option is omitted, then **pmjson** will read from the standard input stream.

- **-m**, **--minimal**

  Produce JSON output with all superfluous whitespace removed from the resulting JSON string.

- **-o** *outfile*, **--out**=*outfile*

  Formatted output is written to the named *outfile*. If this option is omitted, then **pmjson** will write to the standard output stream.

- **-n**, **--not-pretty**

  Produce JSON output in raw, monochromatic format (default if output is being sent to a file).

- **-p**, **--pretty**

  Produce JSON output in a human-friendly format (default if output is on a terminal).

- **-q**, **--quiet**

  Verify the input as valid JSON only, no output is produced.

- **-V**, **--version**

  Display version number and exit.

- **-y**, **--yaml**

  Produce YAML-like output, a human-readable format with less syntactic sugar than JSON.

- **-?**, **--help**

  Display usage message and exit.

## PCP ENVIRONMENT

Environment variables with the prefix **PCP\_** are used to parameterize the file and directory names used by PCP. On each installation, the file */etc/pcp.conf* contains the local values for these variables. The **$PCP\_CONF** variable may be used to specify an alternative configuration file, as described in [**pcp.conf**(5)](/pcp.conf/5.md).

## DEBUGGING OPTIONS

The **-D** or **--debug** option enables the output of additional diagnostics on *stderr* to help triage problems, although the information is sometimes cryptic and primarily intended to provide guidance for developers rather than for end-users. *debug* is a comma separated list of debugging options; use [**pmdbg**(1)](/pmdbg/1.md) with the **-l** option to obtain a list of the available debugging options and their meaning.

## SEE ALSO

[**PMWEBAPI**(3)](/PMWEBAPI/3.md), [**pcp.conf**(5)](/pcp.conf/5.md) and [**pcp.env**(5)](/pcp.env/5.md).