Variable names (and values if available)

sysctl

List all the currently available non-opaque values

Force the value of the variable(s) to be output in raw, binary format

Print the description of the variable instead of its value

Separate the name and the value of the variable(s) with '='

Format output for human, rather than machine, readability

Show only variable names, not their values

Show only variable values, not their names

Show opaque variables (which are normally suppressed)

Suppress some warnings generated by sysctl to standard error

As -o, but prints a hex dump of the entire value instead of just the first few bytes

Name	Description
`-A, -a`	List all the currently available non-opaque values
`-b`	Force the value of the variable(s) to be output in raw, binary format
`-d`	Print the description of the variable instead of its value
`-e <variable...>`	Separate the name and the value of the variable(s) with '='
`-h`	Format output for human, rather than machine, readability
`-i`	Ignore unknown OIDs
`-N`	Show only variable names, not their values
`-n`	Show only variable values, not their names
`-o`	Show opaque variables (which are normally suppressed)
`-q`	Suppress some warnings generated by sysctl to standard error
`-X`	Equivalent to -x -a (for compatibility)
`-x`	As -o, but prints a hex dump of the entire value instead of just the first few bytes