lsclocks - Man Page

display system clocks

Synopsis

lsclocks [option]

lsclocks is a simple command to display system clocks.

It allows to display information like current time and resolution of clocks like CLOCK_MONOTONIC, CLOCK_REALTIME and CLOCK_BOOTTIME.

-J, --json: Use JSON output format.
-n, --noheadings: Don’t print headings.
-o, --output list: Specify which output columns to print. See the Output Columns section for details of available columns.
--output-all: Output all columns.
-r, --raw: Use raw output format.
-r, --time clock: Show current time of one specific clock.
--no-discover-dynamic: Do not try to discover dynamic clocks.
-d, --dynamic-clock path: Also display specified dynamic clock. Can be specified multiple times.
--no-discover-rtc: Do not try to discover RTCs.
-x, --rtc path: Also display specified RTC. Can be specified multiple times.
-c, --cpu-clock pid: Also display CPU clock of specified process. Can be specified multiple times.
-h, --help: Display help text and exit.
-V, --version: Print version and exit.

Each column has a type. Types are surround by < and >.

TYPE <string>: Clock type.
ID <number>: Numeric clock ID.
CLOCK <string>: Name in the form CLOCK_
NAME <string>: Shorter, easier to read name.
TIME <number>: Current clock timestamp as returned by clock_gettime().
ISO_TIME <string>: ISO8601 formatted version of TIME.
RESOL_RAW <number>: Clock resolution as returned by clock_getres(2).
RESOL <number>: Human readable version of RESOL_RAW.
REL_TIME <string>: TIME time formatted as time range.
NS_OFFSET <number>: Offset of the current namespace to the parent namespace as read from /proc/self/timens_offsets.