LSCLOCKS(1) lsclocks - lsclocks [] lsclocks . It allows to display information like current time and resolution of clocks. Different kinds of clocks are supported. o POSIX clocks: CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_BOOTTIME, etc. o CPU clocks: clock_getcpuclockid(3). o PTP clocks: /dev/ptp0. o RTC clocks: /dev/rtc0. o Auxiliary clocks: CLOCK_AUX0, CLOCK_AUX1, etc. -J, --json B JSON. -n, --noheadings . -o, --output , . . << *, . --output-all . -r, --raw . -t, --time clock . --no-discover-dynamic . -d, --dynamic-clock . . --no-discover-rtc RTC. -x, --rtc RTC. . -c, --cpu-clock pid . . -h, --help . -V, --version . LSCLOCKS_COLUMNS= Specifies a comma-separated list of output columns to print. All columns listed in OUTPUT COLUMNS can be used. LIBSMARTCOLS_DEBUG=all libsmartcols. LIBSMARTCOLS_DEBUG_PADDING=on . . < >. TYPE <> . ID <> . CLOCK <> CLOCK_ NAME <> , . TIME <> Current clock timestamp as returned by clock_gettime(2). ISO_TIME <> TIME ISO8601. RESOL_RAW <> , clock_getres(2). RESOL <> RESOL_RAW. REL_TIME <> TIME . NS_OFFSET <> , /proc/self/timens_offsets. Thomas Weissschuh clock_getres(2) clock_gettime(2) lsclocks util-linux, Linux . util-linux 2.42.3 2026-09-02 LSCLOCKS(1)