Here are a few more utilities to find system information on macOS.

$ uptime
11:48  up  3:01, 3 users, load averages: 1.09 0.97 0.93

$ diskutil list
/dev/disk0 (internal):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                         251.0 GB   disk0
   1:             Apple_APFS_ISC                         524.3 MB   disk0s1
   2:                 Apple_APFS Container disk3         245.1 GB   disk0s2
   3:        Apple_APFS_Recovery                         5.4 GB     disk0s3

/dev/disk3 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +245.1 GB   disk3
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            15.8 GB    disk3s1
   2:              APFS Snapshot com.apple.os.update-... 15.8 GB    disk3s1s1
   3:                APFS Volume Preboot                 460.9 MB   disk3s2
   4:                APFS Volume Recovery                831.9 MB   disk3s3
   5:                APFS Volume Data                    20.9 GB    disk3s5
   6:                APFS Volume VM                      20.5 KB    disk3s6

$ dscl . -list /Users
_accessoryupdater
_amavisd
_analyticsd
_appinstalld
_appleevents
_applepay
_appowner
_appserver
_appstore
_ard
_assetcache
_astris
_atsserver
_avbdeviced
_calendar
_captiveagent
_ces
_clamav
_cmiodalassistants
_coreaudiod
_coremediaiod
_coreml
_ctkd
_cvmsroot
_cvs
_cyrus
_darwindaemon
_datadetectors
_demod
_devdocs
_devicemgr
_diskimagesiod
_displaypolicyd
_distnote
_dovecot
_dovenull
_dpaudio
_driverkit
_eppc
_findmydevice
_fpsd
_ftp
_gamecontrollerd
_geod
_hidd
_iconservices
_installassistant
_installcoordinationd
_installer
_jabber
_kadmin_admin
_kadmin_changepw
_knowledgegraphd
_krb_anonymous
_krb_changepw
_krb_kadmin
_krb_kerberos
_krb_krbtgt
_krbfast
_krbtgt
_launchservicesd
_lda
_locationd
_logd
_lp
_mailman
_mbsetupuser
_mcxalr
_mdnsresponder
_mobileasset
_mysql
_nearbyd
_netbios
_netstatistics
_networkd
_notification_proxy
_nsurlsessiond
_oahd
_ondemand
_postfix
_postgres
_qtss
_reportmemoryexception
_rmd
_sandbox
_screensaver
_scsd
_securityagent
_sntpd
_softwareupdate
_spotlight
_sshd
_svn
_taskgated
_teamsserver
_timed
_timezone
_tokend
_trustd
_trustevaluationagent
_unknown
_update_sharing
_usbmuxd
_uucp
_warmd
_webauthserver
_windowserver
_www
_wwwproxy
_xserverdocs
administrator
daemon
nobody
root