操作系统单选难度 3真题改编 · 2024
461. 有一个名为 journal 的日志文件内容如下:
Sep 01 10:41:59 my-archlinux onedrive[698] Starting a sync with OneDrive
Sep 01 10:41:59 my-archlinux onedrive[698] Syncing changes from OneDrive ...
Sep 01 10:42:04 my-archlinux onedrive[698] Sync with OneDrive is complete
Sep 01 10:46:03 my-archlinux rtkit-daemon[894] Supervising 5 threads of 4 processes of 1 users.
Sep 01 10:46:03 my-archlinux rtkit-daemon[894] Supervising 5 threads of 4 processes of 1 users.
Sep 01 10:54:30 my-archlinux audit[25492] CRED_REFR pid=25492 uid=2333 auid=2333 ses=2 msg='op=PAM:setcred grantors=pam_faillock,pam_permit,pam_faillock acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/3 res=success'
Sep 01 10:54:30 my-archlinux dbus-daemon[336] [system] Activating via systemd: service name='org.freedesktop.home1' unit='dbus-org.freedesktop.home1.service' requested by ':1.147' (uid=0 pid=25492 comm="sudo journalctl --since 10:54 ")
Sep 01 10:54:30 my-archlinux sudo[25492] pam_systemd_home(sudo:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
Sep 01 10:54:30 my-archlinux audit[25492] USER_START pid=25492 uid=2333 auid=2333 ses=2 msg='op=PAM:session_open grantors=pam_limits,pam_unix,pam_permit acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/3 res=success'
Sep 01 10:54:30 my-archlinux dbus-daemon[336] [system] Activation via systemd failed for unit 'dbus-org.freedesktop.home1.service': Unit dbus-org.freedesktop.home1.service not found.
Sep 01 10:54:46 my-archlinux sudo[25492] pam_unix(sudo:session): session closed for user root
现在要提取出所有的服务名称且无重复,如 onedrive[698] 等,以下命令正确的是()
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