Dziewiate_21
0 21 词汇卡 michalesq
问题  |
答案 |
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How to renice program, execute command and take every running httpd process
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renice -n 10 $(pgrep httpd)
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How to tar a file with priority -20 and display time needed to process?
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time nice -n -20 tar -cvf test. tar test. file
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Where can you find information about number of CPUs?
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cat /proc/cpuinfo
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What does top -d 2 do?
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Set top updates to 2 seconds
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What does k do in top command?
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kill process
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What does r do in top command?
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renice process
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What does P do in top command?
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sort by CPU usage
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What does M do in top command?
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sort by memory usage
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What does t do in top command?
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disable line with tasks
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What does m do in top command?
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disable line with memory usage
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What does l do in top command?
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disable line with cpu usage
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Where all non persistent logs for journalctl are written to?
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cd /run/log/journal
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How to make journalctl logs persistent?
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go to /etc/systemd/journalctl. conf, uncomment storage
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Where all persistent logs for journalctl are written to?
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/var/log/journal
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Where would you configure logrotation for journalctl?
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/etc/logrorate.conf
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How to display last 10 lines of logs?
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journalctl -n
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How to display logs with priority info?
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journalctl -p info
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How to display logs since yesterday?
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journalctl --since=yesterday
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How to display logs since one hour ago?
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journalctl --since "one hour ago"
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How to display info about boot process?
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systemd-analyze
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How to dusplay info about the process lanunched very long?
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systemd-analyze blame
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