atd
parent
6f94f240d2
commit
537b745776
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@ -618,3 +618,52 @@ root@ls-2024-9:/etc/systemd/system# systemctl daemon-reload
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root@ls-2024-9:/etc/systemd/system# systemctl restart mysql.service
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```
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### ATD
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```bash
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root@ls-2024-9:/etc/systemd/system# ps -f -p 834
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UID PID PPID C STIME TTY TIME CMD
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daemon 834 1 0 07:59 ? 00:00:00 /usr/sbin/atd -f
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```
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```bash
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root@ls-2024-9:/etc/systemd/system# sudo systemctl status atd
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● atd.service - Deferred execution scheduler
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Loaded: loaded (/lib/systemd/system/atd.service; enabled; vendor preset: enabled)
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Active: active (running) since Fri 2024-02-02 07:59:27 UTC; 2h 21min ago
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Docs: man:atd(8)
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Main PID: 834 (atd)
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Tasks: 1 (limit: 1116)
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Memory: 452.0K
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CPU: 5ms
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CGroup: /system.slice/atd.service
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└─834 /usr/sbin/atd -f
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Feb 02 07:59:27 ls-2024-9 systemd[1]: Starting Deferred execution scheduler...
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Feb 02 07:59:27 ls-2024-9 systemd[1]: Started Deferred execution scheduler.
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```
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Lets check which files does it have open:
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```bash
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root@ls-2024-9:/etc/systemd/system# sudo lsof -p 834
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COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
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atd 834 daemon cwd DIR 252,1 4096 259122 /var/spool/cron/atjobs
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atd 834 daemon rtd DIR 252,1 4096 2 /
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atd 834 daemon txt REG 252,1 30888 73749 /usr/sbin/atd
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atd 834 daemon mem REG 252,1 27072 3571 /usr/lib/x86_64-linux-gnu/libcap-ng.so.0.0.0
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atd 834 daemon mem REG 252,1 613064 4750 /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0.10.4
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atd 834 daemon mem REG 252,1 133200 3594 /usr/lib/x86_64-linux-gnu/libaudit.so.1.0.0
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atd 834 daemon mem REG 252,1 2220400 69316 /usr/lib/x86_64-linux-gnu/libc.so.6
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atd 834 daemon mem REG 252,1 166280 3926 /usr/lib/x86_64-linux-gnu/libselinux.so.1
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atd 834 daemon mem REG 252,1 67736 4671 /usr/lib/x86_64-linux-gnu/libpam.so.0.85.1
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atd 834 daemon mem REG 252,1 240936 34599 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
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atd 834 daemon 0u CHR 1,3 0t0 5 /dev/null
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atd 834 daemon 1u CHR 1,3 0t0 5 /dev/null
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atd 834 daemon 2u CHR 1,3 0t0 5 /dev/null
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atd 834 daemon 3uW REG 0,25 4 1442 /run/atd.pid
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```
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So far nothing sus. But just in case lets disable it.
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- `systemctl disable --now atd`
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