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知乎专栏

第 19 章 Logging 日志

目录

19.1. lastlog - reports the most recent login of all users or of a given user
19.2. last, lastb - show a listing of last logged in users
19.3. rsyslog
19.3.1. rsyslog.conf
19.4. logrotate - rotates, compresses, and mails system logs
19.4.1. /etc/logrotate.conf
19.4.2. /etc/logrotate.d/
19.5. syslog-ng
19.6. syslog, klogctl - read and/or clear kernel message ring buffer; set console_loglevel
19.6.1. /etc/sysconfig/syslog
19.6.2. /etc/syslog.conf
19.6.3. logger
19.6.4. To Log Messages Over UDP Network
19.7. 挂载日志卷
19.7.1. 子卷挂载
19.7.2. 使用过个子卷
19.7.3. /etc/fstab配置

19.1. lastlog - reports the most recent login of all users or of a given user

		
[root@netkiller ~]# lastlog 
Username         Port     From                                       Latest
root             pts/0    198.19.0.198                              Sun Mar 30 12:20:32 +0800 2025
bin                                                                 **Never logged in**
daemon                                                              **Never logged in**
adm                                                                 **Never logged in**
lp                                                                  **Never logged in**
sync                                                                **Never logged in**
shutdown                                                            **Never logged in**
halt                                                                **Never logged in**
mail                                                                **Never logged in**
operator                                                            **Never logged in**
games                                                               **Never logged in**
ftp                                                                 **Never logged in**
nobody                                                              **Never logged in**
systemd-coredump                                                    **Never logged in**
dbus                                                                **Never logged in**
tss                                                                 **Never logged in**
sssd                                                                **Never logged in**
sshd                                                                **Never logged in**
chrony                                                              **Never logged in**
tcpdump                                                             **Never logged in**
systemd-oom                                                         **Never logged in**
docker           pts/0    14.153.186.26                             Sat Mar 29 17:52:43 +0800 2025
polkitd                                                             **Never logged in**
rtkit                                                               **Never logged in**
pipewire                                                            **Never logged in**
geoclue                                                             **Never logged in**
flatpak                                                             **Never logged in**
git              pts/1                                              Wed Jan  8 14:27:24 +0800 2025
coturn                                                              **Never logged in**
neo                                                                 **Never logged in**
opensips                                                            **Never logged in**
unbound                                                             **Never logged in**
asterisk                                                            **Never logged in**
kamailio                                                            **Never logged in**