tail 查看文件的末尾内容

tail 用于查看文件的末尾内容,默认为文末 10 行。

命令格式:

tail [OPTION]... [FILE]...

常用选项:

-f, --follow[={name|descriptor}]
    循环读取文件内容,常用于查看日志写入

-n, --lines=[+]NUM
    指定查看的行数,如果有 + 号,则查看该行之后的所有内容

使用实例:

[Linux]$ tail /etc/samba/smb.conf
[global]
   map to guest = Bad User
   log file = /var/log/samba/%m
   log level = 1

[guest]
   path = /mnt/samba/
   read only = no
   guest ok = yes
   guest only = yes


[Linux]$ tail -n 3 /etc/samba/smb.conf
   read only = no
   guest ok = yes
   guest only = yes

# 在行号前加入 + 会从文件开头算起
[Linux]$ tail -n +3 /etc/samba/smb.conf
   log file = /var/log/samba/%m
   log level = 1

[guest]
   path = /mnt/vmware/samba/
   read only = no
   guest ok = yes
   guest only = yes