who > users
cat users
liutao tty1 2019-01-17 02:11 (:0)
liutao pts/0 2019-01-17 02:11 (:0.0)
liutao pts/1 2019-01-17 02:12 (192.168.179.1)
liutao pts/2 2019-01-17 02:24 (192.168.179.1)
追加方式
who >> users
cat users
liutao tty1 2019-01-17 02:11 (:0)
liutao pts/0 2019-01-17 02:11 (:0.0)
liutao pts/1 2019-01-17 02:12 (192.168.179.1)
liutao pts/2 2019-01-17 02:24 (192.168.179.1)
liutao tty1 2019-01-17 02:11 (:0)
liutao pts/0 2019-01-17 02:11 (:0.0)
liutao pts/1 2019-01-17 02:12 (192.168.179.1)
liutao pts/2 2019-01-17 02:24 (192.168.179.1)Shell 输出重定向
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