tsort [OPTION] [FILE]
!subtitle:功能
对文件内容进行拓扑排序。
!subtitle:类型
可执行文件（/usr/bin/tsort），属于 coreutils。
!subtitle:参数
OPTION 选项：
--help - 显示帮助
--version - 显示版本
FILE - 如果没有这个参数或指定为 -，则读取标准输入
$ cat 1.txt # 查看文件
F G
D E
A B
E F
C D
D E
$ tsort 1.txt # 拓扑排序
A
C
B
D
E
F
G
源文件表示 F -> G, D -> E, A -> B, E -> F, C -> D, D -> E，拓扑排序后得到 A -> B -> C -> D -> E -> F -> G。
TSORT(1) User Commands TSORT(1)
NAME
tsort - perform topological sort
SYNOPSIS
tsort [OPTION] [FILE]
DESCRIPTION
Write totally ordered list consistent with the partial ordering in
FILE.
With no FILE, or when FILE is -, read standard input.
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Mark Kettenis.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
Full documentation <https://www.gnu.org/software/coreutils/tsort>
or available locally via: info '(coreutils) tsort invocation'
GNU coreutils 9.4 April 2024 TSORT(1)