从两个方案diff的输出，而不临时文件 [英] Diff output from two programs without temporary files

问题描述

说我有太多的程序 A 和 B ，我可以用运行./一个和 ./ b 。

Say I have too programs a and b that I can run with ./a and ./b.

是否有可能无需先写入临时文件差异比较它们的输出？

Is it possible to diff their outputs without first writing to temporary files?

推荐答案

使用≤（命令）一个命令的输出传递到另一个程序，就好像它是一个文件名称。水管猛砸程序的输出到管道，并通过文件名如的/ dev / FD / 63 外命令。

Use <(command) to pass one command's output to another program as if it were a file name. Bash pipes the program's output to a pipe and passes a file name like /dev/fd/63 to the outer command.

diff <(./a) <(./b)

同样可以使用方式＆gt;（命令）如果你想管的东西的到的命令

Similarly you can use >(command) if you want to pipe something into a command.

这篇关于从两个方案diff的输出，而不临时文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！