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关于进程与管道的问题,谢谢。
来源: 互联网 发布时间:2015-12-23
本文导语: 一个进程负责将信息写入命名管道文件中,另外一个进程负责从命名管道中将信息读出来,请问这个shell程序该如何写啊?还有这两个进程如何写啊。 | i do not know why you want to use named pipe in Shel...
一个进程负责将信息写入命名管道文件中,另外一个进程负责从命名管道中将信息读出来,请问这个shell程序该如何写啊?还有这两个进程如何写啊。
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i do not know why you want to use named pipe in Shell script. but anyway, it is easy if you use nameless pipe:
1st_program | 2nd_program
the shell will create the processes for the 2 programs, and the 1st program will write data to the pipe and 2nd will read data from the pipe.
With named pipe, namely FIFO, you can use:
mkfifo yourfifoname
1st_program >> yourfifoname &
2nd_program
1st_program | 2nd_program
the shell will create the processes for the 2 programs, and the 1st program will write data to the pipe and 2nd will read data from the pipe.
With named pipe, namely FIFO, you can use:
mkfifo yourfifoname
1st_program >> yourfifoname &
2nd_program