Redirector Function 译:重定向功能(函数) cmd1 | cmd2 Pipe; take standard output of cmd1 as standard input to cmd2 译:管道;cmd2的标准输入接收自cmd1的标准输出 > file Direct standard output to file 译:直接将标准输出到file < file Take standard input from file 译:接收来自file的标准输入 >> file Direct standard output to file; append to file if it already exists 译:直接将标准输出到file;如果file存在则附加在其文件末尾 >| file Force standard output to file even if noclobber is set 译:强制标准输出到file n>| file Force output to file from file descriptor n even if noclobber is set 译:强制文件描述符n的输出重定向到file <> file Use file as both standard input and standard output 译:使file即为标准输入又是标准输出(以读写方式打开file) n<> file Use file as both input and output for file descriptor n 译:使文件名描述符n的输入和输出均定向到file(以读写方式打开file) << label Here-document; see text 注: lable为输入结束标签,支持多行输入(一般定义为EOF) n> file Direct file descriptor n to file 译:直接将文件描述符n输出到file n< file Take file descriptor n from file 译:文件描述符n输入来自file n>> file Direct file descriptor n to file; append to file if it already exists 译:直接将文件描述服n输出到file;如果file存在则在其末尾附加 n>& Duplicate standard output to file descriptor n 译:将标准输出(&1)的地址复制给文件描述符n(n=&1) n<& Duplicate standard input from file descriptor n 译:将标准输入(&0)的地址复制给文件描述符n(n=&0) n>&m File descriptor n is made to be a copy of the output file descriptor 译:将文件描述服m的地址复制给文件描述符n做为输出(n stdout=m stdout) n<&m File descriptor n is made to be a copy of the input file descriptor 译:将文件描述符m的地址复制给文件描述符n作为输入(m stdin=m stdin) &>file Directs standard output and standard error to file 译:直接将标准输出和标准错误信息输出到文件(1>file 2>&1) <&- Close the standard input 译:关闭标准输入 >&- Close the standard output 译:关闭标准输出 n>&- Close the output from file descriptor n 译:关闭文件描述符n的标准输出(n stdout = NULL) n<&- Close the input from file descriptor n 译:关闭文件描述符n的标准输入(n stdin = NULL) |