Configuration files , log files , csv and fixed - length data files , error files , documentation , and source code itself are all just sequences of words with bits of constraint and formatting applied 配置文件、记录文件、 csv文件和固定长度的数据文件、错误文件、文本和源代码本身都是由一些符合约束和格式的词汇序列构成。
Selpg writes pages 10 to 20 to its stdout , which is redirected to " output file " ; whatever selpg writes to stderr is redirected to " error file . " this invocation can be used when " input file " is large ; you don t want to sit around waiting for selpg to complete , and you want to save both the output and the errors Selpg将第10页到第20页写至标准输出,标准输出被重定向至“ output _ file ” ; selpg写至标准错误的所有内容都被重定向至“ error _ file ” 。当“ input _ file ”很大时可使用这种调用;您不会想坐在那里等着selpg完成工作,并且您希望对输出和错误都进行保存。