foreach行上缺少的列表并不是输入错误:如果您省略某个列表,则foreach结构将处理命令行上给出的参数列表。
The missing list on the foreach line isn't a typo: If you omit a list, the foreach structure processes the list of arguments given on the command line.
在处理那些可用行和列表示且通过命令(比如select和jion)操作的数据时,传统的分析和数据库方法表现非常优秀。
Traditional analytics and database methods are excellent at handling data that can easily be represented in rows and columns and manipulated by commands such as select and join.
运行ps命令,并将结果分配给一个列表(第 7行到第 8 行)。
Run the ps command and assign the results to a list (lines 7-8).
将该命令列表放到前台,添加一行输入,最后按下Ctrl - d表示输入文件的结尾。
Bring it to the foreground and provide a line of input followed by Ctrl-d to signal end of input file.
如果您不使用本命令,清单列表的行数为默认的60行。
If you do not use. Psize, listings use a default line-count of 60.
如果您不使用本命令,清单列表的行数为默认的60行。
If you do not use. Psize, listings use a default line-count of 60.
应用推荐