Directions: Fill in the blank in the following sentence with an exact word from the text.There are many different stories about the downturn in the proper use of English. ____ students should be able to distinguish。(填写一个以s开头的单词,意为“无疑、想必”)
【简答题】阅读以下程序,回答后面问题 #!/bin/sh for str in `ls` do echo "file name is:$str" done exit 0 (1)该程序中,str叫什么? (2)假设该程序保存为(第一次)保存为mysh.sh,写出完整的命令,使该文件具有执行权限。 (3)假设在该程序文件mysh.sh同目录下,还有有1.txt,2.txt,my2.sh,3.c一般(普通)文件以...