【单选题】Create a new file "new.txt" that is a concatenation of "file1.txt" and "file2.txt".
A. cat file1.txt file2.txt > new.txt B. cat file1.txt file2.txt = new.txt C. make new.txt=file1.txt+file2.txt D. cp file1.txt | head file2.txt > new.txt
A. cat file1.txt file2.txt > new.txt B. cat file1.txt file2.txt = new.txt C. make new.txt=file1.txt+file2.txt D. cp file1.txt | head file2.txt > new.txt
举一反三
- 把当前目录下的filel. txt复制为file2. txt,正确的命令是 A: copy filel. txt file2. txt B: cp filel.txt I file C: cat file2. txt filel. txt D: cat file. txt > file2. txtt
- 在Windows10中,以下文件名()是错误的. A: &file.txt B: file*.txt C: file.txt D: 文件.txt
- 以下代码,允许上传的文件类型有( )。<;input type="file" name="file" accept="text/*">; A: .css B: .shtml C: .txt D: .rtf
- 【单选题】txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。txt ,图片,Word。 A. 1 B. txt ,图片,Word。 C. txt ,图片,Word。
- 实现创建一个 JavaScript 数组的语法是 _________ A: var txt = newArray("tim","kim","jim") B: var txt = newArray(1:"tim",2:"kim",3:"jim") C: var txt = new Array="tim","kim","jim" D: var txt = newArray:1=("tim")2=("kim")3=("jim")