java - 执行 Runtime.getRuntime().exec AWK 时出现问题

Question

我想执行以下命令:

 awk '{print "1" $0}' /path_toFile/file.txt

这是我的代码:

String[] params = new String[3];
params[0] = "/usr/bin/awk";
params[1] = "print \"1\" $0";
params[2] = "/path_toFile/file.txt";

Runtime.getRuntime().exec(params);

出现错误:

Exit Value = 2
 syntax error The source line is 1.
 The error context is
                 >>> print <<<  \"1\" $0
 awk: Quitting
 The source line is 1.

Answer 1

代码缺少大括号({..}):

params[1] = "{print \"1\" $0}";