将命令输出重定向到awk中的文件

Question

1. 我需要将awk中的特定命令的输出重定向到文件。
2. 我需要访问if。
之外的数组

我尝试过的事情：

awk '
{
  if (condition)
  {
    array[FNR]=$1;
    print array[FNR];
    df home/user/loc1 home/user/loc2 > file1.txt
  }
  fi
  print array[]
}' /home/user/testfile.txt

我得到的错误：

awk: cmd. line:18:   df home/user/loc1 home/user/loc2 > file1.txt
awk: cmd. line:18:                                                     
                                                            ^ syntax error                                                                                                                                                    


awk: cmd. line:20:     print array[]
awk: cmd. line:20:                 ^ syntax error
awk: cmd. line:20: fatal: invalid subscript expression

Answer 1

我相信这就是你要找的东西，

awk '
{
    if (condition)
    {
        array[FNR]=$1;
        print array[FNR] # >> file2.txt (use this if you want to print to a file)
        system("df home/user/loc1 home/user/loc2") >> file1.txt # Not sure why you want to run df shell command inside awk
    }
} END { # after the entire test file is read you can do your calculations below
    for (i in array) print array[i];
}' /home/user/testfile.txt