I have two files.

file1 has the data like belowing containing only one column.

```
112.319
108.915
105.512

```

file2 has the data like belowing containing eight columns.

```
0.000000     0.000     0.000     0.000     0.000         0     0.0001.0000E+20  
0.000000     0.000     0.000     0.000 20.000000         0     0.0001.0000E+20  
0.000000     0.000     0.000     0.000 20.000000         0     0.0001.0000E+20 

```

I want to replace the first column of file2 with the first column of file1 and the output would be

```
112.319     0.000     0.000     0.000     0.000         0     0.0001.0000E+20  
108.915     0.000     0.000     0.000 20.000000         0     0.0001.0000E+20  
105.512     0.000     0.000     0.000 20.000000         0     0.0001.0000E+20

```

I tried to replace the first record of each line with the first record of other line but was not successful. I would be thankful if somebody can help me doing is using sed.

best regards.