Grep command to extract unique words

Question

Here is my file. ``` this is temp1 this is temp2 this is temp3 this is temp1 this is tempabc ``` How to use grep command that while looking for pattern 'temp', the result should be displayed as only 'temp1, temp2, temp3, tempabc', only unique words. Thanks

Accepted Answer

Display only the unique words starting with `temp`:

```
$ grep -o '\btemp\w*' file | sort -u
temp1
temp2
temp3
tempabc
```

Grep command to extract unique words

Solution

Problem