I Have the following file (teste.tsv):

```
dlah_C1 ACTGTCTGTCACTGTGTTGTGATGTTGTGTGTG
blah_C2 ACTTTATATATT
blah_C3 ACTTATATATATATA
blah_C4 ACTTATATATATATA
blah_C5 ACTTTATATATT
dlah_C6 ACTTATATATATATA
dlah_C7 ACTTATATATATATA
dlah_C8 ACTTTATATATT

```

I have to print only the lines with the word "blah" from the teste.tsv file

I`ve made that command line:

```
cat teste.tsv | awk -F " " '{if($1 == "blah"){print $0}}'

```

But I Know It's wrong because I want to cat any words starting to blah. I've tried $1 == "blah\*" or $1 == "blah.\*" but nothing happens.

Could someone help me?
Thanks a lot.