How to insert TAB character in bash?

To insert a tab character in bash you can do CTRL-V followed by TAB or only write \t. Here is an example:

[murphy@eva02]$ head -n 1 datos.tsv | awk -F "        " ' {print $1} '
pozo
[murphy@eva02]$ head -n 1 datos.tsv | awk -F "\t" ' {print $1} '
pozo

From here.