I want to print this output
+------------------------------------------------+--+
| tab_name |
+------------------------------------------------+--+
| table1 |
| table2 |
| table3 |
| wt |
| wa |
| wal |
+------------------------------------------------+--+
AS without header and without table format in beeline
table1
table2
table3
wt
wa
wal
From the shell
beeline --showHeader=false --outputformat=tsv2 -e "select ..."
Within beeline
!set showheader false
!set outputformat tsv2
select ...;