PostgreSQL : Get total pages of an object

SELECT pg_relation_size(<object_id>, 'main')/8192);

The pg_relation_size gives the disk space occupied by the object. Since each page is of 8kB, the pg_relation_size size is divided by 8192 to give the page count.

Vim - Highlight OverLength

Add the following code to /etc/vimrc if we want to highlight the characters that go beyond column 80.

highlight OverLength ctermbg=red ctermfg=white guibg=#592929

match OverLength /\%81v.\+