[Ubuntu] sudo: unable to execute /usr/bin/psql: Permission denied

문제 

root@joeylee:~# sudo -u postgres psql template1 sudo: unable to execute /usr/bin/psql: Permission denied

sudo: unable to execute /usr/bin/psql: Permission denied

우분투 PostgreSQL 설치 중 postgres 계정으로 psql 실행이 안되는 현상 발생

root@joeylee:~# chmod a+x /usr/bin/perl root@joeylee:~# sudo -u postgres psql template1

psql (9.3.11) Type "help" for help. template1=#

→ 전체에 /usr/bin/perl 실행권한 부여

→ psql 실행이 잘 됨