Package: grep Version: 2.20-4.1 cat /bin/egrep #!/bin/sh exec grep -E "$@"
should replace with exec /bin/grep -E "$@" to reproduce: root@debian-512mb-fra1-01:/opt/firewall# bash root@debian-512mb-fra1-01:/opt/firewall# PATH=/usr/local egrep "any" /etc/* bash: egrep: command not found