Package: iverilog

"iverilog" package binaries on CentOS:

/usr/bin/iverilog /usr/bin/iverilog-vpi /usr/bin/vvp

You may install this package on CentOS with yum install iverilog

"iverilog" package binaries on Debian:

/usr/bin/iverilog /usr/bin/iverilog-vpi /usr/bin/vvp

You may install this package on Debian with apt-get install iverilog