Enable support for the mod_exec module. WARNING: this could be a security risk

Packages describing “exec” as local USE flag

Package “exec” Flag Description
net-ftp/proftpd Enable support for the mod_exec module. WARNING: this could be a security risk
app-misc/lcd4linux Enable the exec plugin, to read output from external programs.
net-analyzer/rrdcollect Enable exec:/// support
net-irc/weechat Enable exec plugin

All packages providing a “exec” USE flag (3)