- replicator
- 
non interactive Debian installer
- report
- 
report news problems and status
- repquota
- 
summarize quotas for a filesystem
- reroute
- 
zmailer's utility to move queued message back to router
- rescan-scsi-bus.sh
- 
rescan the SCSI bus.
- reseed
- 
seeds urandom with a truly random seed retrieved from random.org
- resize2fs
- 
ext2/ext3 file system resizer
- resizecons
- 
change kernel idea of the console size
- resizefs.reiserfs
- 
reiserfs filesystem resizing program.
- resize_reiserfs
- 
resizer tool for the ReiserFS filesystem
- resmgrd
- 
resource manager daemon
- resolvconf
- 
manage nameserver information
- resolver
- 
DNS resolver
- restartd
- 
process checker and/or reloader
- restore
- 
restore files or file systems from backups made with dump
- restorecon
- 
set file security contexts.
- RevertBastille
- 
revert changes made by Bastille
- revnetgroup
- 
generate reverse netgroup data
- rinetd
- 
rinetd
- rip98d
- 
Send and receive RIP98 routing messages
- ripd
- 
a RIP routing engine for use with Quagga routing software.
- ripngd
- 
a RIPNG routing engine for use with Quagga routing software.
- rkhunter
- 
run a system check for rootkits or other malware
- rlinetd
- 
an(other) internet super-server
- rlm_ippool_tool
- 
dump the contents of the FreeRadius ippool database files.
- rlogind
- 
rlogind
- rlprd
- 
remote printing proxy daemon
- rmail
- 
rmail
- handle remote mail received via uucp
- rmcat
- 
remove GNATS categories
- rmimage
- 
remove a SystemImager image.
- rmlist
- 
Remove the components of a mailing list with impunity - beware!
- rmmod
- 
simple program to remove a module from the Linux Kernel
- rmt-dump
- 
remote magtape protocol module
- rmt-star
- 
remote magnetic tape protocol server
- rmt-tar
- 
rmt
- rmtermd
- 
Old style DECnet terminal services for Linux
- rndc
- 
name server control utility
- rndc-confgen
- 
rndc key generation tool
- rnews
- 
accept and spool news input
newsspool, newsrun - news input spooler and processing
newsrunning - control news-processing daemon
- rngd
- 
Check and feed random data from hardware device to kernel entropy pool
- rootflags
- 
See rdev.8
- rose_call
- 
See ax25_call.8
- rotatelogs
- 
Piped logging program to rotate Apache logs
- route
- 
show / manipulate the IP routing table
- router
- 
zmailer message routing daemon
- rpc.dracd
- 
Dynamic Relay Authorization Control server
- rpc.mountd
- 
NFS mount daemon
- rpc.nfsd
- 
NFS service daemon
- rpc.rigd
- 
Hamlib rig service daemon
- rpc.rotd
- 
Hamlib rotator service daemon