- arp2ethers
- arpalert
- arpd
- arpfetch
- arping
- arpon
- arpsend
- arpsnmp
- arptables
- arptables-restore
- arptables-save
- arpwatch
- asetkey
- ashunt
- askpass-fifo
- askPrinter
- asmtpd
- aspd
- aspell-autobuildhash
- asql
- astdb2bdb
- astdb2sqlite3
- asterisk
- astgenkey
- astraceroute
- astribank_allow
- astribank_hexload
- astribank_is_starting
- astribank_tool
- atalkd
- atd
- atheme-services
- atieventsd
- atmaddr
- atmarp
- atmarpd
- atmdiag
- atmdump
- atmel_fwl
- atmloop
- atmsigd
- atmtcp
- audisp-prelude
- audisp-remote
- audispd
- audispd-zos-remote
- auditctl
- auditd
- augenrules
- aulast
- aulastlog
- aureport
- ausearch
- ausyscall
- auth2db
- auth2db-alert
- auth2db-daemon
- authbind-helper
- authenumerate
- auth_krb5
- auto6to4
- autocptapes
- autodir
- autolog
- autologin
- automount
- automysqlbackup
- autopostgresqlbackup
- autosupport
- autotrust
MAN (8)
System administration commands and daemons