The djbwares toolset comprises these commands. See their manual pages for documentation.
multilog — read a sequence of lines from stdin and append selected lines to any number of logs
tai64n — put a precise timestamp on each line
tai64nlocal — convert precise TAI64N timestamps to a human-readable format
easter — print the date of Easter in one or more years
nowutc — print the current UTC time
yearcal — print a calendar for one or more years
clockadd — adjust the local UNIX clock, once
clockspeed — speed up or slow down the local clock, continuously
clockview — convert an adjustment to the local clock into human-readable form
date@ — UCSPI-TCP DAYTIME client
leapsecs — compile the leap seconds table used by the Bernstein TAI library
sntpclock — check a system's clock through NTP
taiclock — check a system's clock through TAICLOCK
taiclockd — announce the system's clock through TAICLOCK over a combined IPv4 and IPv6 stack
taiclock4d — announce the system's clock through TAICLOCK over IPv4
axfrdns — UCSPI-TCP general-purpose content DNS server
dnscache — a caching proxy DNS server
pickdns — obsolete, a special-purpose content DNS server using the UDP protocol
rbldns — an RBL source content DNS server using the UDP protocol
tinydns — a general-purpose content DNS server using the UDP protocol
walldns — an opaque content DNS server using the UDP protocol
axfr-get — perform an old-style "zone transfer" database replication
dnsfilter — filter a stream, looking up the domain names of any IP addresses
dnsip — look up the IP address(es) for a domain name
dnsipq — look up the IP address(es) for a domain name after applying name qualification
dnsmx — look up the mail exchanger names and weightings for a domain name
dnsname — look up the domain name for an IP address
dnsnamex — look up the domain name for an IP address
dnsq — query a content DNS server using the DNS protocol
dnsqr — query a proxy DNS server using the DNS protocol
dnsqrx — query a proxy DNS server using the DNS protocol
dnstrace — diagnose DNS query resolution problems
dnstracesort — translate the output of dnstrace into human-readable form
dnstxt — look up the text resource records for a domain name
host — query a proxy/content DNS server using the DNS protocol
tinydns-get — query a content DNS server by reading its database directly
pickdns-data — compile the database used by pickdns
rbldns-data — compile the database used by rbldns
tinydns-data — compile the database used by tinydns
tinydns-edit — modify a tinydns-data source file
axfrdns-conf — obsolete program for creating service definitions
dnscache-conf — obsolete program for creating service definitions
dnscache-showctl — dump a dnscache service configuration
pickdns-conf — obsolete program for creating service definitions
rbldns-conf — obsolete program for creating service definitions
tinydns-conf — obsolete program for creating service definitions
tinydns-showctl — dump a tinydns service configuration
walldns-conf — obsolete program for creating service definitions
addcr — insert a CR before each LF
delcr — delete any CR before an LF
fixcrio — insert missing CRs at the ends of lines in both input and output
mconnect-io — converse with a line-protocol network server
mconnect — connect to and converse with a line-protocol server over the network
rblsmtpd — wrap a UCSPI-TCP SMTP server with RBL checks
recordio — record the input and output of a program
tcpcat — general-purpose empty-request UCSPI-TCP client
tcpclient — create an outgoing TCP connection
tcprules — compile rules for tcpserver
tcprulescheck — check tcprules
tcpserver — accept incoming TCP connections
argv0 — run a program with a specified 0th argument.
envdir — run another program with environment modified according to files in a specified directory.
envuidgid — run another program with environment variables indicating a
nobuf — run a program such that the C library does not attempt stdio block buffering
setlock — run another program with a file locked
setuidgid — run another program under a specified account's uid and gid
softlimit — run another program with new resource limits.
background — run a program without waiting for it
fghack — an anti-backgrounding tool
pgrphack — run a program in a separate process group
supervise — start and monitors a service.
svc — control services monitored by supervise
svok — check whether supervise is running
svscan — start and monitor a collection of services
svstat — print the status of services monitored byi supervise
All publicfile servers can share a common content directory tree.
ftpd — UCSPI-TCP FTP server for static content
geminid — UCSPI-TCP GEMINI server for static content (requires UCSPI-SSL tools; also usable for simple static NICNAME and FINGER servers that do not look at system accounts)
gopherd — UCSPI-TCP GOPHER server for static content
httpd — UCSPI-TCP HTTP server for static content
configure — obsolete publicfile configuration program
ptybandage — wrap a transparent pseudo-terminal around a program
ptyget — allocate a pseudo-terminal
ptyio — feed input to a pseudo-terminal and print its output
ptyrun — wrap a pseudo-terminal around a program
ptyspawn — run a program on a pseudo-terminal
excloff — stop reserving a terminal device for exclusive use
exclon — start reserving a terminal device for exclusive use
ttydetach — run a program without a controlling terminal
random-ip — generate randomly-chosen IPv4 addresses