lsdistcc(1) [debian man page]
lsdistcc(1) General Commands Manual lsdistcc(1) NAME
lsdistcc - simple distcc server discovery SYNOPSIS
lsdistcc [OPTIONS] [FORMAT] lsdistcc [OPTIONS] host1 ... DESCRIPTION
lsdistcc autodetects listening distcc servers either by looking in DNS for hosts named according to a given FORMAT, or by checking the host names given on the command line. Hosts are considered good servers based solely on whether their name fits the format and whether they are listening on the right port (and optionally whether they respond when you send them a compile job). Scans for hosts named according to FORMAT (default is "distcc%d"; see printf(3)) and starting from 1, so hosts such as distcc1, distcc2, and so on. Stops after 7 seconds or the first host name that does not resolve. Prints the names of all such servers listening on distcc's port. If a list of host names is given in the command line, lsdistcc will only check those hosts. OPTIONS
--help Displays summary instructions -l Output latency in milliseconds after each hostname (not including DNS latency) -n Print IP address rather than name -x Append ,down to down hosts in host list -tTIMEOUT Set number of seconds to stop searching after [7] -hHTIMEOUT Set number of milliseconds before retrying gethostbyname [500] -cCTIMEOUT Set number of milliseconds before giving up on connect [900] (0 to inhibit connect) -kKTIMEOUT Set number of milliseconds before giving up on compile [1500] (0 to inhibit compile) -mBITS Set number of bits of address that must match first host found [0] -oOVERLAP Set number of extra DNS requests to send [1] -gDNSGAP Set number of missing DNS entries to tolerate [0] -rPORT Port to connect to [3632] -PPROTOCOL Protocol version to use (1-3) [1] -pCOMPILER Name of compiler to use [none] -d Append DNS domain name to format -v Verbose EXAMPLES
Scan for servers named distcc1, distcc2, ... that provide a compiler named gcc-4.6 and include their latencies in the output: $ lsdistcc -l -pgcc-4.6 Scan for a compiler named gcc-4.6 on the servers hosta, somehost, hostx, and hosty: $ lsdistcc -pgcc-4.6 hosta somehost hostx hosty To use the program in a build script, add the lines: DISTCC_HOSTS=`lsdistcc` export DISTCC_HOSTS before the line that invokes make. Or, in a Makefile, add the line: export DISTCC_HOSTS = $(shell lsdistcc) EXIT STATUS
The exit status is 0 if any servers were found, and 1 otherwise. Uses 'for i=1... sprintf(format, i)' to construct names of servers, stops after 7 seconds or at second server that doesn't resolve, prints the names of all such servers listening on distcc's port. Default format is distcc%d. SEE ALSO
distcc(1), distccd(1), printf(3) http://code.google.com/p/distcc/ AUTHOR
lsdistcc was written by Dan Kegel, Dongmin Zhang, and Manos Renieris. This manual page was written by Daniel Hartwig for the Debian project. 1 May 2012 lsdistcc(1)
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NSLOOKUP(1) BIND9 NSLOOKUP(1) NAME
nslookup - query Internet name servers interactively SYNOPSIS
nslookup [-option] [name | -] [server] DESCRIPTION
Nslookup is a program to query Internet domain name servers. Nslookup has two modes: interactive and non-interactive. Interactive mode allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain. Non-interactive mode is used to print just the name and requested information for a host or domain. ARGUMENTS
Interactive mode is entered in the following cases: 1. when no arguments are given (the default name server will be used) 2. when the first argument is a hyphen (-) and the second argument is the host name or Internet address of a name server. Non-interactive mode is used when the name or Internet address of the host to be looked up is given as the first argument. The optional second argument specifies the host name or address of a name server. Options can also be specified on the command line if they precede the arguments and are prefixed with a hyphen. For example, to change the default query type to host information, and the initial timeout to 10 seconds, type: nslookup -query=hinfo -timeout=10 The -version option causes nslookup to print the version number and immediately exits. INTERACTIVE COMMANDS
host [server] Look up information for host using the current default server or using server, if specified. If host is an Internet address and the query type is A or PTR, the name of the host is returned. If host is a name and does not have a trailing period, the search list is used to qualify the name. To look up a host not in the current domain, append a period to the name. server domain lserver domain Change the default server to domain; lserver uses the initial server to look up information about domain, while server uses the current default server. If an authoritative answer can't be found, the names of servers that might have the answer are returned. root not implemented finger not implemented ls not implemented view not implemented help not implemented ? not implemented exit Exits the program. set keyword[=value] This command is used to change state information that affects the lookups. Valid keywords are: all Prints the current values of the frequently used options to set. Information about the current default server and host is also printed. class=value Change the query class to one of: IN the Internet class CH the Chaos class HS the Hesiod class ANY wildcard The class specifies the protocol group of the information. (Default = IN; abbreviation = cl) [no]debug Turn on or off the display of the full response packet and any intermediate response packets when searching. (Default = nodebug; abbreviation = [no]deb) [no]d2 Turn debugging mode on or off. This displays more about what nslookup is doing. (Default = nod2) domain=name Sets the search list to name. [no]search If the lookup request contains at least one period but doesn't end with a trailing period, append the domain names in the domain search list to the request until an answer is received. (Default = search) port=value Change the default TCP/UDP name server port to value. (Default = 53; abbreviation = po) querytype=value type=value Change the type of the information query. (Default = A; abbreviations = q, ty) [no]recurse Tell the name server to query other servers if it does not have the information. (Default = recurse; abbreviation = [no]rec) ndots=number Set the number of dots (label separators) in a domain that will disable searching. Absolute names always stop searching. retry=number Set the number of retries to number. timeout=number Change the initial timeout interval for waiting for a reply to number seconds. [no]vc Always use a virtual circuit when sending requests to the server. (Default = novc) [no]fail Try the next nameserver if a nameserver responds with SERVFAIL or a referral (nofail) or terminate query (fail) on such a response. (Default = nofail) RETURN VALUES
nslookup returns with an exit status of 1 if any query failed, and 0 otherwise. macOS NOTICE The nslookup command does not use the host name and address resolution or the DNS query routing mechanisms used by other processes running on macOS. The results of name or address queries printed by nslookup may differ from those found by other processes that use the macOS native name and address resolution mechanisms. The results of DNS queries may also differ from queries that use the macOS DNS routing library. FILES
/etc/resolv.conf SEE ALSO
dig(1), host(1), named(8). AUTHOR
Internet Systems Consortium, Inc. COPYRIGHT
Copyright (C) 2004-2007, 2010, 2013-2016 Internet Systems Consortium, Inc. ("ISC") ISC
2018-05-25 NSLOOKUP(1)