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head/contrib/ntp/sntp/sntp.html
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| <h2 class="unnumbered">Simple Network Time Protocol User Manual</h2> | <h2 class="unnumbered">Simple Network Time Protocol User Manual</h2> | ||||
| <p>This document describes the use of the NTP Project's <code>sntp</code> program, | <p>This document describes the use of the NTP Project's <code>sntp</code> program, | ||||
| that can be used to query a Network Time Protocol (NTP) server and | that can be used to query a Network Time Protocol (NTP) server and | ||||
| display the time offset of the system clock relative to the server | display the time offset of the system clock relative to the server | ||||
| clock. Run as root, it can correct the system clock to this offset as | clock. Run as root, it can correct the system clock to this offset as | ||||
| well. It can be run as an interactive command or from a cron job. | well. It can be run as an interactive command or from a cron job. | ||||
| <p>This document applies to version 4.2.8p4 of <code>sntp</code>. | <p>This document applies to version 4.2.8p5 of <code>sntp</code>. | ||||
| <p>The program implements the SNTP protocol as defined by RFC 5905, the NTPv4 | <p>The program implements the SNTP protocol as defined by RFC 5905, the NTPv4 | ||||
| IETF specification. | IETF specification. | ||||
| <div class="shortcontents"> | <div class="shortcontents"> | ||||
| <h2>Short Contents</h2> | <h2>Short Contents</h2> | ||||
| <ul> | <ul> | ||||
| <a href="#Top">Simple Network Time Protocol User Manual</a> | <a href="#Top">Simple Network Time Protocol User Manual</a> | ||||
| ▲ Show 20 Lines • Show All 123 Lines • ▼ Show 20 Lines | This is the automatically generated usage text for sntp. | ||||
| <p>The text printed is the same whether selected with the <code>help</code> option | <p>The text printed is the same whether selected with the <code>help</code> option | ||||
| (<span class="option">--help</span>) or the <code>more-help</code> option (<span class="option">--more-help</span>). <code>more-help</code> will print | (<span class="option">--help</span>) or the <code>more-help</code> option (<span class="option">--more-help</span>). <code>more-help</code> will print | ||||
| the usage text by passing it through a pager program. | the usage text by passing it through a pager program. | ||||
| <code>more-help</code> is disabled on platforms without a working | <code>more-help</code> is disabled on platforms without a working | ||||
| <code>fork(2)</code> function. The <code>PAGER</code> environment variable is | <code>fork(2)</code> function. The <code>PAGER</code> environment variable is | ||||
| used to select the program, defaulting to <span class="file">more</span>. Both will exit | used to select the program, defaulting to <span class="file">more</span>. Both will exit | ||||
| with a status code of 0. | with a status code of 0. | ||||
| <pre class="example">sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p4 | <pre class="example">sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p5 | ||||
| Usage: sntp [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \ | Usage: sntp [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \ | ||||
| [ hostname-or-IP ...] | [ hostname-or-IP ...] | ||||
| Flg Arg Option-Name Description | Flg Arg Option-Name Description | ||||
| -4 no ipv4 Force IPv4 DNS name resolution | -4 no ipv4 Force IPv4 DNS name resolution | ||||
| - prohibits the option 'ipv6' | - prohibits the option 'ipv6' | ||||
| -6 no ipv6 Force IPv6 DNS name resolution | -6 no ipv6 Force IPv6 DNS name resolution | ||||
| - prohibits the option 'ipv4' | - prohibits the option 'ipv4' | ||||
| -a Num authentication Enable authentication with the key auth-keynumber | -a Num authentication Enable authentication with the key auth-keynumber | ||||
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