https://gunkies.org/index.php?action=history&feed=atom&title=32v_1m_at 2026-05-10T19:01:18Z Revision history for this page on the wiki MediaWiki 1.30.1 https://gunkies.org/w/index.php?title=32v_1m_at&diff=6921&oldid=prev 2009-10-26T12:35:27Z

<p>New page: AT(1) UNIX Programmer&#039;s Manual AT(1) == NAME == at - execute commands at a later time == SYNOPSIS == at time [ day ] [ file ] == DESCRIPTION == ...</p> <p><b>New page</b></p><div>AT(1) UNIX Programmer's Manual AT(1)<br /> <br /> <br /> <br /> == NAME ==<br /> at - execute commands at a later time<br /> <br /> == SYNOPSIS ==<br /> at time [ day ] [ file ]<br /> <br /> == DESCRIPTION ==<br /> _A_t squirrels away a copy of the named _f_i_l_e (standard input<br /> default) to be used as input to _s_h(1) at a specified later<br /> time. A _c_d(1) command to the current directory is inserted<br /> at the beginning, followed by assignments to all environment<br /> variables. When the script is run, it uses the user and<br /> group ID of the creator of the copy file.<br /> <br /> The _t_i_m_e is 1 to 4 digits, with an optional following `A',<br /> `P', `N' or `M' for AM, PM, noon or midnight. One and two<br /> digit numbers are taken to be hours, three and four digits<br /> to be hours and minutes. If no letters follow the digits, a<br /> 24 hour clock time is understood.<br /> <br /> The optional _d_a_y is either (1) a month name followed by a<br /> day number, or (2) a day of the week; if the word `week'<br /> follows invocation is moved seven days further off. Names<br /> of months and days may be recognizably truncated. Examples<br /> of legitimate commands are<br /> <br /> at 8am jan 24<br /> at 1530 fr week<br /> <br /> _A_t programs are executed by periodic execution of the com-<br /> mand /_u_s_r/_l_i_b/_a_t_r_u_n from _c_r_o_n(1). The granularity of _a_t<br /> depends upon how often _a_t_r_u_n is executed.<br /> <br /> Standard output or error output is lost unless redirected.<br /> <br /> == FILES ==<br /> /usr/spool/at/yy.ddd.hhhh.uu<br /> activity to be performed at hour _h_h_h_h of year day _d_d_d of<br /> year _y_y. _u_u is a unique number.<br /> /usr/spool/at/lasttimedone contains _h_h_h_h for last hour of<br /> activity.<br /> /usr/spool/at/past directory of activities now in progress<br /> /usr/lib/atrun program that executes activities that are due<br /> pwd(1)<br /> <br /> == SEE ALSO ==<br /> [[32v 1m calendar|calendar(1)]], [[32v 1m cron|cron(1)]]<br /> <br /> == DIAGNOSTICS ==<br /> Complains about various syntax errors and times out of<br /> range.<br /> <br /> <br /> == BUGS ==<br /> Due to the granularity of the execution of /_u_s_r/_l_i_b/_a_t_r_u_n,<br /> there may be bugs in scheduling things almost exactly 24<br /> hours into the future.<br /> <br /> [[Category:32v man section 1]]</div>

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