To search a file for a simple text string: grep copying help . This searches the file help for the string copying and displays each line on your terminal. To search a file using regular expression: grep -n '[dD]on\'t' tasks . ... Double quotes are used to quote the single quote in dDon't. To use the output of another command as input to the grep command: ls -l | grep '^d........x' . ... To redirect the results of a search to a file: grep Smith /etc/passwd > smurffs . ...

... Abstract Lex (scan) a quoted string. ... Brief_I/O Variable I/O Description -------- --- -------------------------------------------------- string I String to be scanned. qchar I Quote delimiter character. first I Character position at which to start scanning. last O Character position of end of token. nchar O Number of characters in token. ... Case *is* significant in qchar. first is the character position at which the routine is to start scanning a quoted string token. ... Link to routine source ....

... Input via keyin format is of the form keyword = value . ... The input keywords are not case sensitive. Most of the values required by SCHED, except for file names in case sensitive systems like unix, are also not case sensitive. keywords are, in all cases, limited to 8 characters in length. ... Keyin values can be mathematical statements in parenthesis; for example, dur = 15 rep = (4*5) This example shows the most likely way in which this capability might be used in SCHED input files. ...

http ://hea-www.harvard.edu/AstroStat/slog/ 2007 / quote -of-the- week -may-29- 2007 / Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders Fri, 01 Jun 2012 18:47:52 +0000 hourly 1 http ://wordpress.org/?v=3.4 http ://hea-www.harvard.edu/AstroStat/slog/ 2007 / quote -of-the- week -may-29- 2007 /comment-page-1/#comment-40 Jeff Scargle Fri, 29 Jun ... I would go further than VLK and claim that the Weinberg quote contains great advice. ...

... spectrum . ffit . ... grids . ... These commands read in a grid of model spectra. ... Values for the parameters are taken from the input models themselves, to avoid mixups. The syntax of the command arguments is precise. model{ . ... If there is only one spectrum to fit, one should set default parameters for the secondary which lie within the model grid, with <L_2/L> being a very small value. ... The output is saved in a file <file.fit> , where <file> was the name of the spectrum being fitted. ...

SAS home . SAS Watchout items . ... This thread contains a step-by-step recipe to extract a light curve of a point-like source for all the X-ray cameras, subtracting the background and correcting for exposure loses. ... The SAS task barycen performs this correction. ... If the following files are available: a) RGS event list; b) RGS source list, a call to the task performing light curve extraction, correction and background subtraction rgslccorr allows a user to create the light curve. ...

... Apache HTTP Server Version 2.2 . ... Allows the setting of environment variables based on characteristics of the request . ... setenvif_module . ... The mod_setenvif module allows you to set internal environment variables according to whether different aspects of the request match regular expressions you specify. ... Environment Variables in Apache . ... The BrowserMatch is a special cases of the SetEnvIf directive that sets environment variables conditional on the User-Agent HTTP request header. ...

Underdetermined sets is a new type of data structures (terms) developed in Actor Prolog . ... The point is that an underdetermined set can include some indefinite rest (a tail) like a list in usual Prolog . At the same time, the order of elements of an underdetermined set can be arbitrary one and it does not affect results of unification of underdetermined sets. Moreover, Actor Prolog guarantees that a rest of an underdetermined set never contains elements that are explicitly given in the set. ...