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secure shell client int(expr) Truncates to integer. log(expr) The natural logarithm function. rand() Returns a random number between 0 and 1. sin(expr) Returns the sine of expr, which is in radi- ans. sqrt(expr) The square root function.
secure shell client srand([expr]) Uses expr as a new seed for the random num- ber generator. If no expr is provided, the time of day is used. The return value is the previous seed for the random number gen- erator. String Functions Gawk has the following built-in string functions: gensub(r, s, h [, t]) Search the target string t for matches of the regular expression r. If h is a string beginning with g or G, then replace all matches of r with s.
secure shell client Otherwise, h is a number indicating which match of r to replace. If t is not sup- plied, $0 is used instead. Within the replacement text s, the sequence \n, where n is a digit from 1 to 9, may be used to indi- cate just the text that matched the n'th parenthesized subexpres- sion. The sequence \0 represents the entire matched text, as does the character &. Unlike sub() and gsub(), the modified string is returned as the result of the function, and the original target string is not changed.
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