We can change the period by modifying the value after the -n option. strict: A boolean indicating whether the path must be matched exactly. viewports: A logical value indicating whether to search for viewports. grobs: A logical value indicating whether to search for grobs. The above output will refresh every second. a gPath or a vpPath or a character value that could be interpreted as either. Model name : Intel(R) Core(TM) i7-7500U CPU 2.70GHz If we want to monitor the speed for some period of time, we can use the watch command: $ watch -n1 "grep Hz /proc/cpuinfo"Įvery 1.0s: grep Hz /proc/cpuinfo baeldung: Sun Jun 26 16:21:32 2022 grep(value TRUE) returns a character vector containing the selected elements of x (after coercion, preserving names but no other attributes). In this example, the clock rates are the same for both cores. stringr functions start with str prefix base R string functions have no consistent naming. ![]() To search for the word phoenix in all files in the current directory, append -w to the grep command. ![]() So, it means that there are two cores in this particular system that gives the above output. Example 2: Passing ignore.case and value parameters x <- c('BMW', 'audi', 'MERCEDEZ', 'bmw') grep('mercedez', x, ignore.case TRUE, value TRUE) grep('B', x, ignore.case TRUE, value TRUE) grep('audi', x, ignore.case FALSE, value FALSE) grep('BMW', x, ignore. grep(pattern, x, value TRUE), strsubset(x, pattern). Grep allows you to find and print the results for whole words only. In this case, these values are 2.70 GHz and 2904.004 MHz, respectively.įurthermore, the reason there are two outputs is that this file displays CPU information for each processor core. Model name : Intel(R) Core(TM) i7-7500U CPU 2.70GHzĪs we mentioned previously, there are base and real-time clock speeds.
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