Printf

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Directory size script under statistics path in Linux

Linux statistics in the directory under the size of the script is as follows: Save into total.sh, and then use total.sh absolute path, you can count the size of the directory under the path code: #!/bin/shdu $--max-depth=1 | Sort-n|awk ' {printf%7.2fm---->%s\n, $1/http://www.aliyun.com/zixun/aggregation/...

Remove the suffix name of all. En in Apache's manua L directory

Sometimes we need to look up the suffix name of the. En and remove all the suffix names from the Apache Manua L directory, and we can do the following: Go to the manual directory to execute the following code: Find./-regex. *\.en|awk-f. ' { printf "mv%s.%s.%s.%s%s.%s.%s\n", $1,$2,$3,$4,$1,$2,$3} ' |sh

Several methods and routines of C + + timing

1. Use the clock () function header file: Clock () function, return "from the program to call the function, CPU clock number of ticks (clock tick)" per 1ms, count value +1 precision: 1 milliseconds #include #include int main () {clock_t start,end;//typedef long clock_t start = Clo ...

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