Append an output from program to a file bash script -

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I have to implement several types of programs in the shell shell like the following: 

  For $ I {1..10}; Do the time /aout;

Each recurrence generates the following output: 

  start the actual 0m1.112s user 0m1.112s sys 0m0.00s

I need to add a real part to this output (generated on each iteration), that is, 0m1.112s (extracted from the actual 0m1.112s) in some output files. The final output may look like this: 

  1.112s, 1.113s, 1.112s, 1.113s, 1.112s

I have created a program This and it works perfectly but the problem is that it creates some overhead and produces a little more variety in the time of execution.

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will do the following: 

 for  ((i = 0; i < 10; i ++)) {time ./a.out> / Dev / null}} 2> And did it 1 Awk '{ORS = ","; Then outputs ($ 1 == "actual") print for $ 2} '
  • ; & Amp; 1 will send stdout to stdr
  • & gt; / Dev / null will leave the actual output, if any, because you are only interested in the output of time
  • if the first column "real , to set the output separator from " with ORS so that all outputs are in a single row.

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