04-16-2008
script to convert epoch into human-readable
This is what I have to start out with
more file
1208217600
1208131200
1193806800
I want to convert the epoch column into a human-readable format. My file has hundreds of these epoch times that I want to loop through and convert. (The epoch time is really the last column of the line)
This is what I am trying
cat file |while read EPOCH
do
READABLE=`gawk 'BEGIN{print strftime("%c", $EPOCH )}'` # not working
READABLE=`gawk 'BEGIN{print strftime("%c",1144172897)}'` # works
echo $READABLE
done
why does the second line work when I hard code the epoch time in?
and the first line where I am reading in the variable not work?
reading about the syntax of the strftime
strftime([format [,timestamp]])
evidently timestamp has to be a number and not a variable
any ideas?
I don't have perl on this box but I do have nawk and awk and sed
Thanks
David
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LEARN ABOUT PHP
fann_train_epoch
FANN_TRAIN_EPOCH(3) 1 FANN_TRAIN_EPOCH(3)
fann_train_epoch - Train one epoch with a set of training data
SYNOPSIS
float fann_train_epoch (resource $ann, resource $data)
DESCRIPTION
Train one epoch with the training data stored in data. One epoch is where all of the training data is considered exactly once.
This function returns the MSE error as it is calculated either before or during the actual training. This is not the actual MSE after the
training epoch, but since calculating this will require to go through the entire training set once more. It is more than adequate to use
this value during training.
The training algorithm used by this function is chosen by fann_set_training_algorithm(3) function.
PARAMETERS
o $ann
-Neural network resource.
o $data
-Neural network training data resource.
RETURN VALUES
The MSE, or FALSE on error.
SEE ALSO
fann_train_on_data(3), fann_test_data(3), fann_get_MSE(3), fann_set_training_algorithm(3).
PHP Documentation Group FANN_TRAIN_EPOCH(3)