Epoch time

[Skywalker1957]

Hey! I'm trying to figure out a way of using awk to sort data off of a field that contains Epoch time. I'm trying to look at only the last 24 hours of log files, so I would need to take Epoch time minus 86400 and sort only those timestamps greater than the timestamp from the last 24 hours.

awk ' $1 > 1277400638 '

but how do I get at that number from within awk? I can calculate it and save it to a flat file in /tmp but how do I call it from within awk or if I put it in a variable, how do I call that environment variable from within awk?

Thanks for your help.

 

[PHV]

how do I call that environment variable from within awk
Simply like this:
export yourVariableHere=1277400638
awk '$1>ENVIRON["yourVariableHere"]'

You may also use the command-line variable assignment:
awk -v yourVariableHere=1277400638 '$1>yourVariableHere'

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[Skywalker1957]

That was beautiful. Thanks!