7 replies to this topic

[lzo]

I've searched and found some tail functions but they seem to be from like six or seven years ago, I don't know if anything has changed which is why I`m asking


I need to kill a process in response to something -- as soon as "The batch process has completed." appears in c:\grep\parser.log, kill the process

do I use

IfWinExist, Analytical6 - Done ; assuming that is the full window title 
    WinKill

and how to implement the tail -f equivalent? Can someone point me in a direction?


Thanks, very much appreciate

[engunneer]

I'd start with hugoV's TF library. the TF_Tail function should do what you want and is current

[lzo]

I'd start with hugoV's TF library. the TF_Tail function should do what you want and is current

Found it, but how do I make it monitor the file and automatically check the last line when the file changes?

[engunneer]

you have to write your own loop for that. A better option might be SetTimer, which can run a label periodically. Get the tail of the file every 100ms, and see if it contains what you look for.

[guest3456]

i dont know about hugovs library but i reposted a tail function i found on the forums here:

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edit/
just looked at hugov's library and it seems to wrap the built in ahk commands which keeps the whole file in memory as lazlo notes:

The point of this 3.5 years old thread was to get the last line of a text file, without keeping the whole file in memory. Even if the file fits to the RAM, the memory usage gets large, which may cause other applications to slow down.

During the last three years we learned how to seek and read only portions of the file, so there are much faster methods for huge files.

[guest3456]

(tf_tail has a number of other options for flexibility and is not intended to be fastest or continuously monitor files as such. It does not hold the file in memory but does read it in its entirety each time you call it which could be problematic for large files or rapidly growing files)

yeah i'm pretty sure thats what lazlo meant. when you have to read the entire file, the variable takes up memory

[lzo]

I want to constantly read new line on file, then check if a string (not regex, hopefully.. i dont know how to deal with regex) exist in it, and if so, run a command (like "batch is complete" in full line of "8:41:55p ! Batch is complete in 300s.")

I don't do programming before and kind of find this hard to follow, sorry..