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I tried to do it myself but I failed. I don't understand this I/O Model in lua.
I need this script to determine whether my server is still running or not. As a result I can restart automatically my server with another script.
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Scripts Text file modification
Text file modification
14 replies
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I tried to do it myself but I failed. I don't understand this I/O Model in lua.
I need this script to determine whether my server is still running or not. As a result I can restart automatically my server with another script.
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function updateUptimeFile(path)
local path = path or "sys/lua/uptime.txt"
local file = io.open(path, "w")
file:write(os.date("%H:%M:%S"))
file:close()
end
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local i = 0;
local temp = "a";
addhook("second", "test")
function test()
i = i + 1;
if a > 100 then a = 1; end
if i%10 == 0 then
local file = io.open("path/to/file", "w");
if (temp == "a") then temp = "b";
else temp = "a";
end
file:write(temp);
file:close();
end
end
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-- Use locals and upvalues, it's faster
local file = io.open("sys/lua/file.txt", "rb+")
local write_a = false
function updateTextFile()
-- Start writing on beginning of file
file:seek("set")
-- Write either "a" or "b"
file:write(write_a and "a" or "b")
-- Apply the changes
file:flush()
-- Flip the switch to write either "a" or "b" in next write
write_a = not(write_a)
end
-- Finally call timer, set count to 0 so it's called infinite times.
timer(10000, "updateTextFile", "", 0)
local file = io.open("sys/lua/file.txt", "rb+") should be:
local file = io.open("sys/lua/file.txt", "wb+")
MikuAuahDark has written1
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-- Use locals and upvalues, it's faster
local file = io.open("sys/lua/file.txt", "wb+")
local write_a = false
function updateTextFile()
-- Start writing on beginning of file
file:seek("set")
-- Write either "a" or "b"
file:write(write_a and "a" or "b")
-- Apply the changes
file:flush()
-- Flip the switch to write either "a" or "b" in next write
write_a = not(write_a)
end
-- Finally call timer, set count to 0 so it's called infinite times.
timer(10000, "updateTextFile", "", 0)
Can someone edit this code that it closes the text document after writing into it, please? I may have some problems if it stays open with another bash script.
Thanks in advance
edited 2×, last 27.04.17 09:42:52 pm
file:close()at the end of the
updateTextFile()function which is after 13 line.
I get this error by using it:
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LUA ERROR: sys/lua/server.lua:7: attempt to use a closed file
AtomKuh: That's because the file is opened once, then closed the first time updateTextFileis used. It is never opened afterwards.
Frankly the local
fileused as a variable for the whole block scope is shitty practice - even if it's faster. Faster does not always mean better.
Yates: Thanks, but do you have any idea to change it? The problem I have is that I want to check with the following bash script whether a text file is being edited or not:
Somehow it works on text files that I edit manually but not on the one that is being edited by this lua script
I wouldn't use a text file to check whether a server is offline. You can ping it to see if it's still responding or not.
Yates has written@ AtomKuh: That's because the file is opened once, then closed the first time
Frankly the local
AtomKuh: That's because the file is opened once, then closed the first time updateTextFileis used. It is never opened afterwards.
Frankly the local
fileused as a variable for the whole block scope is shitty practice - even if it's faster. Faster does not always mean better.
Say no more.
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local write_a = false
function updateTextFile()
-- Start writing on beginning of file
local file = io.open("sys/lua/file.txt", "wb+")
-- Write either "a" or "b"
file:write(write_a and "a" or "b")
-- Close the file. Will flush it automatically
file:close()
-- Flip the switch to write either "a" or "b" in next write
write_a = not(write_a)
end
timer(10000, "updateTextFile", "", 0)
Yates: I used nmap to ping my server when it was online but I dont know how to DDOS/take down my server for test purposes. Do you have any idea?@
MikuAuahDark: Thanks for editing the code 1