I am playing with the following two code snippets What the above code wants to do is to read a byte from the user keyboard and then print it to stdout. The confusing thing is two snippets have different behaviors: I am sorry about the format of the above code, I don’t know how to place the prompt at the
Tag: buffer
Using unbuffered pipe as “dummy” file output
I’ve been dealing with a weird issue that I can’t find a way to solve. My situation is as follows. I have an application in python called “app1”, that requires a file for outputting the results of it’s execution. I have a secondary application, called “app2”; a binary, that gets the input from stdin. I want to pipe what “app1”
Units of tx_queue & rx_queue in /proc/net/tcp
On a Linux 2.6.32, i’m looking at /proc/net/tcp and wondering what is the unit of tx_queue and rx_queue. I can’t find this information about receive-queue and transmit-queue in https://www.kernel.org/doc/Documentation/networking/proc_net_tcp.txt Nor in man 5 proc which shows only: The “tx_queue” and “rx_queue” are the outgoing and incoming data queue in terms of kernel memory usage. Is it bytes? or number of
How do I grep or sed in a continuous stream of characters?
I have a program that output some text and then a continuous stream of characters: I want to exit this program as soon as “A” is seen in the output and I tried: However, it seems like grep doesn’t see the “A”s until the perl program exits. I also tried with sed with no luck; Any ideas how I can