What is the recommended way of allocating memory for a typed memory view?
The Cython documentation on typed memory views list three ways of assigning to a typed memory view:
buffer
Completely buffer command output before piping to another command?
Is there a way to only execute a command after another is done without a temp file?
I have one longer running command and another command that formats the output and sends it to a HTTP server using curl.
If i just execute commandA | commandB, commandB will start curl, connect to the server and start sending data. Because commandAtakes so long, the HTTP server will timeout.
I can do what I want with commandA > /tmp/file && commandB </tmp/file && rm -f /tmp/file
Is there a command like “tee” that limits the file size and treats the output file like a fixed-size queue?
Does there exist a command where one can do something like:
What exactly is scrollback and scrollback buffer?
What are “scrollback” and “scrollback buffer” in programs like bash and screen, and how do they relate to the tty, the programs being run, and stdin/ stdout/ stderr?
Is there truth to the philosophy that you should sync; sync; sync; sync?
When I was first introduced to Linux, working at Cisco Systems in 2000, I was taught the merits of the sync command, used to flush buffers to disk to prevent filesystem corruption / data loss. I was told not only by coworkers there, but by friends in college to always run sync “a few” or “a bunch” of times, that is, maybe 5 – 10 times, instead of just once.
Daemontools multilog loses log line time information. How to fix it?
I am using daemontools to monitor a process and its output log. I am using multilog to write the logs to disk.
A program that could buffer stdin or file
Aside from using a temporary file to help, is there a way/program could buffer input from stdin but does not output the contents until getting the EOF. I don’t want to use a shell variable either(e.g. buffer=$(cat)).
How to reduce Linux’ write buffer for removable devices?
When writing content to removable devices on Linux (USB sticks/HDDs, SD cards, etc), I often see incredible write speeds in the first few seconds, sometimes in the order of GB/s (filling of the write buffer) followed by several minutes of quiet (buffer actually being written to the device).
piped command after grep not working
I want to monitor a file. So I have tailed a file using below command, to execute a script per line.
Restrict size of buffer cache in Linux
Is there a way to tell the Linux kernel to only use a certain percentage of memory for the buffer cache? I know /proc/sys/vm/drop_caches can be used to clear the cache temporarily, but is there any permanent setting that prevents it from growing to more than e.g. 50% of main memory?