Why does process substitution result in a file called /dev/fd/63 which is a pipe?
I am trying to understand named pipes in the context of this particular example.
open-files
How can same fd in different processes point to the same file?
Say I have process 1 and process 2. Both have a file descriptor corresponding to the integer 4.
How do open files behave on linux systems?
I just renamed a log file to “foo.log.old”, and assumed that the application will start writing a new logfile at “foo.log”. I was surprised to discover that it tracked the logfile to its new name, and kept appending lines to “foo.log.old”.
File permissions and saving
Let’s say you open a file on which you have write permission.
Meanwhile you change permissions and remove write permission while you still have the file open in some editor.
ulimit: difference between hard and soft limits
What is the difference between hard and soft limits in ulimit?
How do I “cat and follow” a file?
A file is being sequentially downloaded by wget.
How can I access a deleted open file on Linux (output of a running crontab task)?
I have an hourly hour-long crontab job running with some mtr (traceroute) output every 10 minutes (that is going to go for over an hour prior to it being emailed back to me), and I want to see the current progress thus far.
Why is number of open files limited in Linux?
Right now, I know how to:
How do I tell a script to wait for a process to start accepting requests on a port?
I need a command that will wait for a process to start accepting requests on a specific port.
How to list the open file descriptors (and the files they refer to) in my current bash session
I am running in an interactive bash session. I have created some file descriptors, using exec, and I would like to list what is the current status of my bash session.