posix Archives - IT Nursery

POSIX environments provide at least two ways of accessing files. There’s the standard system calls open(), read(), write(), and friends, but there’s also ...

May 15, 2022
0 Comments

What is /dev/null 2>&1?

I found this piece of code in /etc/cron.daily/apf #!/bin/bash /etc/apf/apf -f >> /dev/null 2>&1 /etc/apf/apf -s >> /dev/null 2>&1 It’s flushing and reloading ...

May 11, 2022
0 Comments

How do I execute a command and get the output of the command within C++ using POSIX?

I am looking for a way to get the output of a command when it is run from within a C++ program. I ...

May 1, 2022
0 Comments

How to kill all processes with a given partial name? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question ...

April 24, 2022
0 Comments

What is the meaning of “POSIX”?

What is POSIX? I have read the Wikipedia article and I read it every time I encounter the term. The fact is that ...

April 15, 2022
0 Comments

How to echo shell commands as they are executed

In a shell script, how do I echo all shell commands called and expand any variable names? For example, given the following line: ...

April 14, 2022
0 Comments

How can I check if a directory exists in a Bash shell script?

What command can be used to check if a directory exists or not, within a Bash shell script? 3 36

April 9, 2022
0 Comments