New posts in Posix

How do I use grep to find a text string in files in sub folders of a parent folder without -r switch

Which is the most portable of sed, awk, perl and sh?

Is the shell permitted to optimize out useless terminating commands?

shellcheck is advising not to use basename: why?

How does umask affect ACLs?

difference between "function foo() {}" and "foo() {}"

linux command to check POSIX message queue

What would break if the C locale was UTF-8 instead of ASCII?

sed on OSX insert at a certain line

What is the point of the `cd` external command?