In bash you can use exec -a and in zsh you can alternatively also set ARGV0 to execute a program with a certain zeroth argument but is there also a POSIX way of doing so?
There are common pairings of escape sequences to ASCII control characters, such as Ctrl-C and Ctrl-Z to ETX and SUB, respectively.
So I’ve been using ‘sed’ on linux for a while, but have had a bit of difficulty trying to use it on OSX since ‘POSIX sed’ and ‘GNU sed’ have so many little differences. Currently I’m struggling with how to insert a line of text after a certain line number. (in this case, line 4)
What is the difference between absolute / canonical / relative paths?
TL;DR: Why does POSIX brace group need spaces after { reserved word but subshell doesn’t after reserved word (?
The system may provide non-standard extensions. These are features not required by POSIX.1-2008 and may include, but are not limited to: […] Additional character special files with special properties (for example, /dev/stdin, /dev/stdout, and /dev/stderr)
In a POSIX sh, or in the Bourne shell (as in Solaris 10’s /bin/sh), is it possible to have something like:
See the following examples and their outputs in POSIX shells:
Preface: I understand the difference between -exec {} ; & -exec {} +. I also don’t have a problem as such, I am just curious about the semantics of find.