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lang-bash
lsmay not support the same long options as GNUls, but both should understand the options prescribed by POSIX for that utility. In terms of options, POSIX says what the minimum portable subset of options should be.cpandls), and the operating system (kernel, like Linux or FreeBSD). The man page you link to is for the GNU coreutils implementation ofls, quite a different piece of software than Bash (even though it's also under the GNU umbrella and also has long options). Also, while the FreeBSD utilities don't have too many long options, you can install and use the GNU utilities on a FreeBSD system.