A basic linux shell
Unlike most shells, arguments are not split on space, but on $, so the
command ls -alh --color=auto in bash is instead written ls $-alh $--color=auto. This is to avoid the "space issue" that plagues bash.
It is possible that this will change in later versions.
!infile works like <infile in Bourne shell (redirect stdin)
@outfile works like >outfile in Bourne shell (redirect stdout)
@# works like >&2 in Bourne shell (redirect stdout to stderr)
#errfile works like 2>outfile in Bourne shell (redirect stderr)
#@ works like 2>&1 in Bourne shell (redirect stderr to stdout)
. @outfile $echo $Hello world!
. cat $outfile
Hello world!
If you redirect two streams in one command you will need to put a space between them.
@/dev/null $#@ $command-without-stdout-and-stderr
You can add and remove aliases with the alias and unalias commands
. ls
libprompt lsh Makefile README.md src
. alias $ls $ls $-a
. ls
. .. .git .gitignore .gitmodules libprompt lsh Makefile README.md src
. alias
ls: 'ls $-a
. unalias $ls
. alias
. ls
libprompt lsh Makefile README.md src
path is used like $PATH in Bourne shell. It's a set of locations where the shell looks for programs to execute. Each folder in path is tried in ascending order until a program is found.
path displays the current path.
. path
0: /usr/local/bin
1: /usr/bin
2: /bin
If you want to know which program that will be run by a given command, you type path program.
. path $echo
echo: /bin/echo