bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714)

pages/common/rbash.md

@@ -1,20 +1,30 @@
 # rbash
 
-> Restricted Bash shell.
-> Similar to the `bash` shell with some restrictions like changing directories with `cd`, setting/unsetting of PATH, ENV variables and others.
+> Restricted Bash shell, equivalent to `bash --restricted`.
+> Does not permit changing the working directory, redirecting command output, or modifying environment variables, among other things.
+> See also `histexpand` for history expansion.
+> More information: <https://www.gnu.org/software/bash/manual/html_node/The-Restricted-Shell>.
 
-- Start rbash:
+- Start an interactive shell session:
 
 `rbash`
 
-- Execute a command:
+- Execute a command and then exit:
 
 `rbash -c "{{command}}"`
 
-- Run commands from a file:
+- Execute a script:
 
-`rbash {{file.sh}}`
+`rbash {{path/to/script.sh}}`
 
-- Print the version information of rbash:
+- Execute a script, printing each command before executing it:
 
-`rbash --version`
+`rbash -x {{path/to/script.sh}}`
+
+- Execute commands from a script, stopping at the first error:
+
+`rbash -e {{path/to/script.sh}}`
+
+- Read and execute commands from stdin:
+
+`rbash -s`