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- obsolete
- irst table lists syntax that is tolerated by Bash but has few if any legitimate uses. These features ex... icially, it is not considered deprecated by Bash, but I highly discourage it. It conflicts with the lis... fied by POSIX (unless otherwise specified below), but has been superseded by superior alternatives (eit... Korn shell arrays such as Bash. They are a vital but non-standard feature for writing clean, safe scri
- positional-parameters
- e **ideal** case it's the pathname of the script, but since this gets set on invocation, the invoking p... ho "$1" shift done </code> Not very stylish, but usable. The ''numargs'' variable is used to store... similar to the first example (the ''for'' loop), but it doesn't test for reaching ''$#''. It shifts an... echo "$1" shift done </code> Looks nice, but has the disadvantage of stopping when ''$1'' is e
- quoting
- icuar this means that ''"\$"'' will become ''$'', but ''"\x"'' will become ''\x''. ===== Strong quoti... nowiki>$'...'</nowiki>'' syntax comes from ksh93, but is portable to most modern shells including pdksh
- redirection
- " This won't be expanded: $PATH EOF </code> Last but not least, if the redirection operator ''<nowiki>... end-of-here-document tag. The reason is unknown, but it seems to be done on purpose. Bash 4 introduced