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* eshell/em-unix.el (eshell/su, eshell/sudo): New defuns,

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providing a Tramp related implementation of "su" and "sudo".
(eshell-unix-initialize): Add "su" and "sudo".
This commit is contained in:
Michael Albinus 2009-11-27 16:29:03 +00:00
parent c525b3f2d2
commit 3ba30eb837
2 changed files with 67 additions and 1 deletions
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62
lisp/eshell/em-unix.el
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@ -145,7 +145,7 @@ Otherwise, Emacs will attempt to use rsh to invoke du on the remote machine."
(make-local-variable 'eshell-complex-commands)
(setq eshell-complex-commands
(append '("grep" "egrep" "fgrep" "agrep" "glimpse" "locate"
"cat" "time" "cp" "mv" "make" "du" "diff")
"cat" "time" "cp" "mv" "make" "du" "diff" "su" "sudo")
eshell-complex-commands)))
(defalias 'eshell/date 'current-time-string)
@ -1041,6 +1041,66 @@ Show wall-clock time elapsed during execution of COMMAND.")
(put 'eshell/occur 'eshell-no-numeric-conversions t)
;; Pacify the byte-compiler.
(defvar tramp-default-proxies-alist)
(defun eshell/su (&rest args)
"Alias \"su\" to call Tramp."
(let ((-login (member "-" args)) ;; not handled by `eshell-eval-using-options'
login)
(eshell-eval-using-options
"sudo" args
'((?h "help" nil nil "show this usage screen")
(?l "login" nil login "provide a login environment")
(? nil nil login "provide a login environment")
:usage "[- | -l | --login] [USER]
Become another USER during a login session.")
(throw 'eshell-replace-command
(let ((user "root")
(host (or (file-remote-p default-directory 'host)
"localhost"))
(dir (or (file-remote-p default-directory 'localname)
default-directory)))
(if (or login -login) (setq dir "~/"))
(if (stringp (car args)) (setq user (car args)))
(if (and (file-remote-p default-directory)
(not (string-equal
user (file-remote-p default-directory 'user))))
(add-to-list
'tramp-default-proxies-alist
(list host user (file-remote-p default-directory))))
(eshell-parse-command
"eshell/cd" (list (format "/su:%s@%s:%s" user host dir))))))))
(put 'eshell/su 'eshell-no-numeric-conversions t)
(defun eshell/sudo (&rest args)
"Alias \"sudo\" to call Tramp."
(let (user)
(eshell-eval-using-options
"sudo" args
'((?h "help" nil nil "show this usage screen")
(?u "user" t user "execute a command as another USER")
:show-usage
:usage "[(-u | --user) USER] COMMAND
Execute a COMMAND as the superuser or another USER.")
(throw 'eshell-external
(let* ((user (or user "root"))
(host (or (file-remote-p default-directory 'host)
"localhost"))
(dir (or (file-remote-p default-directory 'localname)
default-directory))
(default-directory (format "/sudo:%s@%s:%s" user host dir)))
(if (and (file-remote-p default-directory)
(not (string-equal
user (file-remote-p default-directory 'user))))
(add-to-list
'tramp-default-proxies-alist
(list host user (file-remote-p default-directory))))
(eshell-named-command (car args) (cdr args)))))))
(put 'eshell/sudo 'eshell-no-numeric-conversions t)
(provide 'em-unix)
;; Local Variables: