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Eshell Introduction Emacs 21.1 comes with a powerful package, eshell. This is a very powerful package. It should have been included earlier. I have been suffering all these years without a proper shell. The only short coming is, eshell does not support input redirection. Although it is great, I still have to write some lisp codes to fix a few things that borther me. EShell Environment Settings You may type alt-x eshell to invoke eshell. To set the path and environment correctly, you may want to put this into your .emacs file.
(add-hook 'eshell-mode-hook
'(lambda nil
(eshell/export "EPOCROOT=\\Paragon\\")
(let ((path))
(setq path ".;c:/program files/microsoft visual studio/vb98/")
(setq path (concat path ";d:/program files/microsoft visual studio/vc98/bin"))
(setenv "PATH" path))
(local-set-key "\C-u" 'eshell-kill-input))
)
Running Perl Scripts in EShell Eshell does not recognize perl script extensions. So I have to do this.
;; To make eshell understand .pl perl extensions.
(add-hook 'eshell-named-command-hook 'n-eshell-exec-perl)
(defun n-eshell-exec-perl (command args)
"04Dec2001 - sailor, to make eshell understand perl scripts."
(if (string-match "^.+\.pl[ \t]*" command)
(progn
(setq args (cons command args))
(setq args (cons "-S" args))
(throw 'eshell-replace-command
(eshell-parse-command "perl" args))
)
)
)
Clearing EShell Buffer When the eshell buffer gets too large, you can simple type the command clear within the eshell to clear the entire buffer.
(defun eshell/clear ()
"04Dec2001 - sailor, to clear the eshell buffer."
(interactive)
(let ((inhibit-read-only t))
(erase-buffer)))
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