Guida avanzata di scripting Bash - Portale Posta DMI

Esempio A-29. Rendere wget più semplice da usare
#!/bin/bash
# wgetter2.bash
Appendice A. Script aggiuntivi
# Author: Little Monster [monster@monstruum.co.uk]
# ==> Used in ABS Guide with permission of script author.
# ==> This script still needs debugging and fixups (exercise for reader).
# ==> It could also use some additional editing in the comments.
# This is wgetter2 --
#+ a Bash script to make wget a bit more friendly, and save typing.
# Carefully crafted by Little Monster.
# More or less complete on 02/02/2005.
# If you think this script can be improved,
#+ email me at: monster@monstruum.co.uk
# ==> and cc: to the author of the ABS Guide, please.
# This script is licenced under the GPL.
# You are free to copy, alter and re-use it,
#+ but please don’t try to claim you wrote it.
# Log your changes here instead.
# =======================================================================
# changelog:
# 07/02/2005. Fixups by Little Monster.
# 02/02/2005. Minor additions by Little Monster.
# (See after # +++++++++++ )
# 29/01/2005. Minor stylistic edits and cleanups by author of ABS Guide.
# Added exit error codes.
# 22/11/2004. Finished initial version of second version of wgetter:
# wgetter2 is born.
# 01/12/2004. Changed ’runn’ function so it can be run 2 ways --
# either ask for a file name or have one input on the CL.
# 01/12/2004. Made sensible handling of no URL’s given.
# 01/12/2004. Made loop of main options, so you don’t
# have to keep calling wgetter 2 all the time.
# Runs as a session instead.
# 01/12/2004. Added looping to ’runn’ function.
# Simplified and improved.
# 01/12/2004. Added state to recursion setting.
# Enables re-use of previous value.
# 05/12/2004. Modified the file detection routine in the ’runn’ function
# so it’s not fooled by empty values, and is cleaner.
# 01/02/2004. Added cookie finding routine from later version (which
# isn’t ready yet), so as not to have hard-coded paths.
# =======================================================================
# Error codes for abnormal exit.
E_USAGE=67 # Usage message, then quit.
E_NO_OPTS=68 # No command-line args entered.
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