BASH: Change alias to script to add a task Post: 302488590

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Top Forums UNIX for Dummies Questions & Answers BASH: Change alias to script to add a task Post 302488590 by SilversleevesX on Monday 17th of January 2011 09:53:32 PM

01-17-2011

Registered User

BASH: Change alias to script to add a task

Hi.

I use an alias, "homeperm" as shorthand for curl -o. Since most of what I download via cUrl is graphic image files -- jpeg files -- I'd like to be able to change this alias to a script, or use it to invoke a function, which will not only download the file but date-stamp it using Exiv2 in either (or both) the IPTC or EXIF annotation "blocks". This would save me the hassle of going back and manually entering this information after reading the mod date for file X or Y in my file manager.

if anyone is familiar with the "curl -o" command, and I suppose not a few people are, then you know that its syntax is [command][your-file-name][source-URL]. Where I'm drawing a blank in turning this alias into something fancier is: I'm not sure, having neither seen it done nor done it myself in the past, how to write a script or function that will follow this same syntax.

I've done some simple scripts that prompt for input using the echo and read commands, but what I'm looking for is a way to enter the [your-file-name] and [source-URL] parts on the same line with the "homeperm," which is how the alias works and is very much what I've grown accustomed to.

Is it possible in BASH to get the second and third parts of a string from stdin passed, just as a f'r'instance, as variable values that can be handled by a function or script like this? If so, how would one go about it?

Or is it necessary to already have a subshell running before such a thing could be done?

I'm sorry I can't offer any "crappy candidate code" to show what I mean, but if anyone needs part or all of this idea explained any more clearly, then please ask: I'll do my best.

Hoping someone can help me with this.

BZT

SilversleevesX

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CURLOPT_NOBODY(3)					     curl_easy_setopt options						 CURLOPT_NOBODY(3)

NAME

       CURLOPT_NOBODY - do the download request without getting the body

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_NOBODY, long opt);

DESCRIPTION

       A  long	parameter  set	to  1  tells libcurl to not include the body-part in the output when doing what would otherwise be a download. For
       HTTP(S), this makes libcurl do a HEAD request. For most other protocols it means just not asking to transfer the body data.

       Enabling this option means asking for a download but without a body.

DEFAULT

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PROTOCOLS

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EXAMPLE

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AVAILABILITY

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RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_HTTPGET(3), CURLOPT_POST(3),

libcurl 7.54.0							 February 03, 2016						 CURLOPT_NOBODY(3)