Re: New option for md5sum (original) (raw)

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From: Pádraig Brady
Subject: Re: New option for md5sum
Date: Sat, 19 Apr 2014 09:56:36 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2

On 04/19/2014 08:58 AM, Andreas Schwab wrote:

Bernhard Voelker <address@hidden> writes:

> On 04/19/2014 04:48 AM, Bob Proulx wrote: >> Rather than cut and using an exact number of characters I prefer to >> use awk to cut by fields. That way it works with all of the *sum >> programs. >> >> $ md5sum /dev/null | awk '{print$1}' > > And there are many other ways: > > # using the field option of cut: > $ md5sum /dev/null | src/cut -d ' ' -f 1 > d41d8cd98f00b204e9800998ecf8427e > > $ md5sum /dev/null | sed 's/ .*$//' > d41d8cd98f00b204e9800998ecf8427e

None of them handle quoted file names:

$ md5sum a\b | awk '{print$1}' \d41d8cd98f00b204e9800998ecf8427e

The first proposed option using indirection does. If that's awkward from a programmatic context, then in such a context it would be trivial (albeit not obvious) to strip.

Pádraig.