parens in sed
in [Shell]
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From: Lao Ming on 2 Nov 2009 23:09 On Oct 30, 2:27 pm, Seebs <usenet-nos...(a)seebs.net> wrote: > On 2009-10-30, Lao Ming <laoming...(a)gmail.com> wrote: > > > I'm trying format the output of md5 so it does not contain unneeded > > punctuation. > > In particular, I want to remove "^MD5", the two parens and the equal > > sign in e.g. > > > MD5 (./.bashrc) = 92caf5b1a55b3daf31d7616e81c94742 > > To just get the last value: > > awk '{print $NR}' > ${line##*= } > sed -e 's/.*= //' > > Getting the name is a bit trickier. > > I'd probably do > sed -e 's!MD5 (\(.*\)) = \(.*\)!\1 \2!g' > > > This should be easy but I'm encountering something strange and > > apparently can't see it. > > Yes. > > > sed "s/^MD5 \(//" |sed "s/\) =//" "$file" > > > sed: 1: "s/^MD5 \(//": RE error: parentheses not balanced > > sed: 1: "s/\) =//": RE error: parentheses not balanced > > In sed, ( matches a (, but \( introduces a subexpression (see the > example above). > > Note that there are multiple md5-type utilities, which have slightly > different output format. It looks like you're using a BSD-flavored > "md5" utility. You might be happier with "md5 -r": > > $ md5 -r /tmp/t > 27a67d2ee992c3bd20cdef673b6cf0ac /tmp/t Thanks, Seebs. This was perfect! I guess I should have read the man page but it didn't even occur to me to think I could get simpler output. Thanks to all other suggestions too. They all worked! > -s > -- > Copyright 2009, all wrongs reversed. Peter Seebach / usenet-nos...(a)seebs.nethttp://www.seebs.net/log/<-- lawsuits, religion, and funny pictureshttp://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated!
From: Seebs on 3 Nov 2009 02:56
On 2009-11-03, Lao Ming <laomingliu(a)gmail.com> wrote: > Thanks, Seebs. This was perfect! I guess I should have read the man > page but it didn't even occur to me to think I could get simpler > output. I never knew either, and now I'm thinking of a bunch of places in a build system I work with that use the Linuxy md5 checksummer and wondering if it has a similar option. > Thanks to all other suggestions too. They all worked! Usenet's like that! -s -- Copyright 2009, all wrongs reversed. Peter Seebach / usenet-nospam(a)seebs.net http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated! |