Date: Tue, 01 Sep 2009 20:59:56 -0400 From: Steve Bertrand <steve@ibctech.ca> To: Warren Block <wblock@wonkity.com> Cc: George Davidovich <freebsd@optimis.net>, freebsd-questions@freebsd.org Subject: Re: remove newlines from a file Message-ID: <4A9DC38C.5090002@ibctech.ca> In-Reply-To: <alpine.BSF.2.00.0909011818190.7738@wonkity.com> References: <F2B402210EF1C4F7331B41C2@utd65257.utdallas.edu> <20090901205201.GA6126@marvin.optimis.net> <4A9DA1AB.8020102@ibctech.ca> <alpine.BSF.2.00.0909011818190.7738@wonkity.com>
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[-- Attachment #1 --] Warren Block wrote: > On Tue, 1 Sep 2009, Steve Bertrand wrote: >> George Davidovich wrote: >>> On Tue, Sep 01, 2009 at 06:03:19PM +0000, Paul Schmehl wrote: >>>> I found a sed tutorial once that did this, but I can't seem to find it >>>> again. >>> >>> You're probably thinking of "Useful One-Line Scripts for Sed": >>> >>> http://sed.sourceforge.net/sed1line.txt >>> >>> A good follow-up: >>> >>> http://www.osnews.com/story/21004/Awk_and_Sed_One-Liners_Explained >>> >>>> I have a file with multiple lines, each of which contains a single ip >>>> followed by a /32 and a comma. I want to combine all those lines into >>>> a single line by removing all the newline characters at the end of >>>> each line. >>>> >>>> What's the best/most efficient way of doing that in a shell? >>> >>> A sed solution would be >>> >>> sed -e :a -e '$!N; s/\n/ /; ta' my_file >>> >>> Other (easier to remember) solutions could include: >>> >>> tr -d '\n' < my_file >>> tr '\n' ' ' < my_file >>> >>> echo $(cat my_file) # not so useless use of cat! >>> >>> paste -s my_file >>> >>> while read line; do >>> joined="$joined $(echo $line)" >>> done < my_file >>> echo $joined >>> >>> Lots of options, of course. Even more with Perl. >> >> Yeah, how 'bout Perl: >> >> % perl -ne 's/\n/ /g; print;' < tests/ips.txt > > perl -pe 'chomp' myfile > > is somewhat easier. Niiiice golf... > Works with Ruby, too. Is Ruby Perl? ;) Steve [-- Attachment #2 --] 0 *H 01 0 + 0 *H 00CK9AbxIUw0 *H 0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0 090507231610Z 100507231610Z0B1 0 UThawte Freemail Member1 0 *H steve@ibctech.ca0"0 *H 0 DZ杙<2IⵀfrsE6 q?0.> S@Œ!V?A\Q r-aZ Ōf/0{OYQhɏߴ F_\Q0BF=<_.a*3ep eY |t ݼcvlҷ+@p iQA{2E9 WN4[Z`h6VM/zPbd(G C ^K6XV4j<t -0+0U 0steve@ibctech.ca0 U 0 0 *H æ|85aQz-*3HG .s*Fw*`HvFw; 9ytƘn0taC/:WC+LÙ{Oq 1 n00CK9AbxIUw0 *H 0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0 090507231610Z 100507231610Z0B1 0 UThawte Freemail Member1 0 *H steve@ibctech.ca0"0 *H 0 DZ杙<2IⵀfrsE6 q?0.> S@Œ!V?A\Q r-aZ Ōf/0{OYQhɏߴ F_\Q0BF=<_.a*3ep eY |t ݼcvlҷ+@p iQA{2E9 WN4[Z`h6VM/zPbd(G C ^K6XV4j<t -0+0U 0steve@ibctech.ca0 U 0 0 *H æ|85aQz-*3HG .s*Fw*`HvFw; 9ytƘn0taC/:WC+LÙ{Oq 1 n0?0 0 *H 01 0 UZA10U Western Cape10U Cape Town10U Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *H personal-freemail@thawte.com0 030717000000Z 130716235959Z0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA00 *H 0 Ħ<UsUNʙZ hup [v :aQP 0cZ,p+Z?qV˯< 6$*+w=+>@dקe*TH<a@ dr` 00U 0 0CU <0:08642http://crl.thawte.com/ThawtePersonalFreemailCA.crl0 U 0)U "0 0 10UPrivateLabel2-1380 *H HP . fgCL!6 -6/ P p<ab:~ t%Pb'qW%ݩ9 Oe_N4[5MwV!x!5$ F]_eO1d0`0v0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0 + 0 *H 1 *H 0 *H 1 090902005956Z0# *H 1'^V ukOwc0R *H 1E0C0 *H 0*H 0 *H @0+0 *H (0 +71x0v0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0 *H 1xv0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0 *H F. S-`@4#i'_U闗mth e6ȯ+ZQڊ 3`Xөų uU16 ѕ M9>Ƚw(ӸwIwy5=R}G z\- 5LLŨ ݁4S%QЯ<7kXs*cozs!?Qc/2 s4.'j~&`m\ZaU"! ~DHu\9
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