Regular Expression
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From: The Magnet on 6 Aug 2010 17:10 I have data in a file that I need to do a global replace on. Each line starts like this: 1, 2, Basically a number then a comma then a space then a number then a comma then a space. I need to do a global replace throughout the file so it looks like this: 1||||2|||| (So number then 4 pipes then number then 4 pipes). I'm playing with SED but cannot get the regular expression. Any help please?
From: pk on 6 Aug 2010 17:21 On Fri, 6 Aug 2010 14:10:05 -0700 (PDT) The Magnet <art(a)unsu.com> wrote: > I have data in a file that I need to do a global replace on. Each > line starts like this: 1, 2, > > Basically a number then a comma then a space then a number then a > comma then a space. > > I need to do a global replace throughout the file so it looks like > this: > > 1||||2|||| (So number then 4 pipes then number then 4 pipes). > > I'm playing with SED but cannot get the regular expression. Any help > please? sed 's/^\([0-9]\{1,\}\), \([0-9]\{1,\}\)/\1||||\2||||/' file
From: John W. Krahn on 7 Aug 2010 02:46 The Magnet wrote: > I have data in a file that I need to do a global replace on. Each > line starts like this: 1, 2, > > Basically a number then a comma then a space then a number then a > comma then a space. > > I need to do a global replace throughout the file so it looks like > this: > > 1||||2|||| (So number then 4 pipes then number then 4 pipes). > > I'm playing with SED but cannot get the regular expression. Any help > please? perl -pe's/^(\d+), (\d+), /$1||||$2||||/' yourfile John -- Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction. -- Albert Einstein
From: Mart Frauenlob on 7 Aug 2010 03:12 On 06.08.2010 23:10, The Magnet wrote: > I have data in a file that I need to do a global replace on. Each > line starts like this: 1, 2, > > Basically a number then a comma then a space then a number then a > comma then a space. > > I need to do a global replace throughout the file so it looks like > this: > > 1||||2|||| (So number then 4 pipes then number then 4 pipes). > > I'm playing with SED but cannot get the regular expression. Any help > please? one shell only version: eris:/tmp# cat tst 1, 2, foo bar 2, 3, bar foo eris:/tmp# sh -c 'while read first second rest; do printf "%s||||%s||||%s\n" "${first%%,}" "${second%,}" "$rest"; done <tst' 1||||2||||foo bar 2||||3||||bar foo
From: Mart Frauenlob on 7 Aug 2010 03:14
On 07.08.2010 09:12, Mart Frauenlob wrote: > On 06.08.2010 23:10, The Magnet wrote: >> I have data in a file that I need to do a global replace on. Each >> line starts like this: 1, 2, >> >> Basically a number then a comma then a space then a number then a >> comma then a space. >> >> I need to do a global replace throughout the file so it looks like >> this: >> >> 1||||2|||| (So number then 4 pipes then number then 4 pipes). >> >> I'm playing with SED but cannot get the regular expression. Any help >> please? > > one shell only version: > > eris:/tmp# cat tst > 1, 2, foo bar > 2, 3, bar foo > eris:/tmp# sh -c 'while read first second rest; do printf > "%s||||%s||||%s\n" "${first%%,}" "${second%,}" "$rest"; done <tst' > 1||||2||||foo bar > 2||||3||||bar foo > > "${first%%,}" should be: "${first%,}" |