Re: remove newlines from a file
[Agghh. To list this time] On Tuesday 01 September 2009 20:03:19 Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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? I'd use rs(1). inputfile rs -C\ (The \ is escaping a space delimiter.) unless I was worried about maximum length of output lines, in which case inputfile xargs Jonathan ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
remove newlines from a file
I found a sed tutorial once that did this, but I can't seem to find it again. 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? -- Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. *** It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead. Thomas Jefferson ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
On 2009-09-01 18:03, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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? Personally, I'd use: % tr -d '\n' inputfile -- Matthew Anthony Kolybabi (Mak) m...@kolybabi.com () ASCII Ribbon Campaign | Against HTML e-mail /\ www.asciiribbon.org | Against proprietary extensions ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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? paste(1)? b. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
On 09/01/2009 03:03 PM, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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 simple solution could be using tr command tr -d '\012' file output_file ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
Hi, Am Dienstag, 01. Sep 2009, 18:03:19 + schrieb Paul Schmehl: I found a sed tutorial once that did this, but I can't seem to find it again. 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? Probably this: $ echo `cat ip-file` $ ipline=`cat ip-file` $ echo $ipline | wc -l Bertram -- Bertram Scharpf Stuttgart, Deutschland/Germany http://www.bertram-scharpf.de ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
--On Tuesday, September 01, 2009 13:55:37 -0500 Mak Kolybabi m...@kolybabi.com wrote: On 2009-09-01 18:03, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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? Personally, I'd use: % tr -d '\n' inputfile Personally, I like your solution. :-) -- Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. *** It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead. Thomas Jefferson ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
On Tue, Sep 01, 2009 at 06:03:19PM +, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. 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? Use tr(1) something like tr -d [\n] inputfile outputfile jerry -- Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. *** It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead. Thomas Jefferson ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
On Tue, Sep 01, 2009 at 06:03:19PM +, 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 $joined Lots of options, of course. Even more with Perl. -- George ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
George Davidovich wrote: On Tue, Sep 01, 2009 at 06:03:19PM +, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. You're probably thinking of Useful One-Line Scripts for Sed: http://sed.sourceforge.net/sed1line.txt A good follow-up: http://www.osnews.com/story/21004/Awk_and_Sed_One-Liners_Explained I have a file with multiple lines, each of which contains a single ip followed by a /32 and a comma. I want to combine all those lines into a single line by removing all the newline characters at the end of each line. What's the best/most efficient way of doing that in a shell? A sed solution would be sed -e :a -e '$!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 $joined Lots of options, of course. Even more with Perl. Yeah, how 'bout Perl: % perl -ne 's/\n/ /g; print;' tests/ips.txt :) Steve smime.p7s Description: S/MIME Cryptographic Signature
Re: remove newlines from a file
On Tue, 1 Sep 2009, Steve Bertrand wrote: George Davidovich wrote: On Tue, Sep 01, 2009 at 06:03:19PM +, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. You're probably thinking of Useful One-Line Scripts for Sed: http://sed.sourceforge.net/sed1line.txt A good follow-up: http://www.osnews.com/story/21004/Awk_and_Sed_One-Liners_Explained I have a file with multiple lines, each of which contains a single ip followed by a /32 and a comma. I want to combine all those lines into a single line by removing all the newline characters at the end of each line. What's the best/most efficient way of doing that in a shell? A sed solution would be sed -e :a -e '$!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 $joined Lots of options, of course. Even more with Perl. Yeah, how 'bout Perl: % perl -ne 's/\n/ /g; print;' tests/ips.txt perl -pe 'chomp' myfile is somewhat easier. Works with Ruby, too. -Warren Block * Rapid City, South Dakota USA ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: remove newlines from a file
Warren Block wrote: On Tue, 1 Sep 2009, Steve Bertrand wrote: George Davidovich wrote: On Tue, Sep 01, 2009 at 06:03:19PM +, Paul Schmehl wrote: I found a sed tutorial once that did this, but I can't seem to find it again. You're probably thinking of Useful One-Line Scripts for Sed: http://sed.sourceforge.net/sed1line.txt A good follow-up: http://www.osnews.com/story/21004/Awk_and_Sed_One-Liners_Explained I have a file with multiple lines, each of which contains a single ip followed by a /32 and a comma. I want to combine all those lines into a single line by removing all the newline characters at the end of each line. What's the best/most efficient way of doing that in a shell? A sed solution would be sed -e :a -e '$!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. Nce golf... Works with Ruby, too. Is Ruby Perl? ;) Steve smime.p7s Description: S/MIME Cryptographic Signature
