Re: how to find literal in file and them delete that line
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 10/05/2010 04:38:25, Fbsd1 wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. Does anyone have a example they would share with me? grep -v 'literal' file file.new Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkvnopEACgkQ8Mjk52CukIxlzgCfW1u7k0O1BZ5gCM5emVUfJJGk 80IAn100dDD01WMkTrXXE3NI88Ohd/ZK =6nDd -END PGP SIGNATURE- ___ 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
how to find literal in file and them delete that line
I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. Does anyone have a example they would share with me? Thanks. ___ 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: how to find literal in file and them delete that line
On Sun, May 9, 2010 at 11:08 PM, Fbsd1 fb...@a1poweruser.com wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. man(1) sed Regards Alberto Mijares ___ 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: how to find literal in file and them delete that line
Alberto Mijares wrote: On Sun, May 9, 2010 at 11:08 PM, Fbsd1 fb...@a1poweruser.com wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. man(1) sed Regards That makes no sense to me. need example ___ 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: how to find literal in file and them delete that line
On Mon, 10 May 2010, Fbsd1 wrote: Alberto Mijares wrote: On Sun, May 9, 2010 at 11:08 PM, Fbsd1 fb...@a1poweruser.com wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. man(1) sed That makes no sense to me. need example What makes no sense? The sed(1) man page? Which section in particular is confusing? And please, explain the rationale for making your port automatically edit /etc/rc.conf. -- Sahil Tandon sa...@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: how to find literal in file and them delete that line
Sahil Tandon wrote: On Mon, 10 May 2010, Fbsd1 wrote: Alberto Mijares wrote: On Sun, May 9, 2010 at 11:08 PM, Fbsd1 fb...@a1poweruser.com wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. man(1) sed That makes no sense to me. need example What makes no sense? The sed(1) man page? Which section in particular is confusing? And please, explain the rationale for making your port automatically edit /etc/rc.conf. editing /etc/rc.conf was just given as a example for the post. Yes the whole man sed reads like Greek. For a neophyte programmer I can not even begin to comprehend what its saying. That man page needs examples of use. You have forgotten that those man pages are for reference for people who all ready know how to use it. Its not intended for novices. So yes it's useless to me. ___ 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: how to find literal in file and them delete that line
Alberto Mijares wrote: On Sun, May 9, 2010 at 11:08 PM, Fbsd1 fbsd1 at a1poweruser.com wrote: I want to search every line in the specified file for a literal and if found then delete that line from the file and save the file all from within a sh type of shell script. man(1) sed Regards That makes no sense to me. need example It would make sense if you read the sed(1) and re_format(7) manpages. They may be a pain at first, but they are used often and can make your life a lot easier. There are also a lot of tutorial on the web, with many useful examples, e.g.: http://sed.sourceforge.net/grabbag/ He is suggesting that, rather than using sh(1), you should use sed(1), which is typically used for this sort of task, and is also part of the base system, in some fashion like, for example: sed -e '/literal/d' file If you insist on doing this with sh(1), which will probably be less efficient, then you can cobble something together with a 'case' statement, or parameter expansion with substring processing. See the sh(1) manpage. I hope that you are not intending to use this for a FreeBSD Port in the context of your earlier message. As someone else has already told you, ports should _not_ be automatically editing configuration files like rc.conf. Instead they should just indicate what should be added by the user or administrator in a pkg-message. Although you are free to do whatever you want on your own system, if you submit a port that attempts to tamper with such files to FreeBSD Ports, it is likely that that part of your submission will be rejected. 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: how to find literal in file and them delete that line
b. f. wrote: Alberto Mijares wrote: snip It would make sense if you read the sed(1) and re_format(7) manpages. They may be a pain at first, but they are used often and can make your life a lot easier. There are also a lot of tutorial on the web, with many useful examples, e.g.: http://sed.sourceforge.net/grabbag/ He is suggesting that, rather than using sh(1), you should use sed(1), which is typically used for this sort of task, and is also part of the base system, in some fashion like, for example: sed -e '/literal/d' file If you insist on doing this with sh(1), which will probably be less efficient, then you can cobble something together with a 'case' statement, or parameter expansion with substring processing. See the sh(1) manpage. I hope that you are not intending to use this for a FreeBSD Port in the context of your earlier message. As someone else has already told you, ports should _not_ be automatically editing configuration files like rc.conf. Instead they should just indicate what should be added by the user or administrator in a pkg-message. Although you are free to do whatever you want on your own system, if you submit a port that attempts to tamper with such files to FreeBSD Ports, it is likely that that part of your submission will be rejected. Thank you for your kind in-sight. Using sh was again just comments to help explain what I needed help with. A list reader replied offline with examples and now I have what I needed to proceed. Thanks to all who replied. ___ 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
