have you checked the GNU sed man page recently? it does in-place-editing with the -i or --in-place switch.
sed -i s/^/./g porndomain.acl would have worked as well, without the side-effect .bak file being produced. On Thu, Jul 16, 2009 at 3:17 AM, Richard Paradies<[email protected]> wrote: > sed doesn't edit in situ. > > Try > > $ cat add_dot.txt > sex.com > blahblah.com > weak.com > > sed 's/^/./gw u.out' add_dot.txt | mv u.out add_dot.txt > > $ cat add_dot.txt > .sex.com > .blahblah.com > .weak.com > > > > On Wed, Jul 15, 2009 at 10:28 AM, Kelsey Hartigan Go > <[email protected]> wrote: >> >> You can use ex, or even vi >> %s/^/\./g >> :wq >> >> >> On 7/15/09, eric pareja <[email protected]> wrote: >> > hi david, >> > >> > the more "traditional" way would have been to use sed as follows: >> > >> > sed -i.bak s/^/./g porndomain.cal >> > >> > side-effect is to generate a backup file with the .bak extension. >> > >> > xen >> > >> > On Wed, Jul 15, 2009 at 12:14 PM, david t. asuncion, >> > jr.<[email protected]> wrote: >> >> A total CLI newbie here. :) >> >> >> >> I have a file like this... >> >> >> >> cat porndomain.acl >> >> >> >> sex.com >> >> blahblah.com >> >> weak.com >> >> .... >> >> >> >> What I want to happen is to add a "." on each line to look like this... >> >> >> >> .sex.com >> >> .blahblah.com >> >> .weak.com >> >> >> >> How can I do that with one line of command in Linux? >> >> -- eric pareja ([email protected]) LPIC-2 | PGP/GPG Key 0xB82E42D9 Coordinator for Technology / Senior Linux Trainer National Telehealth Center, University of the Philippines Manila International Open Source Network - ASEAN+3 "Ang mundo ay aklat, at iisang pahina lamang ang nababasa ng hindi naglalakbay." わかよたれぞ つねならむ _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
