Date: Fri, 4 Sep 1998 11:18:37 -0500 From: Dan Nelson <dnelson@emsphone.com> To: Roman Katsnelson <romank@graphnet.com> Cc: "q's" <freebsd-questions@FreeBSD.ORG> Subject: Re: grep question Message-ID: <19980904111837.A8446@emsphone.com> In-Reply-To: <35F01196.BA6A7F7F@graphnet.com>; from "Roman Katsnelson" on Fri Sep 4 12:13:10 GMT 1998 References: <35EFEEA4.65B3315F@graphnet.com> <19980904095358.A7658@emsphone.com> <35F01196.BA6A7F7F@graphnet.com>
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In the last episode (Sep 04), Roman Katsnelson said:
> > # delete the offending record
> > sed -e "${start}-${end}d" < $file > $file.tmp
>
> Thank you!
> When I test this on an actual record, though,
> it returns:
>
> sed: 1: "270-285d": invalid command code -
>
> any ideas?
>
> btw, what's a good book on sed and awk and sh etc.?
Oops.. That's a typo. the sed line should read
sed -e "${start},${end}d" < $file > $file.tmp
i.e. a "," instead of a "-". I believe there are O'Reilly books on
both sed and awk. Awk is good for field-based processing (summing
columns, etc), and sed is good for line-based processing. I just read
the man pages, and hope for the best :)
-Dan
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