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Top Forums Shell Programming and Scripting SED multiple find and replace Post 302576581 by ahamed101 on Friday 25th of November 2011 09:21:03 AM
Old 11-25-2011
You use -i option to edit the file directly using sed.

man sed
Quote:
-i[SUFFIX], --in-place[=SUFFIX]
edit files in place (makes backup if extension supplied)
--ahamed
 

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IP2HOSTNAME(1)						      General Commands Manual						    IP2HOSTNAME(1)

NAME
ip2hostname - converts IP addresses to their respective hostnames SYNOPSIS
ip2hostname [-h] [ -p printf_format ] [ [-i extension] file [...] ] DESCRIPTION
-h help (shows this usage information) (mnemonic: 'h'elp) -p printf_format use this printf format for IP address and hostname, respectively. The default format is '%.0s%s', which supresses the printing of the IP address (i.e. "%.0s" specifies printing a string with a maximum width of zero). To maintain column widths (since both the IP address and hostname vary in lenght), a format like this may be useful: '%-16.16s %-20s' (mnemonic: 'p'rintf format) -i extension edit the files in place (rather than sending to standard output) This option requires file name(s) argument(s). The extension is added to the name of the old file to make a backup copy. If you don't wish to make a backup, use "-I". (mnemonic: edit 'i'n place) -I like "-i" but no backup is made. (mnemonic: edit 'I'n place, trusting this script 'I'mplicitly. ;^) SEE ALSO
add_ds.pl(1), add_txrx(1), event2vrule(1), flowscan(1), locker(1) AUTHOR
This manual page was written by Anibal Monsalve Salazar, for the Debian Project. IP2HOSTNAME(1)
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