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Top Forums Shell Programming and Scripting Using sed to find text between a "string " and character "," Post 302581653 by haggismn on Tuesday 13th of December 2011 06:07:15 PM
Old 12-13-2011
I am scanning for IP addresses from a log file. The logfile being scanned contains the sets of IPs and the correct delimiters on the same line, but that line is never in a set place.

Code:
line x
line y
aaabbb ccc-ddd string ipaddress,eee string ipaddress2,fff string ipaddress3,ggg
line z

This line is then repeated further on. Its not needed really but is scanning the lines in reverse order possible?

The results then need to be output in the form of "string2 ipaddress", taking a new line each time with 2 or 3 in total. A script will be necessary there won't it?

Currently I am getting all the instances of ipaddress3 in the log file
Thanks again

Last edited by haggismn; 12-13-2011 at 07:18 PM..
 

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COL(1)							      General Commands Manual							    COL(1)

NAME
col - filter reverse line feeds SYNOPSIS
col [-bfx] DESCRIPTION
Col reads the standard input and writes the standard output. It performs the line overlays implied by reverse line feeds (ESC-7 in ASCII) and by forward and reverse half line feeds (ESC-9 and ESC-8). Col is particularly useful for filtering multicolumn output made with the `.rt' command of nroff and output resulting from use of the tbl(1) preprocessor. Although col accepts half line motions in its input, it normally does not emit them on output. Instead, text that would appear between lines is moved to the next lower full line boundary. This treatment can be suppressed by the -f (fine) option; in this case the output from col may contain forward half line feeds (ESC-9), but will still never contain either kind of reverse line motion. If the -b option is given, col assumes that the output device in use is not capable of backspacing. In this case, if several characters are to appear in the same place, only the last one read will be taken. The control characters SO (ASCII code 017), and SI (016) are assumed to start and end text in an alternate character set. The character set (primary or alternate) associated with each printing character read is remembered; on output, SO and SI characters are generated where necessary to maintain the correct treatment of each character. Col normally converts white space to tabs to shorten printing time. If the -x option is given, this conversion is suppressed. All control characters are removed from the input except space, backspace, tab, return, newline, ESC (033) followed by one of 789, SI, SO, and VT (013). This last character is an alternate form of full reverse line feed, for compatibility with some other hardware conventions. All other non-printing characters are ignored. SEE ALSO
troff(1), tbl(1), greek(1) BUGS
Can't back up more than 128 lines. No more than 800 characters, including backspaces, on a line. COL(1)
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