03-26-2008
Grep two lines at a time
Hello;
i have a log file which had Invalid, error, missing words in it.
I want to grab a line which matches either of the above words and one more line below the grepped line.
Can this be done?
I looked on other places on your forum, but there is nothing which is working.
I tried following things:
sed -n '/Invalid/ {p; n; p;}' r0035251.rpt <--- But this one does not have a case sensitive as well as multiple pattern matching.
nawk is not available on my system
grep -B <---- again not available.
egrep -i command gives me the matched line, but I am not sure how to combine it with sed to be able to display the next line too!
Can anyone help?
Thanks
Josh
thanks
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LOOK(1) General Commands Manual LOOK(1)
NAME
look - find lines in a sorted list
SYNOPSIS
look [ -dfnixtc ] [ string ] [ file ]
DESCRIPTION
Look consults a sorted file and prints all lines that begin with string. It uses binary search.
The following options are recognized. Options dfnt affect comparisons as in sort(1).
-i Interactive. There is no string argument; instead look takes lines from the standard input as strings to be looked up.
-x Exact. Print only lines of the file whose key matches string exactly.
-d `Directory' order: only letters, digits, tabs and blanks participate in comparisons.
-f Fold. Upper case letters compare equal to lower case.
-n Numeric comparison with initial string of digits, optional minus sign, and optional decimal point.
-t[c] Character c terminates the sort key in the file. By default, tab terminates the key. If c is missing the entire line comprises the
key.
If no file is specified, /lib/words is assumed, with collating sequence df.
FILES
/lib/words
SOURCE
/sys/src/cmd/look.c
SEE ALSO
sort(1), grep(1)
DIAGNOSTICS
The exit status is "not found" if no match is found, and "no dictionary" if file or the default dictionary cannot be opened.
LOOK(1)