02-14-2018
Quote:
Originally Posted by
ahfze
Rudi thanks.
your command works fine but as both files are huge grep fails i think.
can you give me something equivalent in awk?
---------- Post updated at 10:04 PM ---------- Previous update was at 09:58 PM ----------
i think awk is the solution as both files are huge but ah.awk you gave doesnt work..the script just keeps running.no output.
can you check if there is any error in the codes please?
---------- Post updated at 10:22 PM ---------- Previous update was at 10:04 PM ----------
for my ah.awk i tried adding #! /usr/bin/awk -f in the top line.
still didnt work.
thanks guys for helping.
---------- Post updated at 10:30 PM ---------- Previous update was at 10:22 PM ----------
i think the issue here is not grep.
i think the while read line doesnt work for big files.
how do i replace it with awk?
works on the sample files you gave me. there must be something different with your actual files - and not just the size.
do
cat -vet patternFile and post a sample output here (using code tags).
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GREP(1) General Commands Manual GREP(1)
NAME
grep - search a file for lines containing a given pattern
SYNOPSIS
grep [-elnsv] pattern [file] ...
OPTIONS
-e -e pattern is the same as pattern
-c Print a count of lines matched
-i Ignore case
-l Print file names, no lines
-n Print line numbers
-s Status only, no printed output
-v Select lines that do not match
EXAMPLES
grep mouse file # Find lines in file containing mouse
grep [0-9] file # Print lines containing a digit
DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions
accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1
occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a
match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is
returned.
SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9).
GREP(1)