They're supposed to be efficient when you use them like this. They're not straight arrays, they're some sort of hash or tree structure (implementation dependent).
You can get rid of the cat in BEGIN though -- in fact you can get rid of the BEGIN, just check for NR==FNR (line number in file equals total line number), which will only be true inside the first file awk reads...
And instead of checking for YUPPERS, check "if X in A" -- this is more efficient because it won't create a new array element whenever it finds an empty one.
I need to list the files that do not match the search pattern:
Example:
cat file1
This is how it should work
cat file2
This is why I like Unix
grep -option? Unix * (or some other command)
returns file1 (7 Replies)
Hi ALL,
I am making a script that search all then worldwriteable dir in documentroot.I have manage to find all the dir now i want to match each file extension in worldwriteable against a list of array which contain file like php html etc,if i find any file then print dirname. Dont see to get any... (8 Replies)
Hi,
From the pattern mentioned below remove lines based on pattern range.
Conditions
1 Look For all lines starting with ALTER TABLE and Ending with ; and contains the word MOVE.I wanto to remove these lines from the file sample below.
Note : The above pattern list could be found in... (1 Reply)
Hello,
I'm taking a username from keyboard as input and i want to check if it exists in a list under a directory for example "/home/students/" ....
if there is a match i want to type the list...
can anyone give me an example or a tutorial to read plz?
thnx for your help. (1 Reply)
Hello, can someone help me how to find a word and 2 lines after it and then send the output to another file.
For example, here is myfile1.txt. I want to search for "Error" and 2 lines below it and send it to myfile2.txt
I tried with grep -A but it's not supported on my system.
I tried with awk,... (4 Replies)
I have a sorted list (python) and I want to insert a string if it matches the pattern in list.
Example :
Sorted List
Above list is in sorted order. I need to insert a name in sorted order and also if the name already exist then it should be inserted before the existing... (1 Reply)
I am trying to look for $2 of file1 (skipping the header) in $2 of file2 (skipping the header) and if they match and the value in $10 is > 30 and $11 is > 49, then print the line from file1 to a output file. If no match is foung the line is not printed. Both the input and output are tab-delimited.... (3 Replies)
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
In the awk below I am trying to output those lines that Match between file1 and file2, those Missing in file1, and those missing in file2. Using each $1,$2,$4,$5 value as a key to match on, that is if those 4 fields are found in both files the match, but if those 4 fields are not found then missing... (0 Replies)
Full title: How to write a script to match a searched name to a given list, and then returns other names with the same properties
Anyway, first time here, hi! So I'm taking an introductory course at uni and there's a question in our lab that asks us to write a script where a user can search a... (4 Replies)
Discussion started by: aheyhey
4 Replies
LEARN ABOUT REDHAT
igawk
IGAWK(1) Utility Commands IGAWK(1)NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)