In principle, the idea of switching to awk for the entire processing is not a bad one, although you shouldn't expect another performance improvement as noticeable as the one gained before.
But - you can't use shell syntax inside awk. E.g.
Code:
${record%"${record#????}" ---> substr (record, 1, 4)
a2=$(( a2 + 1 )) ---> a2+=1
$xyz ---> xyz (unless you want to access field xyz)
And, don't cata file into awk's stdin - awk can open and read a file immediately.
I am using the while-loop to read a file.
The file has lines with null-terminated strings (words, actually.)
What I have by that reading - just a first word up to '\0'!
I need to have whole string up to 'new line' - (LF, 10#10, 16#A)
What I am doing wrong?
#make file 'grb' with... (6 Replies)
Hi
I am using while loop, below, to read lines from a very large file, around 400,000 rows. The script works fine until around line 300k but then starts giving incorrect result.
I have tried running the script with a smaller data set and it works fine. I made sure to include the line where... (2 Replies)
Hi,
I'm trying to run the following command using sh -c
ie
sh -c "while read EachLine
do
rm -f $EachLine ;
done < file_list.lst;"
It doesn't seem to do anything.
When I run this at the command line, it does remove the files contained in the list so i know the command works
ie... (4 Replies)
Hi,
This is the script and the error I am receiving
Can anyone please suggest ?
For the exmaple below assume we are using vg01
#!/bin/ksh
echo "##### Max Mount Count Fixer #####"
echo "Please insert Volume Group name to check"
read VG
lvs |grep $VG | awk {'print $1'} > /tmp/audit.log
... (2 Replies)
Hi All,
I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
Hello,
I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be:
SRVXPAPI001 ERRO JUN24 07:28:34 1775
REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F
... (8 Replies)
Hi all,
I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like:
<date1>|<data1>|<url1>|<result1>
<date2>|<data2>|<url2>|<result2>
<date3>|<data3>|<url3>|<result3>
<date4>|<data4>|<url4>|<result4>
What I... (3 Replies)
Heyas
With my forum search term 'issue with leading dash' i found 2 closed threads which sadly didnt help me.
Also me was to eager to add the script, that i didnt properly test, and just now figured this issue.
So i have this code:
if ]
then while read line
do line="${line/-/'\-'}"... (7 Replies)
Heyas
I'm trying to read/display a file its content and put borders around it (tui-cat / tui-cat -t(ypwriter).
The typewriter-part is a 'bonus' but still has its own flaws, but thats for later.
So in some way, i'm trying to rewrite cat using bash and other commands.
But sadly it fails on... (2 Replies)
All- We have a performance issue in reading a file line by line. Please find attached scripts for the same. Currently it is taking some 45 min to parse "512444" lines.
Could you please have a look at it and provide any suggestions to improve the performance.
Thanks,
Balu
... (12 Replies)
Discussion started by: balu1729
12 Replies
LEARN ABOUT DEBIAN
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)