Awk Floating Point Number Addition Results Are Unexpected

Posted on in Categories , , , last updated July 29, 2013

I am using awk to grep ‘foo’ from a text file and cacluate sum of field # 7. But, result is rounded to an integer. I need exact result such as 385858.66 and not 385858 using the following command:

grep ‘foo’ 2012-2013.txt | awk ‘BEGIN{ sum=0.0}{ sub(“,”,””,$7); sum +=$7}END{ print “$” sum}’

I want $682444.57 as output. How can I force “awk” to do floating point math?

AWK: Remove All Blank Spaces From String / Field

Posted on in Categories , , last updated April 14, 2013

I need to parse the following text file:

# config
user = www30021
group = ftp30020
uid = 30021
gid = 30020
tmp_path = /netapp42/shared/www/images/
tmp_perms = defaults,nodev,nosuid,noexec
jail = on
location = /jails/apache/h/
sftp = on
ftps = off
php-cgi = on
perl-cgi = off

I need to find out value for each field and remove any blank spaces / white spaces from the field. How do I solve this problem using awk under Linux or Unix like operating systems?