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Hi pareshkp,
You might also want to try a slightly simpler awk script:
awk -F'[<=>]' '{printf("%s%s",$(NF-2),(NR%5)?(NR%5==1)?" ":";":ORS)}' Input

which with your sample input produces the...

perl -plne 's/^(\w+)_F3/$1/' datafile

awk -F, \$3 file

sa+=($2<0)?-$2:$2
could also be
sa+=sqrt($2^2)

$ cat infile
24x18g
12x18g
300g
24x18Kg
12x18Kg
300Kg

$ awk -Fx '{t=$0;gsub(/[0-9x]/,"",t);$0=($1*($2?int($2):1)) t}1' infile

432g
216g
300g
432Kg
216Kg
300Kg

"Dear" OP,

It's unethical to ask for ready-to-go solutions in a forum of volunteers. You will have to learn to put in some effort in doing your homework before asking for help.

Since we are...

awk -F, '$6!="\"\"" ' infile

Try indenting your code. Then I think it will be obvious where the problem is.

wc -l testfile|0m0.488s
wc -l < testfile|0m0.493s
gawk 'END{printf ("%d\n", NR)}' testfile|0m5.220s
mawk 'END{printf ("%d\n", NR)}' testfile|0m2.133s
sed -n '$=' testfile|0m14.833s
grep -c \$...

Why not figure out all your problems and jot down all your questions in a single post, instead of asking them in installments ?

tyler_durden