big file processeing

Shell Programming and Scripting
1

hi,

i have a very big file that holding data, how could i pick line by line from this file.
the following process can illustrate better:

file
-------------------
123444444 |
122314567 |-----------data
146689000 |

c=123444444 ---------- c is variable

process c ----------- passing c to script (sh,sql....etc)

c=122314567 ---------- c is variable

process c ----------- passing c to script (sh,sql....etc)

c=146689000 ---------- c is variable

process c ----------- passing c to script (sh,sql....etc)

i think u understand what i want to do
please help

thanx in advance

2

I'm more of a Perl man, so here it is in perl:

#!/usr/bin/perl -w

while ($c = <>) {
    #Process $c here!!!
}

exit 0;

put the above code in a file called something like lineExtract.pl, make it executable, then you can do the following to use it:

./lineExtract.pl <big_file_to_process

$c will contain the information one line at a time!

3

thanx Wintellect ..... how could i represent this with SH

4 
#!/usr/bin/ksh
exec < datafile
while read c ; do
          somescript  $c
done
exit 0

Whether or not this will work with sh depends on which version of sh. If it has the read statement, it should work.