Yours , not my 
awk, gawk, nawk,mawk are stand-alone utility not builtin shell.
What OS you run?
If works for you why not.
Warning on Forum Rules (10)
pipe delimited file with 1 million records
What software wrote this file?
Hi frdndz,
Thank you all for your posts and suggestions,
Finally, with you help, i got the answer for my question.
# perl -e 'while (<> ){ print if(/^([^\|]*\|){1,149}[^|]$/ || /^([^\|]\|){151,}/); }' < a
My sincere thanks to SKMDU for showing patience in modifying code, and providing answer..
Thanks again,