extracting sentences that only contain a word

Shell Programming and Scripting
1

Hi guys

Need your help how do I extract sentences with only a word

i.e.

today is hot

hot

very

[tab]humid

humid2

Sample output

hot
very
humid
humid2

Thanks

2

This should give what u want....

nawk 'NF==1 {print}' filename

Thanks
SHa

3

WOW! thanks Shahul!

4

Try this:

awk 'NF==1' your_file
5

Hi,

Using 'perl':

$ perl -ne 'print +(map { s/^\s*(\S+)\s*$/$1/; $_ } $_), "\n" if /^\s*\S+\s*$/' infile

Regards,
Birei

6

This gets rid of the tab

awk 'NF==1 && $1=$1' infile
7