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Delete blank line in regular file

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# 1  
Old 01-19-2015
Linux Delete blank line in regular file
Hi all,

I have file1 with line blank e.g.

Code:
$cat file1
aaa  111 222 333 444
bbb 555 666 777 888
ccc
ddd 1010 1010 1010 
eee

then i need delete the lines blank (3 and 5) so show

Code:
$cat file1
aaa  111 222 333 444
bbb 555 666 777 888
ddd 1010 1010 1010

Thanks you,
# 2  
Old 01-19-2015
There are no blank lines in your file1 - I assume you mean you want to delete all rows which contain no columns except the first one?

What have you tried so far?
# 3  
Old 01-19-2015
Yes sorry exactly delete all rows which contain blank
Code:
$cat file1 
aaa  111 222 333 444 
bbb  555 666 777 888 
ccc 
ddd  1010 1010 1010  
eee

to
Code:
$cat file1 
aaa  111 222 333 444 
bbb 555 666 777 888 
ddd 1010 1010 1010

# 4  
Old 01-19-2015
your request is not clear

if you want to delete completely empty lines, try sed
Code:
sed '/^\s*$/d' file

your example will work with

Code:
awk 'NF!=1' file

This User Gave Thanks to senhia83 For This Post:
aav1307
# 5  
Old 01-19-2015
Quote:
Originally Posted by aav1307
Yes sorry exactly delete all rows which contain blank
Code:
$cat file1 
aaa  111 222 333 444 
bbb  555 666 777 888 
ccc 
ddd  1010 1010 1010  
eee

to
Code:
$cat file1 
aaa  111 222 333 444 
bbb 555 666 777 888 
ddd 1010 1010 1010

Hello aav1307,

Following may help you in same.(Not tested though)
Code 1: Following one will check if number of fields are one or line is empty it will not print those lines.
Code:
awk '{if(NF==1 || $0 ~ /^$/){next} else {print $0}}' Input_file


Code 2:Following one will look only for lines which have more than 1 field.
Code:
awk 'NF>1' Input_file

Code 3: If you want to simply remove empty lines in file.
Code:
grep -v '^$' Input_file

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
aav1307
# 6  
Old 01-20-2015
Yes fine this work
Code:
awk 'NF!=1' file

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