Removing blank lines

Shell Programming and Scripting
1

Hi,
my input file is like this I want to remove the blank line.

"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100080039.lab" 
r
a
N

e
l
a
k
sh
a
m
.
"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100070453.lab" 
a
v
a
s
aa
n
i
k
k
u
n_
n_
u
.

My output should be like this

"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100080039.lab" 
r
a
N
e
l
a
k
sh
a
m
.
"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100070453.lab" 
a
v
a
s
aa
n
i
k
k
u
n_
n_
u
.
2

If by "blank" you actually mean "empty", the simplest approach is to use tr to squeeze multiple consecutive newlines into one.

You can handle blank and/or empty lines with ed (hint: g and d commands), sed , grep , or awk .

You've been a member for nearly a year and this is a very simple problem. What have you tried? Did you even search the forum?

Regards,
Alister

3

Hello,

Could you please use the following.

awk '!/^$/'  filename

Output will be as follows.

"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100080039.lab"
r
a
N
e
l
a
k
sh
a
m
.
"/home/rit/sandbox/garuda/data/test/woman/T_RITK_F0008_ML_100070453.lab"
a
v
a
s
aa
n
i
k
k
u
n_
n_
u
.

Thanks,
R. Singh

1 Like
4

try

awk '!/^$/' file

OR

sed '/^$/d' file
1 Like
5

The best way to remove blank lines including lines with just spaces and/or TABs is:

awk NF file
2 Likes