Removing empty lines at the end of a Tab-delimited file


 
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# 1  
Removing empty lines at the end of a Tab-delimited file

I'm trying to remove all of the empty lines at the end of a Tab delimited file. They have no data just tabs.

I've tried may things, here are a couple:
Code:
sed /^\t.\t/d File1 > File2 
sed /^\t{44}/d File1 > File2

What am I missing?
# 2  
using awk

Code:
awk 'NF>=1' input.txt > output.txt

---------- Post updated at 06:19 PM ---------- Previous update was at 06:18 PM ----------

try this

Code:
sed "/ *\t */d" input.txt

what is your OS ?
# 3  
Windows. Using Cygwin.

---------- Post updated at 09:54 AM ---------- Previous update was at 09:11 AM ----------

Quote:
Originally Posted by itkamaraj
using awk

Code:
awk 'NF>=1' input.txt > output.txt

---------- Post updated at 06:19 PM ---------- Previous update was at 06:18 PM ----------

try this

Code:
sed "/ *\t */d" input.txt

what is your OS ?
The sed didn't work, it returned an empty file.
# 4  
Got perl?

Code:
perl -ne '!/^\s+$/ && print' input.txt

# 5  
Using perl for this is like using an orbiting laser weapon to start a campfire.

This will print any lines that contain non-tab characters. A line that has only tabs in it should be ignored...
Code:
awk '/[^\t]/' filename

# 6  
Quote:
Originally Posted by Corona688
Using perl for this is like using an orbiting laser weapon to start a campfire.

This will print any lines that contain non-tab characters. A line that has only tabs in it should be ignored...
Code:
awk '/[^\t]/' filename

This one left me with a file full of tabs and nothing else.
# 7  
I tested it before posting, it does nothing of the sort.

Code:
$ printf "\t\t\t\nabc\n" | awk '/[^\t]/'

abc

$

You're not typing this into Windows CMD, are you? That botch of a pseudo-shell has horrific quoting issues and will scramble much of what you type into it. Be sure to use a real shell like bash or ksh or zsh or... anything but windows CMD.
 

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