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Shell Programming and Scripting

Remove line from file

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# 1  
Old 09-24-2010
Remove line from file
Hi!!!
When I use vi editor my file looks like this:
aaa2: 123.45^M
aaa1: 11.34^M
aaa3:
aaa3: 15.56^M

How to remove only line 3 ???
Thanks!!!
# 2  
Old 09-24-2010
Code:
$ ruby -i.bak -ane 'print if $F[1]' myfile

# 3  
Old 09-24-2010
Code:
sed -ni.bak '/\^/p' file

# 4  
Old 09-24-2010
sed -i '3d' filename
# 5  
Old 09-25-2010
Code:
awk 'NF>1' infile

# 6  
Old 09-25-2010
One way to portably (posix-compliant) modify a file in place:
Code:
printf '3d\nw\nq\n' | ed -s file

or
Code:
ed -s file <<EOED
    3d
    w
    q
EOED

Regards,
Alister
Last edited by alister; 09-25-2010 at 01:33 PM..
# 7  
Old 09-25-2010
Code:
sed '/.*:$/d' filin
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