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Keep just a part of a file ...

 
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# 1  
Old 11-09-2009
Keep just a part of a file ...
hello all,

i would like your help on the following :

GIVEN a text file with the following format :
Code:
a
b
c
d
===============================================================
e

HOW can i delete all the lines that are located above this line (namely a, b, c, d lines) :
Code:
===============================================================

OR just keep the line with the equal signs and the line e ?

the desired output would be :
Code:
===============================================================
e

thank you
# 2  
Old 11-09-2009
Quote:
Originally Posted by OneDreamCloser
hello all,

i would like your help on the following :

GIVEN a text file with the following format :
Code:
a
b
c
d
===============================================================
e

HOW can i delete all the lines that are located above this line (namely a, b, c, d lines) :
Code:
===============================================================

OR just keep the line with the equal signs and the line e ?

the desired output would be :
Code:
===============================================================
e

thank you

Code:
awk '/=/{P=1}P' file1

(or)
Code:
awk '/^=+$/{P=1}P' file1

# 3  
Old 11-10-2009
Code:
cat > t1
a
b
c
d
===============================================================
e

Code:
sed -n '/=/,$p' t1
===============================================================
e

# 4  
Old 11-10-2009
thank you guys !

in the case that i would like to delete all the text that appears before the pattern :
Code:
a
b
c
===============================================================
======================== RESULTS ==============================
===============================================================
d
e

how i could do that ?
 
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