[Solved] Show lines above and below!

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# 1  
Old 10-05-2011
[Solved] Show lines above and below!

hello team -

anyone can help shwoing how to grep a file showing the lines above and below?

# 2  
Old 10-05-2011
grep -B1 -A1 "searchme" input_file

# 3  
Old 10-05-2011
in awk ..
$ awk '/pattern/{print x};{x=$0}'  ## before
$ awk '/pattern/{getline;print}' ## after

# 4  
Old 10-05-2011
awk '/searchme/{print pre;print;getline;print}{pre=$0}' input_file

# 5  
Old 10-05-2011
And if GNU grep is not available, you could try Bruce Barnett's context grep sed implementation.
# 6  
Old 10-05-2011
using sed ..
$ sed -n '/pattern/{g;1!p;};h' ## before
$ sed -n '/pattern/{n;p;}' ## after

# 7  
Old 10-05-2011
awsome!!! it worked fine!
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