print adjacent lines

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# 1  
Old 04-29-2002
print adjacent lines

how do you print the lines before and after the line you are interested in? Example: Line to be printed: line 344

line 343
line 344
line 345

# 2  
Old 04-29-2002
i have this on my printline script. i'm just wondering if there's a better way...

# printline 344

b=`expr $1 - 1`
a=`expr $1 + 1`
sed -n ''$b','$a'p' file > newfile
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