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NAWK to remove lines that matches a specific pattern

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Top Forums Shell Programming and Scripting NAWK to remove lines that matches a specific pattern
# 8  
Old 12-23-2010
if pattern value(abc) is in pat variable then:
Code:
awk '$0 ~ p {print > file1; next}1' p="^$pat" file1=$file1_name inputfile > $file2_name

# 9  
Old 12-23-2010
Reading a file twice may not be too bad since grep is very efficient. On the other hand, processing it with "print > file" in awk will not be ideal since awk have to find which file to write and flush the file for each record (even though it only read the file once). I am sure there are other more efficient ways.
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