General :: Use Regexp In Diff / Exclude Lines That Contain The String "[skipthisline]"?
Feb 10, 2011
I need to compare 2 files using diff. The problem I've encountered is that I need to exclude certain lines that contain certain phrases. I know that diff supports the -I switch but no matter how I try to form the regexp it doesn't seem to work the way I expect it to. If anyone has used the -I switch before could you please post some examples of how it is used.
diff -I "[skipthisline]" file1 file2 > output.diff
I need to exclude lines that contain the string "[skipthisline]" but I have no idea what syntax is used after the -I switch. Is is supposed to be included in quotes or slashes /[skipthisline]/ or entered without either? I need to include a backslash before each bracket so that it's not interpreted as a set of characters like [a-z] but is instead interpreted as a string. Do I need to use 2 backslashes? "\[skipthisline\]"
Is it sufficient to simply type the string I want to match or do I need to match the entire line in order to exclude it from the output?
.*[skipthisline].*
or
^.*[skipthisline].*$
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Mar 31, 2010
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0.0 43
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Code:
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b
c
d
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a
b
d
e
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Code:
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Code:
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