comm
SafeCompare sorted files
comm -13 <sorted1> <sorted2>
Extracts unique/common lines between sorted lists — perfect for diffing server or ID inventories.
Examples
comm -23 all.txt done.txtLines only in the first list
Syntax
comm [-123] <sorted_file1> <sorted_file2>
Before you run it
Read only.
The same reference, with no signal at all
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