Linux diff command
Translation results：
diff
UK['dɪf] US['dɪf]
abbr.differential differential (of);difference different;differ different;differentiator differentiator
Linux diff commandsyntax
Function: diff command is used to compare the differences of files.
Syntax: diff [-abBcdefHilnNpPqrstTuvwy][-<Number of lines>][-C <Number of lines>][-D <Macro name>][ -I <character or string>][-S <file>][-W <width>][-x <file or directory>][-X <file>][ --help][--left-column][--suppress-common-line][file or directory 1][file or directory 2]
Linux diff commandexample
Compare two files
[root@localhost test3]# diff log2014.log log2013.log 3c3< 2014-03---> 2013-038c8< 2013-07---> 2013-0811,12d10< 2013-11< 2013-12
The above "3c3" and "8c8" indicate that the log2014.log and log20143log files have different contents in lines 3 and 8; "11,12d10" indicates the first The first file has more lines 11 and 12 than the second file.