Given a file listing with underscores in the file names, e.g.
foo_first.txt foo_second.txt foo_third.txt
This is ugly, but it works. Start a new command shell with delayed variable expansion option
cmd /v, then run the following one-liner, e.g. to replace the underscores with spaces:
C:\>for /f %i in ('dir /b') do @set x=%i & echo !x:_= !
The result will be:
foo first.txt foo second.txt foo third.txt
The first trick, delayed variable expansion, is enabled by starting a new command shell with the /v option. This lets you set and change a variable's value at runtime by surrounding the variable with bangs ! instead of percents %. Normally, the default no immediate variable expansion would not update the x variable each time
dir /breturns a line. Only the last value set to x is echoed each time:
foo third.txt foo third.txt foo third.txt
The second trick, character substitution, is set by
You can substitute other characters, e.g.
!x:abc=def!would turn abcxyz.txt into defxyz.txt