DOS: Commands (Continued)

1. Escape characters in DOS
    Use ^

2. Write lines into a file in DOS (write new file)
    Echo Text > text.txt

3. Write lines into a file in DOS (append to file)
    Echo Text >> text.txt

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In the following examples, we iterate a list of files and use the idiom ~[idiom] to extract certain part of a given filename.

Extract the filename without the extension : ~n

for %i in (*.*) do echo %~ni

Extract the file extension without the filename : ~x

for %i in (*.*) do echo %~xi

Extract the file attribute : ~a

for %i in (*.*) do echo %~ai

Extract the file time : ~t

for %i in (*.*) do echo %~ti

Extract the drive only : ~d

for %i in (*.*) do echo %~di

Extract the path only : ~p

for %i in (*.*) do echo %~pi 

Extract the complete name : ~s

for %i in (*.*) do echo %~si 

Extract the file length (in bytes) : ~z

for %i in (*.*) do echo %~zi 

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The path (with drive) where the script is : ~dp0

set BAT_HOME=%~dp0
echo %BAT_HOME%
cd %BAT_HOME%

The path (without drive) where the script is : ~p0

set BAT_HOME=%~p0
echo %BAT_HOME%
cd %BAT_HOME%

The drive where the script is : ~d0

set BAT_DRIVE=%~d0
echo %BAT_DRIVE%

The complete script name : ~s0

set BAT_PATH=%~s0
echo %BAT_PATH%

The script name only (as called with or without the extension): %0

set BAT_NAME=%0
echo %BAT_NAME%