Conditionally perform a command on several files.
Syntax FOR %%parameter IN (set) DO command Key set : A set of one or more files, separated by any standard delimiter. enclosed in parenthesis (file1,file2). Wildcards can be used. command : The command to carry out, including any parameters. This can be a single command, or if you enclose it in (brackets), several commands, one per line. %%parameter : A replaceable parameter: e.g. in a batch file use %%G (on the command line %G)
Copy a single file
FOR %%G IN (MyFile.txt) DO copy %%G d:\backups\
Copy a list of several files
FOR %%G IN (Myfile.txt SecondFile.txt) DO copy %%G d:\backups\
FOR %%G IN ("C:\demo files\file1.txt" "C:\demo files\File2.txt") DO copy %%G d:\backups\
The FOR command is mostly used to process files, but you can also process a text string:
FOR %%G IN ("Hello World") DO Echo %%G
This is not really useful being much the same as Echo Hello World
Although wildcards can be used, an alternative method of processing files is to let FOR /F process the output of the command 'DIR /b' This can be useful when you want to use DIR options like sorting.
The FOR command does not generally set any errorlevels, leaving that to the command being called.
One exception is using a wildcard, if the wildcard does not match any files, then FOR will return %ERRORLEVEL% = 5
FOR is an internal command.
"Darkness reigns at the foot of the lighthouse" ~ Japanese Proverb
FOR - Loop commands
FOR /R - Loop through files (recurse subfolders)
FOR /D - Loop through several folders
FOR /L - Loop through a range of numbers
FOR /F - Loop through items in a text file
FOR /F - Loop through the output of a command
FORFILES - Batch process multiple files
GOTO - Direct a batch program to jump to a labelled line
IF - Conditionally perform a command
Equivalent bash command (Linux): for - Expand words, and execute commands