Recursive: Walks the directory tree that is rooted at drive : path and executes the for statement in each directory of the tree. If set is just a single period. Iterating a range of values: Use an iterative variable to set the starting value start and then step through a set range of values until the value exceeds the set ending value end.
If start is less than end the command will execute. When the iterative variable exceeds end , the command shell exits the loop. You can also use a negative step to step through a range in decreasing values. For example, 1,1,5 generates the sequence 1 2 3 4 5 and 5,-1,1 generates the sequence 5 4 3 2 1. Iterating and file parsing: Use file parsing to process command output, strings, and file content.
Use iterative variables to define the content or strings that you want to examine, and use the various parsingkeywords options to further modify the parsing. Use the parsingkeywords token option to specify which tokens should be passed as iterative variables. File parsing consists of reading the output, string, or file content, and then breaking it into individual lines of text and parsing each line into zero or more tokens.
The for loop is then called with the iterative variable value set to the token. Blank lines are skipped. The set argument specifies one or more file names. This option is useful when dealing with a filenameset that is a long filename containing spaces, it allows you to put double quotes around the filename.
Because double quotes are used to indicate a filename, it then uses single quotes instead of double quotes to indicate a text string and backquotes for a command to process. Filenames which don't contan spaces can still be referenced without using quotes. SKIP will skip processing a number of lines from the beginning of the file.
The default end-of-line character is a semicolon ';' when the FOR command reads a text file or even a character string , any line that STARTS with the eol character will be ignored. It is only interpreted as a special symbol when that string is parsed separately from the loop, as a "sub-command", according to the syntax. And that is done after parsing the loop. If you modify your script to use the absolute path of the Windows find then the error will go away:.
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Learn more. Batch script with for loop and pipe Ask Question. Asked 10 years, 8 months ago. Active 9 months ago. Viewed 36k times. Thanks in advance! Gilbeg Gilbeg 2 2 gold badges 9 9 silver badges 19 19 bronze badges. Add a comment. More advanced example shows, how derived in FOR loop from a restricted files set data can be used to redirect batch execution, while saving the searched content to a file:. Note, how long command strings are split into several code lines, and command groups are separated by parentheses.
Every iteration or pass through the loop thereby processes a different file from the defined group which might equally have been any group, e.
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