using "del" to delete a list of filenames in a text file?

bledd

bledd

bledd

Don
Joined
21 Oct 2002
Posts
46,808
Location
Parts Unknown
ok, i've got the folder..

C:\test\

in there it has
1.txt
2.txt
3.txt
4.txt
5.txt
~
1000.txt

some contain the word 'bledd' and I want to delete them.


i've used findstr like this..

findstr /I /S /M bledd *.* >c:\output.txt

that created output.txt, and in that file it says..

Code: 
1.txt
5.txt
680.txt
999.txt


in the same bat file, how can I get it to delete all the files listed in output.txt?


my 'ghetto' way of pasting the contents into column b in excel, then filling a with del /q and pasting it all back into notepad just won't do this time :p
 
Last edited:
im a bit confused and know nothing abt programming but if u just want to delete all txt documents with the word bledd then u could do a search for documents containing the word bledd and when its found them...just select all and delete.

im guessing that sounds too simple and it wasnt what u were asking :p
 
Try something like this:

Code: 
@echo off 
setLocal EnableDelayedExpansion 

for /f "tokens=* delims= " %%a in (myfile) do ( 
set /a n+=1 
set v!n!=%%a 
) 
set v
Where V is obviously your working variable and myfile is the list of the files in the same directory as this batch script (which also needs to be the same folder where the to be deleted files are)

Burnsy
 
Can't you just do this:

for /f %a in (fred.txt) do dir %a

in the above example for each line in file fred.txt the command dir would be performed.
 
thanks guys, my commandline 'knowledge' has stemed from 7za.exe and robocopy.exe, the rest i just botch together

really need to spend some time on ss64.com

can i ask, when using for

what's the difference between..

/F
/D
/R
/L?


edit
so what i want is..

for /f %a in (output.txt) do del /Q %a

-edit2, yup that worked
 
Last edited:
/F is to parse a file, default is line by line but you can use options to set things like delimiters
/D is to match against a directory
/R is the same as above but will recurse through subfolders
/L is for a set of numbers ie start from, end at and step amount

If you do for '/?' it should give you help on then command
 
U:\>for /?
Runs a specified command for each file in a set of files.

FOR %variable IN (set) DO command [command-parameters]

%variable Specifies a single letter replaceable parameter.
(set) Specifies a set of one or more files. Wildcards may be used.
command Specifies the command to carry out for each file.
command-parameters
Specifies parameters or switches for the specified command.

To use the FOR command in a batch program, specify %%variable instead
of %variable. Variable names are case sensitive, so %i is different
from %I.

If Command Extensions are enabled, the following additional
forms of the FOR command are supported:

FOR /D %variable IN (set) DO command [command-parameters]

If set contains wildcards, then specifies to match against directory
names instead of file names.

FOR /R [[drive:]path] %variable IN (set) DO command [command-parameters]

Walks the directory tree rooted at [drive:]path, executing the FOR
statement in each directory of the tree. If no directory
specification is specified after /R then the current directory is
assumed. If set is just a single period (.) character then it
will just enumerate the directory tree.

FOR /L %variable IN (start,step,end) DO command [command-parameters]

The set is a sequence of numbers from start to end, by step amount.
So (1,1,5) would generate the sequence 1 2 3 4 5 and (5,-1,1) would
generate the sequence (5 4 3 2 1)

FOR /F ["options"] %variable IN (file-set) DO command [command-parameters]
FOR /F ["options"] %variable IN ("string") DO command [command-parameters]
FOR /F ["options"] %variable IN ('command') DO command [command-parameters]

or, if usebackq option present:

FOR /F ["options"] %variable IN (file-set) DO command [command-parameters]
FOR /F ["options"] %variable IN ('string') DO command [command-parameters]
FOR /F ["options"] %variable IN (`command`) DO command [command-parameters]

filenameset is one or more file names. Each file is opened, read
and processed before going on to the next file in filenameset.
Processing consists of reading in the file, breaking it up into
individual lines of text and then parsing each line into zero or
more tokens. The body of the for loop is then called with the
variable value(s) set to the found token string(s). By default, /F
passes the first blank separated token from each line of each file.
Blank lines are skipped. You can override the default parsing
behavior by specifying the optional "options" parameter. This
is a quoted string which contains one or more keywords to specify
different parsing options. The keywords are:

eol=c - specifies an end of line comment character
(just one)
skip=n - specifies the number of lines to skip at the
beginning of the file.
delims=xxx - specifies a delimiter set. This replaces the
default delimiter set of space and tab.
tokens=x,y,m-n - specifies which tokens from each line are to
be passed to the for body for each iteration.
This will cause additional variable names to
be allocated. The m-n form is a range,
specifying the mth through the nth tokens. If
the last character in the tokens= string is an
asterisk, then an additional variable is
allocated and receives the remaining text on
the line after the last token parsed.
usebackq - specifies that the new semantics are in force,
where a back quoted string is executed as a
command and a single quoted string is a
literal string command and allows the use of
double quotes to quote file names in
filenameset.

Some examples might help:

FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @Echo %i %j %k

would parse each line in myfile.txt, ignoring lines that begin with
a semicolon, passing the 2nd and 3rd token from each line to the for
body, with tokens delimited by commas and/or spaces. Notice the for
body statements reference %i to get the 2nd token, %j to get the
3rd token, and %k to get all remaining tokens after the 3rd. For
file names that contain spaces, you need to quote the filenames with
double quotes. In order to use double quotes in this manner, you also
need to use the usebackq option, otherwise the double quotes will be
interpreted as defining a literal string to parse.

%i is explicitly declared in the for statement and the %j and %k
are implicitly declared via the tokens= option. You can specify up
to 26 tokens via the tokens= line, provided it does not cause an
attempt to declare a variable higher than the letter 'z' or 'Z'.
Remember, FOR variables are single-letter, case sensitive, global,
and you can't have more than 52 total active at any one time.

You can also use the FOR /F parsing logic on an immediate string, by
making the filenameset between the parenthesis a quoted string,
using single quote characters. It will be treated as a single line
of input from a file and parsed.

Finally, you can use the FOR /F command to parse the output of a
command. You do this by making the filenameset between the
parenthesis a back quoted string. It will be treated as a command
line, which is passed to a child CMD.EXE and the output is captured
into memory and parsed as if it was a file. So the following
example:

FOR /F "usebackq delims==" %i IN (`set`) DO @Echo %i

would enumerate the environment variable names in the current
environment.

In addition, substitution of FOR variable references has been enhanced.
You can now use the following optional syntax:

%~I - expands %I removing any surrounding quotes (")
%~fI - expands %I to a fully qualified path name
%~dI - expands %I to a drive letter only
%~pI - expands %I to a path only
%~nI - expands %I to a file name only
%~xI - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
environment variable and expands %I to the
fully qualified name of the first one found.
If the environment variable name is not
defined or the file is not found by the
search, then this modifier expands to the
empty string

The modifiers can be combined to get compound results:

%~dpI - expands %I to a drive letter and path only
%~nxI - expands %I to a file name and extension only
%~fsI - expands %I to a full path name with short names only
%~dp$PATH:I - searches the directories listed in the PATH
environment variable for %I and expands to the
drive letter and path of the first one found.
%~ftzaI - expands %I to a DIR like output line

In the above examples %I and PATH can be replaced by other valid
values. The %~ syntax is terminated by a valid FOR variable name.
Picking upper case variable names like %I makes it more readable and
avoids confusion with the modifiers, which are not case sensitive.

U:\>
 
Click search button while in the folder containing the files, enter you search phrase in 'A word or phrase in the file:'. Now click search, when search is finished CTRL+A then hit delete, job done...
 
TrUz said:
Click search button while in the folder containing the files, enter you search phrase in 'A word or phrase in the file:'. Now click search, when search is finished CTRL+A then hit delete, job done...
Click to expand...

I should've said, it's thousands of files, explorer can't open it

sorted now
 
You must log in or register to reply here.
Back
Top Bottom