I have a library of files. Each file has each own *.md5 file (created by Total Commander) with md5 hash and additional *.txt file with some comments.
Is there any way to move these comments from *.txt file to *.md5 file (and delete *.txt file) in a form of some internal block of comments (like using "rem" in Windows batch files or "<! --" and "-- >" in HTML) so I could still use *.md5 files to check the hashes?
Use # as a comment character.
The accepted answers suggesting ; works with Total Commander in Windows, but gives an error with GNU's md5sum, and probably also with other tools:
md5sum: WARNING: 1 line is improperly formatted
But both Total Commander and the standard md5sum accept the usual Unix comment character # instead. So use that.
Additional notes:
While Windows has traditionally been using ; as a comment character, particularly in it's older .ini files, Unix mostly uses # in it's shells and most scripting environments. (and Windows too now, in Powershell).
Since (arguably) most uses of md5 are on Unix machines where tools like md5 on Macs or md5sum on Linux come with the OS, the traditional # seems a bit safer.
Note also that TC on Windows accepts .md5 files with Unix "LF" line endings (or "/" as path separator), but the Unix tools cannot check md5 files using Windows "CRLF" line endings (or "\" in paths).
However, there is nothing about comments in the original RFC 1321, and there doesn't seem to be any official mention of using comments in .md5 files...
Any line beginning with ; in .md5 files is a comment.
Related
I am writing a simple batch script, and I need to delete one line from the file that gets downloaded by the script. What is the easiest way to do this using ONLY the command prompt? I have come across several various suggestions, but nothing to very simply delete one string that is constant across all files that are downloaded with the script.
This is a very platform dependant question. If you are using a *nix environment (Linux / Mac environment using bash / shell), you can accomplish this with sed
sed '/${regular_expression_that_matches_line_to_be_removed}/d' yourFile.txt > newFile.txt
This will generate a new file called newFile.txt that will contain the output. You can also do this in place (it modifies the file it's using as input), but I recommend against that because if you mess up your regex, you've lost your input.
If you're using a Windows environment (which I assume you are due to your batch-file tag), try looking at this Delete certain lines in a txt file via a batch file
I would like to rename Multiple files in a Unix Directory using Ksh Command.
Eg ATT8-2011-10-01 00:00:00-MSA-IMM-SINGLE_AND_FAMILY_COVERAGE-DED-$2000-X114817.PDF
needs to be renamed as
ATT8-2011-10-01-MSA-IMM-SINGLE_AND_FAMILY_COVERAGE-DED-$2000-X114817.PDF
Basically the time portion which is always 00:00:00 needs to be stripped off and the space between the date and the next hyphen symbol (-) needs to be compressed.
Any ideas as to how to this ? Assuming they are about 3000 files in the directory.
On some systems, there is a Perl-based rename command (sometimes called prename) and you'd write:
rename 's/ 00:00:00//' *" 00:00:00-"*
If you don't have that, find it. If you can't find it, then you have more work to do. However, the work is searching on SO. For example, Underscore in rename command (Perl and Unix shell) has a link to one version of the prename (Perl rename) command.
I have bunch of files that need to have a (.) dot removed from the file-name. Eg. "Mr.-John-Smith.jpg" to "Mr-John-Smith.jpg". I don't have real experience with programming and know only html/css and a little javascript. I found another identical question here on stackoverflow, but what I gathered it was fixed on linux system and BASH was used.
Anyways, if anyone could provide me a tutorial on which program to use for this and what code to execute in that program to make it happen I'd be grateful.
if you are using a windows environment (which i guess you do)
you can download this free utility to mass change file names !
main page :
http://www.bulkrenameutility.co.uk/Main_Intro.php
download page :
http://www.bulkrenameutility.co.uk/Download.php
its easy to use
enjoy
If your file names in a file...
1- Open Microsoft Word or any text editor. Press ctrl+h and then search "." without quotes then replace it with blank character.
2- It will remove all dots, again bring "." to your file extention such as .jpg , .png searh your file extention for example "jpg" and replace it with ".jpg"
It will works %100, i am using this method everytime.
if they are not in a file and if you want do somethings in your operation systems' file system
Try this program. It is very useful for this operation;
Download
To remove all except the extension dot from all files in a directory, you can use PowerShell that comes with newer versions of Windows, and can be downloaded for older versions;
Line breaks inserted for readability, this should go on one line;
PS> dir | rename-item -newname {
[System.IO.Path]::GetFileNameWithoutExtension($_.name).Replace(".","") +
[System.IO.Path]::GetExtension($_.name); }
What it does is to take the file name without an extension and remove all dots in it, and then add back the extension. It then renames the file to the resulting name.
This will change for example do.it.now to doit.now, or in your case, Mr.-John-Smith.jpg to Mr-John-Smith.jpg.
I have a file which may be in ASCII or UTF-8 format. I can know which format it is through Notepad++. But can some one tel me a tool that could show me in which format the file is through command prompt.
Example:
Open Command Prompt,
C:><Some Command> FileName
which should give me the file format like ASCII or UTF-8.
Install Python 3.x
Run command in cmd.exe (Administrator): pip install chardet
Write a small python script that read a file, detect the encoding, and print the encoding using the newly installed module chardet. See here for help.
Put the script somewhere under PATH
Suppose you create ec.py doing the job. Then you can invoke ec FileName on command line to get the encoding. If you do a good job writing the python script, you can invoke something like ec *.txt to get the encodings of multiple files.
This is a duplicate of this question here which has a great answer (not by me I might add)
EDIT
I am pretty sure there is not way that is reliable to do this, usually you are told the encoding of a file, sure you can look for a Byte Order Mark (BOM) at the start of the file but its not mandatory and so is not a true indicator unless you know for SURE its supposed to be there.
Unless someone knows differently I don't think its possible to work out from scratch you have to have some clue about the encoding used.
I have a strange file in my file system without the extension part. The filename is "15.". The weird thing is that it is not one of those without the dot part (like just "15"), but the one with the dot but no extension ("15.") -- it is literally an illegal filename in windows, and not sure how did it get created in the first place.
I know it is a text file and it is about 15KB in size; however, due to the weirdness in name, I can't open it with any application -- I've tried to open in notepad, wordpad, etc., have tried the 'type' command to spit it out on commans shell, tried to shell-open enclosing filename in quotes, and so on -- all methods result in a 'file not found' error except the notepad, which says '15.txt' is not found.
Due to the nature of the issue and the way search engines optimize the search, it is extemely hard to search for an answer in any of the search engines online. So, I just wanted to put this question out there and see if anybody had to deal with a similar issue and have found any way to rename the file or even to change the extension.
Filenames that are valid in NTFS but cannot be used from Windows can be created when accesing disks or shares from other operating systems like Linux.
If you don't have a Linux installation at hand, then get hold of a "live" CD, boot Linux, and change the filename.
That may sound like a hassle, but Windows-only solutions (moving stuff around, deleting the directory) are even worse.
Use REN: http://ss64.com/nt/ren.html
It is a command prompt command (run > cmd > cd wherever > ren 15. 15.txt )