Crthuky

Is this apparent Class Action settlement a spam message?

Do all network devices need to make routing decisions, regardless of communication across networks or within a network?

How to safely derail a train during transit?

Two monoidal structures and copowering

What can we do to stop prior company from asking us questions?

Sort a list by elements of another list

Nautlius: add mouse right-click action to compute MD5 sum

How easy is it to start Magic from scratch?

How to Reset Passwords on Multiple Websites Easily?

Purchasing a ticket for someone else in another country?

What happens if you roll doubles 3 times then land on "Go to jail?"

Short story about space worker geeks who zone out by 'listening' to radiation from stars

Where does the Z80 processor start executing from?

Gears on left are inverse to gears on right?

CREATE opcode: what does it really do?

Large drywall patch supports

Avoiding estate tax by giving multiple gifts

Pole-zeros of a real-valued causal FIR system

Term for the "extreme-extension" version of a straw man fallacy?

A particular customize with green line and letters for subfloat

How can a function with a hole (removable discontinuity) equal a function with no hole?

Is there a problem with hiding "forgot password" until it's needed?

How can I kill an app using Terminal?

I'm in charge of equipment buying but no one's ever happy with what I choose. How to fix this?

Escape a backup date in a file name

Converting a string from a file into a dateHow to append date to backup fileCreate sub-directories and organize files by date from file namecannot create regular file 'filename': File existsHow to append a date to all files in a directory without touching sub-directories via bash scriptadding date to beginning of file name using scriptinserting modified date into filename - 2 casesCan the date command take as argument a date string in a file given by another date command?Set file modification date from date stored as filenameHow to Find and delete File Older than 3 years without scaning on modified date?

3

I have been trying to:

cp file.csv file.$(date +%D).csv

But it fails because the filenames is: file.03/27/19.csv with the slash of separate directories.

And I have been trying again to:

cp file.csv file.$(printf "%q" $(date +%D)).csv

But it still fails.

shell filenames date escape-characters slash

share|improve this question

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can not set a filename with slash characters: stackoverflow.com/questions/9847288/…
  
  – tres.14159
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the problem is your use of the date format using the / character. You said it yourself, the shell is seeing them as directory markers. Try one of the many other options available from date. You might be able to get the / escaped so the filename uses the character code (like putting a space in a filename), but that is often problematic.
  
  – 0xSheepdog
  5 hours ago
  
  

  
  
  
  

add a comment | 

3

I have been trying to:

cp file.csv file.$(date +%D).csv

But it fails because the filenames is: file.03/27/19.csv with the slash of separate directories.

And I have been trying again to:

cp file.csv file.$(printf "%q" $(date +%D)).csv

But it still fails.

shell filenames date escape-characters slash

share|improve this question

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can not set a filename with slash characters: stackoverflow.com/questions/9847288/…
  
  – tres.14159
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the problem is your use of the date format using the / character. You said it yourself, the shell is seeing them as directory markers. Try one of the many other options available from date. You might be able to get the / escaped so the filename uses the character code (like putting a space in a filename), but that is often problematic.
  
  – 0xSheepdog
  5 hours ago
  
  

  
  
  
  

add a comment | 

I have been trying to:

cp file.csv file.$(date +%D).csv

But it fails because the filenames is: file.03/27/19.csv with the slash of separate directories.

And I have been trying again to:

cp file.csv file.$(printf "%q" $(date +%D)).csv

But it still fails.

shell filenames date escape-characters slash

share|improve this question

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

cp file.csv file.$(date +%D).csv

cp file.csv file.$(printf "%q" $(date +%D)).csv

share|improve this question

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

share|improve this question

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

edited 26 mins ago

Gilles

544k12811041621

edited 26 mins ago

Gilles

544k12811041621

asked 5 hours ago

tres.14159tres.14159

2612

asked 5 hours ago

tres.14159tres.14159

2612

1 Answer
1

active

oldest

votes

10

You can't have / (byte 0x2F on ASCII-based systems) in a file name, period.

You can use characters that look like / like ⁄ (fraction slash), so you could do:

 cp file.csv "file.$(date +%D | sed 's|/|⁄|g').csv"

But you may run into problems like the file name being rendered differently in locales using a different charset.

My advice would be to use the standard non-ambiguous (for most people outside the US, 03/12/18 would be interpreted as the 3^rd of December 2018 for instance) YYYY-mm-dd format instead (which also helps wrt sorting):

 cp file.csv "file.$(date +%Y-%m-%d).csv"

Which with many date implementations you can shorten to:

 cp file.csv "file.$(date +%F).csv"

share|improve this answer

edited 4 hours ago

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

add a comment | 

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');

var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);

;
$window.on('scroll', onScroll);

);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f509043%2fescape-a-backup-date-in-a-file-name%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

10

You can't have / (byte 0x2F on ASCII-based systems) in a file name, period.

You can use characters that look like / like ⁄ (fraction slash), so you could do:

 cp file.csv "file.$(date +%D | sed 's|/|⁄|g').csv"

But you may run into problems like the file name being rendered differently in locales using a different charset.

My advice would be to use the standard non-ambiguous (for most people outside the US, 03/12/18 would be interpreted as the 3^rd of December 2018 for instance) YYYY-mm-dd format instead (which also helps wrt sorting):

 cp file.csv "file.$(date +%Y-%m-%d).csv"

Which with many date implementations you can shorten to:

 cp file.csv "file.$(date +%F).csv"

share|improve this answer

edited 4 hours ago

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

add a comment | 

10

You can't have / (byte 0x2F on ASCII-based systems) in a file name, period.

You can use characters that look like / like ⁄ (fraction slash), so you could do:

 cp file.csv "file.$(date +%D | sed 's|/|⁄|g').csv"

But you may run into problems like the file name being rendered differently in locales using a different charset.

My advice would be to use the standard non-ambiguous (for most people outside the US, 03/12/18 would be interpreted as the 3^rd of December 2018 for instance) YYYY-mm-dd format instead (which also helps wrt sorting):

 cp file.csv "file.$(date +%Y-%m-%d).csv"

Which with many date implementations you can shorten to:

 cp file.csv "file.$(date +%F).csv"

share|improve this answer

edited 4 hours ago

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

add a comment | 

You can't have / (byte 0x2F on ASCII-based systems) in a file name, period.

You can use characters that look like / like ⁄ (fraction slash), so you could do:

 cp file.csv "file.$(date +%D | sed 's|/|⁄|g').csv"

But you may run into problems like the file name being rendered differently in locales using a different charset.

My advice would be to use the standard non-ambiguous (for most people outside the US, 03/12/18 would be interpreted as the 3^rd of December 2018 for instance) YYYY-mm-dd format instead (which also helps wrt sorting):

 cp file.csv "file.$(date +%Y-%m-%d).csv"

Which with many date implementations you can shorten to:

 cp file.csv "file.$(date +%F).csv"

share|improve this answer

edited 4 hours ago

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

 cp file.csv "file.$(date +%D | sed 's|/|⁄|g').csv"

 cp file.csv "file.$(date +%Y-%m-%d).csv"

 cp file.csv "file.$(date +%F).csv"

share|improve this answer

edited 4 hours ago

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

answered 5 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946