Mdtryhht

Sequence of Tenses: Translating the subjunctive

How does the UK government determine the size of a mandate?

What does "I’d sit this one out, Cap," imply or mean in the context?

Why not increase contact surface when reentering the atmosphere?

What is the difference between "behavior" and "behaviour"?

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

How to run a prison with the smallest amount of guards?

Two monoidal structures and copowering

Unreliable Magic - Is it worth it?

Trouble understanding the speech of overseas colleagues

Sort a list by elements of another list

Type int? vs type int

How easy is it to start Magic from scratch?

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

Anatomically Correct Strange Women In Ponds Distributing Swords

Why are there no referendums in the US?

Is there a good way to store credentials outside of a password manager?

Applicability of Single Responsibility Principle

How can we prove that any integral in the set of non-elementary integrals cannot be expressed in the form of elementary functions?

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

How can I get through very long and very dry, but also very useful technical documents when learning a new tool?

Is expanding the research of a group into machine learning as a PhD student risky?

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

How to be diplomatic in refusing to write code that breaches the privacy of our users

Escape a backup date in a file name

the slash (/) after a directory name on shell commandsDate time in Linux bashCreate sub-directories and organize files by date from file nameWhat is the difference between a directory name that ends with a slash and one that does not?How do you put date and time in a file name?adding date to beginning of file name using scripttcsh - echo escape code for escapeConvert date in bash shellHow to adjust the Exif timestamp of a photo using the date in its nameshell script to walk folders and sub-folders, convert timestamp to UTC format and export .csv file

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 2 hours ago

Gilles

544k12811041621

asked 7 hours ago

tres.14159tres.14159

2612

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can not set a filename with slash characters: stackoverflow.com/questions/9847288/…
  
  – tres.14159
  7 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
  7 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 2 hours ago

Gilles

544k12811041621

asked 7 hours ago

tres.14159tres.14159

2612

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can not set a filename with slash characters: stackoverflow.com/questions/9847288/…
  
  – tres.14159
  7 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
  7 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 2 hours ago

Gilles

544k12811041621

asked 7 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 2 hours ago

Gilles

544k12811041621

asked 7 hours ago

tres.14159tres.14159

2612

share|improve this question

edited 2 hours ago

Gilles

544k12811041621

asked 7 hours ago

tres.14159tres.14159

2612

edited 2 hours ago

Gilles

544k12811041621

edited 2 hours ago

Gilles

544k12811041621

asked 7 hours ago

tres.14159tres.14159

2612

asked 7 hours ago

tres.14159tres.14159

2612

1 Answer
1

active

oldest

votes

11

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 6 hours ago

answered 7 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');
);

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

11

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 6 hours ago

answered 7 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

add a comment | 

11

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 6 hours ago

answered 7 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 6 hours ago

answered 7 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 6 hours ago

answered 7 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

answered 7 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946

answered 7 hours ago

Stéphane ChazelasStéphane Chazelas

311k57588946