Ggthjy

Example of a relative pronoun

What makes Graph invariants so useful/important?

XeLaTeX and pdfLaTeX ignore hyphenation

What is the meaning of "of trouble" in the following sentence?

I’m planning on buying a laser printer but concerned about the life cycle of toner in the machine

DOS, create pipe for stdin/stdout of command.com(or 4dos.com) in C or Batch?

Is there a familial term for apples and pears?

Can I interfere when another PC is about to be attacked?

Should I join office cleaning event for free?

Set-theoretical foundations of Mathematics with only bounded quantifiers

Is there really no realistic way for a skeleton monster to move around without magic?

How to type dʒ symbol (IPA) on Mac?

How is this relation reflexive?

Copycat chess is back

Why is the design of haulage companies so “special”?

How is it possible for user's password to be changed after storage was encrypted? (on OS X, Android)

Why are 150k or 200k jobs considered good when there are 300k+ births a month?

Extreme, but not acceptable situation and I can't start the work tomorrow morning

Why is "Reports" in sentence down without "The"

Download, install and reboot computer at night if needed

How to make payment on the internet without leaving a money trail?

Modification to Chariots for Heavy Cavalry Analogue for 4-armed race

Why has Russell's definition of numbers using equivalence classes been finally abandoned? ( If it has actually been abandoned).

Possibly bubble sort algorithm

Is it possible to replace duplicates of a character with one character using tr

How to replace the content of specific column with awk? Tab Delimited FileReplace a string with “string|string”using sed with ampersand (&)Read Text File; Copy Non-Indented Text Line; Replace Beginning of Indented Lines with Said TextReplace matching parentheses with enclosing contentHow to replace all occurrences in a file with unique value for each occurrenceSearch replace in XML file with sed or awkFind and replace with awkSharing Linux character devices with the virtual guests (virtual machines/containers)How can I replace the space character in SVN dump branches name?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

7

I'm trying to take all occurrences of # and if they are consecutive replace them with just one #.

e.g.

 ab ### cde fghi## jklm

would become:

ab # cde, fghi# jklm

My initial goal was to replace all consecutive digits with # so; 120 -> # and 3->#. However I found that 120->###. So now I'm left with this new problem.

linux text-processing replace tr

share|improve this question

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

add a comment | 

7

I'm trying to take all occurrences of # and if they are consecutive replace them with just one #.

e.g.

 ab ### cde fghi## jklm

would become:

ab # cde, fghi# jklm

My initial goal was to replace all consecutive digits with # so; 120 -> # and 3->#. However I found that 120->###. So now I'm left with this new problem.

linux text-processing replace tr

share|improve this question

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

add a comment | 

I'm trying to take all occurrences of # and if they are consecutive replace them with just one #.

e.g.

 ab ### cde fghi## jklm

would become:

ab # cde, fghi# jklm

My initial goal was to replace all consecutive digits with # so; 120 -> # and 3->#. However I found that 120->###. So now I'm left with this new problem.

linux text-processing replace tr

share|improve this question

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

 ab ### cde fghi## jklm

ab # cde, fghi# jklm

share|improve this question

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

share|improve this question

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

edited Mar 30 at 19:59

Rui F Ribeiro

42k1483142

asked Mar 30 at 13:15

user652437user652437

391

asked Mar 30 at 13:15

user652437user652437

391

1 Answer
1

active

oldest

votes

21

Using tr -s:

$ echo 'ab ### cde fghi## jklm' | tr -s '#'

ab # cde fghi# jklm

---

-s Squeeze multiple occurrences of the characters listed in the last operand (either string1 or string2) in the input into a single instance of the character.
This occurs after all deletion and translation is completed.

---

Your original problem could have been solved with:

sed -E 's/[0-9]+/#/g'

Or POSIXly:

sed 's/[[:digit:]]{1,}/#/g'

Or:

tr -s '[:digit:]' '[#*]'

share|improve this answer

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

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%2f509583%2fis-it-possible-to-replace-duplicates-of-a-character-with-one-character-using-tr%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

21

Using tr -s:

$ echo 'ab ### cde fghi## jklm' | tr -s '#'

ab # cde fghi# jklm

---

-s Squeeze multiple occurrences of the characters listed in the last operand (either string1 or string2) in the input into a single instance of the character.
This occurs after all deletion and translation is completed.

---

Your original problem could have been solved with:

sed -E 's/[0-9]+/#/g'

Or POSIXly:

sed 's/[[:digit:]]{1,}/#/g'

Or:

tr -s '[:digit:]' '[#*]'

share|improve this answer

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

add a comment | 

21

Using tr -s:

$ echo 'ab ### cde fghi## jklm' | tr -s '#'

ab # cde fghi# jklm

---

-s Squeeze multiple occurrences of the characters listed in the last operand (either string1 or string2) in the input into a single instance of the character.
This occurs after all deletion and translation is completed.

---

Your original problem could have been solved with:

sed -E 's/[0-9]+/#/g'

Or POSIXly:

sed 's/[[:digit:]]{1,}/#/g'

Or:

tr -s '[:digit:]' '[#*]'

share|improve this answer

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

add a comment | 

Using tr -s:

$ echo 'ab ### cde fghi## jklm' | tr -s '#'

ab # cde fghi# jklm

---

-s Squeeze multiple occurrences of the characters listed in the last operand (either string1 or string2) in the input into a single instance of the character.
This occurs after all deletion and translation is completed.

---

Your original problem could have been solved with:

sed -E 's/[0-9]+/#/g'

Or POSIXly:

sed 's/[[:digit:]]{1,}/#/g'

Or:

tr -s '[:digit:]' '[#*]'

share|improve this answer

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

$ echo 'ab ### cde fghi## jklm' | tr -s '#'

ab # cde fghi# jklm

sed -E 's/[0-9]+/#/g'

sed 's/[[:digit:]]{1,}/#/g'

tr -s '[:digit:]' '[#*]'

share|improve this answer

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

edited Mar 30 at 20:37

Stéphane Chazelas

313k57593949

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574