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

.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

314k57594952

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

add a comment | 

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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

314k57594952

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

314k57594952

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

314k57594952

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

314k57594952

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

edited Mar 30 at 20:37

Stéphane Chazelas

314k57594952

edited Mar 30 at 20:37

Stéphane Chazelas

314k57594952

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574

answered Mar 30 at 13:19

Jesse_bJesse_b

14.4k33574