How do I get rid of extra spaces in Linux?

How do I remove spaces in Linux?

The right tool for the job

  1. tr -d ‘ ‘ < input.txt > no-spaces.txt.
  2. tr -d ‘[:blank:]’ < input.txt > no-spaces.txt.
  3. tr -d ‘[:space:]’ < input.txt > no-spaces.txt.

What removes extra spaces from string?

1. Remove extra white spaces with StringUtils

  • using trim(String) to remove leading and trailing whitespace, and then.
  • replacing sequences of whitespace characters by a single space.

How do you remove blank spaces at the end of a line in Linux?

Remove just spaces: $ sed ‘s/ *$//’ file | cat -vet – hello$ bye$ ha^I$ # tab is still here! Remove spaces and tabs: $ sed ‘s/[[:blank:]]*$//’ file | cat -vet – hello$ bye$ ha$ # tab was removed!

How do I remove spaces between?

replaceAll(“\s{2,}”,” “); It will replace 2 or more consecutive whitespaces with a single whitespace. If you want to print a String without space, just add the argument sep=” to the print function, since this argument’s default value is ” “.

How do I remove a tab space in Unix?

This is how to replace tab by space or replace spaces by tab in linux.

  1. replace space by tab. in bash you can run. sed -e ‘s/ /t/g’ > in vim you can do this: # first in . …
  2. replace tab to spaces. set option expandtab (abbreviated to et ) :set et|retab.

What is whitespace Linux?

Whitespace is the set of blank characters, commonly defined as space, tab, newline and possibly carriage return. Its significance in shell scripts is that command line arguments are separated by whitespace, unless the arguments are quoted.

How do you remove multiple spaces in a string in C++?

Eliminate or Remove the extra spaces from a given string in C++

  1. int check=0;
  2. char newstr[80]; //new string.
  3. int index=0; //for indexing the new string.
  4. //string from which spaces are to be removed.
  5. char str[]=”This program remove extra spaces from string”;

How do you remove multiple spaces in a string in python?

Use str. split() to remove multiple spaces in a string

Call str. split() to split str by whitespace and save the result into a list of words. Use str. join(iterable) with str as ” ” to join the words in iterable into to a single string.

How do I get rid of extra spaces in Python?

Python String strip() function will remove leading and trailing whitespaces. If you want to remove only leading or trailing spaces, use lstrip() or rstrip() function instead.

How do I remove the last blank line in Unix?

Try ${/^$/d;} this will only match an empty line if it is the last line of the file. I tried it with sed (GNU sed) 4.2. 2 and got all blank lines deleted not only the empty line if it is the last line of the file.

What is the use of awk in Linux?

Awk is a utility that enables a programmer to write tiny but effective programs in the form of statements that define text patterns that are to be searched for in each line of a document and the action that is to be taken when a match is found within a line. Awk is mostly used for pattern scanning and processing.

How do you grep blank lines in Unix?

To match empty lines, use the pattern ‘ ^$ ‘. To match blank lines, use the pattern ‘ ^[[:blank:]]*$ ‘. To match no lines at all, use the command ‘ grep -f /dev/null ‘.

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