How do I remove blank spaces in Linux?

Simple solution is by using grep (GNU or BSD) command as below.

1. Remove blank lines (not including lines with spaces). grep . file.txt.
2. Remove completely blank lines (including lines with spaces). grep “\S” file.txt.

How do I remove white space in bash?

Use sed ‘s/^ *//g’, to remove the leading white spaces. There is another way to remove whitespaces using `sed` command. The following commands removed the spaces from the variable, $Var by using `sed` command and [[:space:]].

How do I remove a space in Unix?

To remove whitespaces from your document, you can use various tools such as awk, sed, cut, and tr. In some other articles, we have discussed the use of awk in removing the whitespaces….Sed Remove Whitespace

1. For reformatting the source code.
2. For cleaning up data.
3. For simplifying the command-line output.

How do I remove all white spaces from a string in Java?

How do you remove all white spaces from a string in java?

1. public class RemoveAllSpace {
2. public static void main(String[] args) {
3. String str = “India Is My Country”;
4. //1st way.
5. String noSpaceStr = str.replaceAll(“\\s”, “”); // using built in method.
6. System.out.println(noSpaceStr);
7. //2nd way.

Which method can be used to remove any whitespace from both the beginning and the end of a string?

The trim() method will remove both leading and trailing whitespace from a string and return the result.

What is trailing whitespace?

Trailing whitespace is any spaces or tabs after the last non-whitespace character on the line until the newline.

How do I get rid of extra spaces in a text file 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.

Which function is used to remove whitespace from the string in Java?

replaceAll() method
To remove all white spaces from String, use replaceAll() method of String class with two arguments, i.e.

How do I squeeze white space in TR?

If you want to squeeze “white space” you will want to use tr’s pre-defined character sets “:blank:” (horizontal whitespace tab and space) or “:space:” (verical whitespace) : Examples were run on Red Hat 5 (GNU tr).

How to delete all whitespace in a text file?

In order to wipe all whitespace including newlines you can try: cat file.txt | tr -d ” ” You can also use the character classes defined by tr (credits to htompkinscomment): cat file.txt | tr -d “[:space:]” For example, in order to wipe just horizontal white space: cat file.txt | tr -d “[:blank:]” Share Improve this answer

How to normalize whitespace to a single space?

If you want to squeeze “white space” you will want to use tr’s pre-defined character sets “:blank:” (horizontal whitespace tab and space) or “:space:” (verical whitespace) : Examples were run on Red Hat 5 (GNU tr). In my case I wanted to normalize all whitespace to a single space so I could rely on the space as a delmitter.

How do I remove double spacing from text using the tr command?

Another champion option of the tr command is -s (–squeeze-repeats). Squeeze means to take any number of repeated characters and replace then with a single instance of that character. This is often used to remove double spacing or excessive empty lines. To demonstrate this I created the following test.txt file: First Line with weird spacing.