How do you replace a string in a file in shell script?

The procedure to change the text in files under Linux/Unix using sed:

1. Use Stream EDitor (sed) as follows:
2. sed -i ‘s/old-text/new-text/g’ input.
3. The s is the substitute command of sed for find and replace.
4. It tells sed to find all occurrences of ‘old-text’ and replace with ‘new-text’ in a file named input.

How do I replace a space in a text file?

A few choices:

1. The classic, use tr : tr ‘ ‘ ‘\n’ < example.
2. Use cut cut -d ‘ ‘ –output-delimiter=$’\n’ -f 1- example.
3. Use sed sed ‘s/ /\n/g’ example.
4. Use perl perl -pe ‘s/ /\n/g’ example.
5. Use the shell foo=$(cat example); echo -e ${foo// /\\n}

How do you replace a word with spaces in Linux?

The y command in sed replaces all occurrences of the first set of characters (only + here) with the corresponding character in the second set (only space here). The s command replaces the text that matches a regular expression with some text.

How do I remove spaces between words in shell script?

When insisting on sed

1. sed ‘s/ //g’ input. txt > no-spaces. txt.
2. sed ‘s/[[:blank:]]//g’ input. txt > no-spaces. txt.
3. sed ‘s/[[:space:]]//g’ input. txt > no-spaces. txt.

How do you change a comma with spaces in a text file?

Replace tabs by spaces or comma Notepad++

1. Open the file in Notepad++
2. Press Ctrl + F to open Find Box. Select Replace tab. Add /t to Find what field and a space or a comma (,) as per what’s your need to the Replace with filed.
3. Click on Replace All. All tabs will be replaced by spaces/comma’s.

How do you replace spaces with commas?

1. Open the Replace dialog Ctrl + H.
2. Type in a single space character, in the Find what: zone.
3. Type in a , character, in the Replace with: zone.
4. Select the Normal search mode.
5. Click on the Replace All button.

How do I remove spaces from a string in Linux?

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 change tab space in Linux?

1. replace space by tab

1. sed -e ‘s/ /\t/g’ test.py > test.new.py.
2. # first in . vimrc set up :set expandtab :set tabstop=4 # or you can do this :set tabstop=4 shiftwidth=4 expandtab # then in the py file in command mode, run :retab!
3. :set noet|retab!
4. :set et|retab.

How do I remove blank spaces in a text file?

To delete all spaces in the file, replace ‘ +’ with ” (quotes only for demonstration, please remove them). You need to have the checkbox “Regular expression” checked. To remove all spaces and tabs, replace ‘[ \t]+’ with ” (remove quotes).

How do I remove blank 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:]]. $ echo “$Var are very popular now.”

How to use sed command to replace a string with another string?

How to use sed command to replace a string with another string. The syntax is as follows: sed -i ‘s/ old-word / new-word /g’ *.txt. GNU sed command can edit files in place (makes backup if extension supplied) using the -i option. If you are using an old UNIX sed command version try the following syntax:

How to change the text in files under Linux/Unix using SED?

The procedure to change the text in files under Linux/Unix using sed: Use Stream EDitor (sed) as follows: The s is the substitute command of sed for find and replace It tells sed to find all occurrences of ‘old-text’ and replace with ‘new-text’ in a file named input.txt Verify that file has been updated:

How do I replace ‘Linux’ with ‘Unix’?

For instance, replace a string ‘Unix’ with ‘Linux’: Here is another bash string manipulation example that replaces all occurrences of ‘Linux’ with ‘Unix’: message = “I love Linux. Linux is awesome but FreeBSD is better too. Try it out.”

How to replace a string with another string in a file?

The sed command is designed for this kind of work i.e. find and replace strings or words from a text file under Apple OX, *BSD, Linux, and UNIX like operating systems. The perl can be also used as described below to replace a string with another string/word in all files.