Q&A

How do I replace a string that contains multiple files in a directory?

How do I replace a string that contains multiple files in a directory?

Linux Command Line: Find & Replace in Multiple Files

1. grep -rl: search recursively, and only print the files that contain “old_string”
2. xargs: take the output of the grep command and make it the input of the next command (ie, the sed command)

How do I convert a string to multiple files in Linux?

Basic Format

1. matchstring is the string you want to match, e.g., “football”
2. string1 would ideally be the same string as matchstring, as the matchstring in the grep command will pipe only files with matchstring in them to sed.
3. string2 is the string that replace string1.

How do I grep two files at once?

To search multiple files with the grep command, insert the filenames you want to search, separated with a space character. The terminal prints the name of every file that contains the matching lines, and the actual lines that include the required string of characters. You can append as many filenames as needed.

Which command is used to replace a pattern in file with another pattern?

Replacing or substituting string : Sed command is mostly used to replace the text in a file.

Replacing the nth occurrence of a pattern in a line : Use the /1, /2 etc flags to replace the first, second occurrence of a pattern in a line.

Which command will merge two files?

Type the cat command followed by the file or files you want to add to the end of an existing file. Then, type two output redirection symbols ( >> ) followed by the name of the existing file you want to add to.

How do I search for text in multiple files in Linux?

How do I change all occurrences of a word in Unix?

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 to use find and SED to replace multiple words?

With the sed command and find command you can replace all instances of a word or multiple words in multiple files To replace “oldWord” with “newWord” in all the files *.c :

How can I use sed to find files?

This can be done by using commands such as find or grep to recursively find files in the directory and piping the file names to sed. The following command will recursively search for files in the current working directory and pass the file names to sed.

How to search and replace text in multiple files?

Assuming that you want to search for the string search through multiple files and replace it with replace, this is the one-liner: grep -RiIl ‘search’ | xargs sed -i ‘s/search/replace/g’ Let me now dissect it and take a quick look at the different tools in use.

Which is the correct argument for SED to change multiple files?

I’m surprised nobody has mentioned the -exec argument to find, which is intended for this type of use-case, although it will start a process for each matching file name: Alternatively, one could use xargs, which will invoke fewer processes: