How do you do multiple sed replacements?

How do you do multiple sed replacements?

You can tell sed to carry out multiple operations by just repeating -e (or -f if your script is in a file). sed -i -e ‘s/a/b/g’ -e ‘s/b/d/g’ file makes both changes in the single file named file , in-place.

How do you replace multiple words in Unix?

1. Use the sed command to replace the “sed” string in the test file with “awk“.
2. ➜ ~ sed ‘s/sed/awk/g’ text.log.
3. # OR.
4. ➜ ~ sed -e ‘s/sed/awk/g’ text.log.
5. The sed command to complete multi-patterns replacement at once, replacing “sed” with “awk” and “command” with “cmd” in the test.

How do you replace sed?

Find and replace text within a file using sed command

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 remove multiple strings in Unix?

2 Answers

1. GNU sed (adapted from @jaypal’s comment): sed -r -i ‘s/\b(word1|word2|word3)\b//g’ file.txt.
2. FreeBSD/OSX sed : sed -E -i ” ‘s/[[:<:]](word1|word2|word3)[[:>:]]//g’ file.txt.

Can sed replace multiple lines?

Sometimes it requires to replace multiple lines of a file with any particular character or text. Different commands exist in Linux to replace multiple lines of a file. `sed` command is one of them to do this type of task.

How run multiple lines in Linux?

Using a Backslash. The backslash (\) is an escape character that instructs the shell not to interpret the next character. If the next character is a newline, the shell will read the statement as not having reached its end. This allows a statement to span multiple lines.

What is sed option?

sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scripted edits (such as ed ), sed works by making only one pass over the input(s), and is consequently more efficient.

What is S in sed command?

In some versions of sed, the expression must be preceded by -e to indicate that an expression follows. The s stands for substitute, while the g stands for global, which means that all matching occurrences in the line would be replaced.

Does sed change the original file?

By default sed does not overwrite the original file; it writes to stdout (hence the result can be redirected using the shell operator > as you showed).

How do I replace a file with another file?

To replace the content of a document with that of another one:

1. Right-click the document file the content of which you want to replace.
2. Press the Alt key and select Operations > Replace with File… from the menu bar.
3. Locate and select the file that you want to use for replacing the original file content.
4. Click OK.

How do I remove special characters in Unix using SED?

Remove CTRL-M characters from a file in UNIX

1. The easiest way is probably to use the stream editor sed to remove the ^M characters. Type this command: % sed -e “s/^M//” filename > newfilename.
2. You can also do it in vi: % vi filename. Inside vi [in ESC mode] type: :%s/^M//g.
3. You can also do it inside Emacs.

How do I remove a word from SED?

You can use the the substitute sed command changes all occurrences of the “ssh_args=-p 1222”. The same command can be used to delete the required words.