How do I remove special characters from a text file in Linux?

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 special characters in Linux?

Remove files with names containing strange characters such as spaces, semicolons, and backslashes in Unix

1. Try the regular rm command and enclose your troublesome filename in quotes.
2. You can also try renaming the problem file, using quotes around your original filename, by entering: mv “filename;#” new_filename.

How do I remove a specific pattern from a Unix file?

N command reads the next line in the pattern space. d deletes the entire pattern space which contains the current and the next line. Using the substitution command s, we delete from the newline character till the end, which effective deletes the next line after the line containing the pattern Unix.

How do I delete one word from a file in Linux?

How do I match and remove (delete) the words “ssh_args=-p 1222” from config file using sed command under Linux or Unix like operating systems? 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.

How do you remove special characters in sed?

how to remove special characters using sed

1. Actually, you may remove it the same way you added it, sed -r “s///g” – Wiktor Stribiżew. Jul 13 ’18 at 9:04.
2. Try perl -pe ‘s/\P{ASCII}//g’ to remove all non-ASCII chars. Or, all non-ASCII letters: perl -CIOED -pe ‘s/(?![ A-Za-z])\p{L}//g’ – Wiktor Stribiżew.

How do you remove a single line in Unix?

To Remove the lines from the source file itself, use the -i option with sed command. If you dont wish to delete the lines from the original source file you can redirect the output of the sed command to another file.

How do I delete a matching pattern in Unix?

Just like in VIM, we will be using the d command to delete specific pattern space with SED. To begin with, if you want to delete a line containing the keyword, you would run sed as shown below. Similarly, you could run the sed command with option -n and negated p , (! p) command.

Which command is used to delete a word in Linux?

rm command
The rm command deletes files in a Linux. The command unlinks the data from the file name, allowing the user to overwrite on that particular storage space.

How do I remove a string from a file?

How to delete a string inside a file(. txt) in java?

1. Retrieve the contents of the file as a String.
2. Replace the required word with an empty String using the replaceAll() method.
3. Rewrite the resultant string into the file again.

How do I remove all special characters from a string?

Similarly, if you String contains many special characters, you can remove all of them by just picking alphanumeric characters e.g. replaceAll(“[^a-zA-Z0-9_-]”, “”), which will replace anything with empty String except a to z, A to Z, 0 to 9,_ and dash.