![]() At least on Fedora it is even required by core system parts like udev. example bellow: sed -e s/aaa/ /g file.txt - (if you want to. Sed should be available on every standard installation of any distribution. you can use sed command to find and replace string with blank space using shell script. (whole file), there are various ways to search a pattern from file. If you have to replace special characters like a dot or a comma, they have to be entered with a backslash to make clear that you mean the chars, not some control command: sed -i 's/\./\,/g' *txt But sometimes the user may feel to replace a word or string of characters all over. The s is for “substitute”, the foo is the pattern you are searching the file for, bar is the replacement string and the g stands for “globally” and makes sure that all hits on each line are replaced, not just the first one. The -i option makes sure that the changes are saved in the file – in case you are not sure that sed will work as you expect it you should use it without the option but provide an output filename. In this article, we are considering one text file as shown below. In fact, the Get-Content command in PowerShell is used to read almost any type of file content. In that cases sed can come in handy: sed -i 's/foo/bar/g' FILENAME To search for the word in PowerShell and replace it in the file we will use the string operation. When working with txt files or with the shell in general it is sometimes necessary to replace certain chars in existing files.
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