cli-sedHow can I use a variable with the sed command line tool?
The sed command line tool can be used to perform text manipulation on a file or stream. To use a variable with the sed command line tool, you can use the -e (--expression) option. The -e option allows you to pass an expression to sed, which can include a variable. For example:
my_var="hello" sed -e "s/world/$my_var/" test.txt
The example above replaces the word "world" with the contents of the variable
my_var in the file
The parts of the code are as follows:
my_var="hello"- this sets the variable
my_varto the value
sed -e "s/world/$my_var/" test.txt- this runs the sed command, using the expression
s/world/$my_var/on the file
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