cli-sedHow do I use the commandline sed tool to edit a file?
The sed
(stream editor) command line tool can be used to edit a file. This is done by using the -i
flag when running sed
and providing an expression to apply to the file.
For example, to replace the word hello
with goodbye
in a file named example.txt
, the following command can be used:
sed -i 's/hello/goodbye/g' example.txt
This command will replace all occurrences of hello
with goodbye
in the example.txt
file.
The parts of the command are:
sed
: The command to run the stream editor.-i
: The flag to indicate that the changes should be applied to the file directly.s/hello/goodbye/g
: The expression that will be applied to the file. This expression is a substitute command, which will replace all occurrences ofhello
withgoodbye
.example.txt
: The name of the file to apply the expression to.
For more information about sed
, see the following links:
More of Cli Sed
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