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I need a one-liner to remove the first five characters on any line of a text file. How can I do that with sed?
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To delete a line, we'll use the sed “d” command. Note that you have to declare which line to delete. Otherwise, sed will delete all the lines.
Removing the first n characters To remove the first n characters of a string, we can use the parameter expansion syntax ${str: position} in the Bash shell.
There is no available to delete all contents of the file. How to delete all contents of the file using sed command.
Use cut:
cut -c6- This prints each line of the input starting at column 6 (the first column is 1).
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sed 's/^.....//' means
replace ("s", substitute) beginning-of-line then 5 characters (".") with nothing.
There are more compact or flexible ways to write this using sed or cut.
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