How to sort lines by length in Linux?

I have a text file with many lines of text.

In Linux, how to sort the lines by their length?

You can make use of awk together with the sort program like

awk '{ print length(), $0 | "sort -n" }' /path/to/text/file

Here, we use awk to calculate the text length and sort -n to sort by the length as numbers.

If you want the original text only, you may use cut or awk again to filter away the leading number for the length.