I’ve looked at answers of how to remove duplicate words for the last 20 minutes, trying to make them work for my use case, but that didn’t work.
I have a small command that deletes special characters and transforms spaces into dashes,
echo "[[[h[el]lo - w{o}rld%^& -text" | tr -d '?$#@;:/\="<>%{}|^~[]&`' | tr ' ' '-'
and that produces the following output
hello---world--text
That runs perfectly, but I also want to add something else to that command, maybe another pipe, that removes the dashes that repeat
ex: I want it to transform, from the produced output, to:
hello-world-text
How can I do this in the most POSIX compliant way possible?
PS: Please tell me if there’s a more efficient way to accomplish what I already made there
>Solution :
You can use the -s flag for that:
echo "[[[h[el]lo - w{o}rld%^& -text" | tr -d '?$#@;:/\="<>%{}|^~[]&`' | tr -s ' ' '-'
-s, --squeeze-repeats
replace each sequence of a repeated character that is listed in the last
specified SET, with a single occurrence of that character