How to find lines that contain more than a single whitespace between strings in unix?

How to find lines that contain more than a single whitespace between strings in unix?

unix grep

unix

Writing my own shell in C, how do I run Unix executables?

c shell unix path

unix

How to solve this fork() example in c

c unix process operating-system fork

unix

zombie process remove without wait C

c linux unix

unix

Explaining the rm ./-rf "trick"

bash unix command-line rm

unix

Move only files recursively from multiple directories into one directory with mv

bash unix gnu directory mv

unix

Need alternative to readarray/mapfile for script on older version of Bash

bash shell unix

unix

How to check if curl was successful and print a message?

bash shell unix curl terminal

unix

Print many specific rows from a text file using an index file

bash unix awk sed

unix

using sed, remove everything before the first occurence of a character

unix sed

unix