How do I read the first line of a file using cat?

How do I read the first line of a file using cat?

bash file-io cat

bash

Why sudo cat gives a Permission denied but sudo vim works fine?

bash shell echo cat

bash

Recursive cat all the files into single file

linux bash unix grep cat

bash

Remove the first word in a text stream

bash sed awk cat

bash

Bash: add string to the end of the file without line break

linux bash awk echo cat

bash

Fastest way to print a single line in a file

bash sed benchmarking head cat

bash

Why can't you use cat to read a file line by line where each line has delimiters

linux bash for-loop cat

bash

How to split files up and process them in parallel and then stitch them back? unix

bash perl unix split cat

bash

HP-UX - How can I read a text file from tar archive without extracting it?

bash text tar cat hp-ux

bash

BASH: Global variables aren't updateable in a function only when that function is piped (simple example)

linux bash variables cat

bash

bash cat multiple files

linux bash shell cat

bash

bash cat multiple files content in to single string without newlines

bash file cat

bash

do I need cat to write a heredoc to a file?

bash cat

bash

download files using bash script using wget

bash loops wget cat

bash

Copy contents of all files into one file in bash different sequence

bash cat

bash