What is meant by '>' and' 'cat' in bash?


#1

I am not getting the proper meaning of ‘<’ and ‘cat’ in Bash. So it would be greatly appreciated if someone tells me about it in a simple way.
Thank you


#2

cat is a very simple program that repeats what it reads
if a filename is provided cat reads from that file, otherwise it reads from standard input

< is an operator in bash that redirects the content of a file to standard input, similarly, > redirects standard output to a file

So, yes, cat can be used instead of < , but you would additionally need to pipe cat’s output into the next program with | so < would make more sense in that case unless cat somehow fits better anyway

also, a whole lot of programs, similar to cat, accept a filename to read from, so neither cat or < would be needed in those cases


#3

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