How to read mutliline input from stdin into variable and how to print one out in shell(sh,bash)?

This is working for me:

myvar=`cat`echo "$myvar"

The quotes around $myvar are important.

bash shell stdin multiline

In Bash, there's an alternative way; man bash mentions:

The command substitution $(cat file) can be replaced by the equivalent but faster $(< file).

$ myVar=$(</dev/stdin)hellothis is test$ echo "$myVar"hellothis is test

bash shell stdin multiline

tee does the job

#!/bin/bashmyVar=$(tee)

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