I have a file which looks as below.
HOST=localhost
PORT=8080
I want to export the above into environment. I am executing the following command to export the variables in file to environment.
cat <FileName> | xargs export
I am getting the following exception when trying to run the above command.
xargs: export: No such file or directory
It is possible to use xargs but you have to execute it as a sub-shell and use the -L 1 option to pass back one line at a time.
export $(cat FileName | xargs -L 1)
This approach would allow you to do further string manipulation if you needed. For example you can remove spaces from the file.
export $(cat FileName | tr -d ' ' | xargs -L 1)
Dieselist correctly explained the reasons why the original approach did not work. The approaches presented by Inian shall work, but a simpler way is (cf. Command Substitution):
export $(<FileName)