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Say, I have a file foo.txt specifying N arguments
arg1
arg2
...
argN
which I need to pass to the command my_command
How do I use the lines of a file as arguments of a command?
If your shell is bash (amongst others), a shortcut for
$(cat afile)is$(< afile), so you’d write:Documented in the bash man page in the ‘Command Substitution’ section.
Alterately, have your command read from stdin, so:
mycommand < file.txt