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Forum: Shell Programming and Scripting 02-03-2018

$(< file ) and $( cat file )

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It does not work that way. $(<file) is a special...

It does not work that way. $(<file) is a special case, which is a faster alternative to $(cat file). If you are using anything other than just a file, it becomes something else. $( ... ) is just...

Forum: Shell Programming and Scripting 02-02-2018

$(< file ) and $( cat file )

11,903

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They are only equivalent in bash, ksh93 and zsh. ...

They are only equivalent in bash, ksh93 and zsh. $(< file) is faster than $(cat file), but the latter is POSIX compliant whereas the former is not.

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