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diff --git a/Process substition (tmp file).md b/Process substition (tmp file).md new file mode 100644 index 0000000..c9103c2 --- /dev/null +++ b/Process substition (tmp file).md @@ -0,0 +1,15 @@ +--- +tags: + - bash + - howto +--- +[[Bash]] [[Parameter subsitution]] [[Null substitution]] + +Process substitution connects the output of a command to a file. This enables another command to accept the output of multiple commands as files if it expects files. + +An example of this is `diff`, which outputs the difference between two files: +```bash +diff <(ls dirA) <(ls dirB) +``` + +> Important! Don't but the <() inside quotes.. it will report: cannot find file
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