Unix Shell: The Art of I/O Redirection

One of the primary tricks in my sysadmin bag-o-tricks is Input/Output Redirection; I have found that while many people use Shell I/O Redirection throughout their day not everyone fully understands why and how it works. The Input and Output In the Unix environment there is always 3 streams open stdin, stdout, & stderr; these special streams are used for interacting with the user input and program output within the Unix/Linux shell environment....

 · 4 min · Benjamin Cane