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JESSE GORZINSKI |
Open Your i |
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Especially in the open source world, people talk about shells a lot. Instructions to “run this command in a shell” are standard fare. But, what is a shell? Simply put, a shell is a command processor. It is a program that takes input from the user and runs the appropriate commands. Conceptually, it is much like the CL entry screen you’ve used in 5250. Rather than running CL commands from the QSYS.LIB filesystem, it runs executable binaries from a hierarchical file system (stream files from the QOpenSys or root filesystems on IBM i). This includes things like open source language runtimes, common shell commands (ls, cd, pwd, cp), or any PASE executable (most open source). The best way to access a shell on IBM i is from an SSH client.
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