Portland Linux/Unix Group General Meeting Announcement
Who: Michael Dexter
What: This is a test(1): A shell scripter's guide to ubiquitous
assumption testing
Where: Zoom, flawed as it is, link below
When: Thursday, February 3rd, 2022 at 7pm
Why: The pursuit of technology freedom
"Look before you leap" is a valuable lesson in many aspects of life but
particularly in computer science and administration. Responsible
developers make extensive use of the test(1), a.k.a. "[" utility which
quickly and programmatically tests assumptions as simple as, "does this
file exist", relying on zero and non-zero return values to answer that
question. This deceptively-simple yet highly-efficient use of return
values can avoid hours of debugging and achieve goals such as
idempotence. This talk will explain the importance of the test(1)
utility, and explain similar functionality in other utilities such as
FreeBSD's grep(1), kldstat(8), and others that support "-q quiet" mode.
It will also identify opportunities for additional "quiet mode"
functionality.
About Michael
He broke it, he bought it. Michael has organized PLUG since late 2009
and did not find a speaker. By day, Michael has nursed depressed NAS
systems back to life since 2012.
https://us06web.zoom.us/j/85249530401?pwd=dWZPTllGRk1udWtVRXB0STZ2VlJXZz09
Meeting ID: 852 4953 0401
Passcode: 8675309
One tap mobile
+13462487799,,85249530401# US (Houston)
+17207072699,,85249530401# US (Denver)
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Michael Dexter
PLUG Volunteer
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