diff --git a/sources/tech/20161231 How to Trace Execution of Commands in Shell Script with Shell Tracing.md b/sources/tech/20161231 How to Trace Execution of Commands in Shell Script with Shell Tracing.md
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+++ b/sources/tech/20161231 How to Trace Execution of Commands in Shell Script with Shell Tracing.md	
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 How to Trace Execution of Commands in Shell Script with Shell Tracing
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