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Tag Archives: count(*)

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Technology Insights

Count How Many Files Are In A Directory And All Sub Directories On A Linux Server

InsightsBy alexJanuary 1, 20114 Comments

Counting files in Linux is fairly easy by simply listing the files using ls and then using the wc application. Both the ls application and the wc application are core Linux applications and should be installed by default on your server. One thing that I had forgotten how to do was how to count all…

Technology Insights

PostgreSQL: PSQL Select Distinct Output * To Generate New Table

InsightsBy alexJune 19, 2010Leave a comment

Earlier this evening I ran into a unique issue where a PostgreSQL table had been created with no primary key this allowing duplicate rows to exist in the database table. You are unable to delete such rows in a SQL table because there is no primary key. After not being able to delete the rows…

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