- Linux File Content
There are many commands which help to look at the contents of a file. Now we’ll look at some of the commands like head, tac, cat, less & more and strings. Head The ‘head’ command displays the starting content of a file. By default, it displays starting 10 lines of any file. head {filename} […]
- Linux File
In Linux system, a file doesn’t include only text files, images and compiled programs, partitions, hardware device drivers and directories. Linux consider everything as as file are also files. Create a text file touch test.txt // using vi vi tes.txt // using vim vim test.txt Update content of an…
- Linux Directory
A directory is a file which job is to store the file names and the related information of its content. All the files, whether ordinary, special, or directory, are contained in directories. Unix uses a hierarchical structure for organizing files and directories. This structure is often referred to…
- Linux Introduction
Linux is being used in our everyday lives in almost every device. As a developer it’s very important that you understand the basic use of linux for your day to day work. Some of your daily tasks may not require command line interaction as GUI for development tools rises but the 20% of the time […]
- Postgres – EXPLAIN and Query Performance
How to read a plan instead of guessing. EXPLAIN versus EXPLAIN ANALYZE and the danger of running the second one on an UPDATE, what BUFFERS tells you that timing does not, the scan and join nodes you will actually meet, and the single most useful signal in the output — the gap between estimated and actual rows. Plus pg_stat_statements for finding the query worth fixing.