In IN5800 we will use Bash for

• downloading files
• gluing programs together
• executing SQL- and SPARQL-queries
• applying mappings
• invoking the semantic reasoner
• etc.

Guides and tutorials

• Bash Guide for Beginners
• Guide to Unix Commands

Commonly used commands in IN5800

Below is a list of commonly used commands that are useful for making data pipelines.

• cd – Change working directory
• mkdir – Create a new folder
• rm – Delete file(s)
• grep – Search within text and files
• find – List and search for files
• sed – Search and replace in file
• wget – Download file(s)
• unzip – Unpack a Zip-file
• iconv – Change encoding of a file
• cat – Print content of file
• | (pipe) – Send output from one command to another
• ssh – Connect to remote computer (e.g. at IFI)

To learn more about a patricular command, simply write man <command> (where <command> is replaced by the particular command’s name) in any Bash-shell.

In adition to the ones listed above, we will use Bash to invoke other programs. Below is a list of such programs.

• git – Interact with a Git-repo
• psql – Interact with a Postgres database
• java – Execute a Java program, such as
  • lutra – Work with OTTR templates and instances
  • kiwicli – Interact with the KiWi Triplestore
• make – Execute a Makefile (see Make on this Wiki)
• ogr2ogr – Transform spatial formats to PostgreSQL