SQL queries - basic SQL queries, nested queries, select statements. W3schools is a good scource to prepare.
Basic Linux Commands like what du, df, top, cat. Better to go through all the commands and their combinations as well. For instance cat file.txt | cut -d "," -f$3 file2.txt

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SQL queries - basic SQL queries, nested queries, select statements. W3schools is a good scource to prepare.
Basic Linux Commands like what du, df, top, cat. Better to go through all the commands and their combinations as well. For instance cat file.txt | cut -d "," -f$3 > file2.txt

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