How to sort and filter data in a text file using Bash?

To sort and filter data in a text file using Bash, you can utilize the following commands:

1. Sorting Data:

   • sort: This command is used to sort data in a text file. By default, it sorts data in ascending order.

     sort filename.txt

   • sort -r: To sort data in descending order, use the -r flag.

     sort -r filename.txt

   • sort -k: If you want to sort data based on a specific column, use the -k flag followed by the column number. For example, to sort based on the second column:

     sort -k 2 filename.txt

2. Filtering Data:

   • grep: This command is used for filtering data based on specific patterns or regular expressions. It outputs the lines that match the pattern.

     grep "pattern" filename.txt

   • grep -i: To perform a case-insensitive search, use the -i flag.

     grep -i "pattern" filename.txt

   • grep -v: If you want to exclude lines matching a specific pattern, use the -v flag.

     grep -v "pattern" filename.txt

   • awk: This command is a powerful text-processing tool that allows you to filter data based on specific conditions. For example, to filter lines where the second column value is greater than 10:

     awk '$2 > 10' filename.txt

   • sed: This command is used for filtering and transforming text. For example, to filter lines that contain a specific pattern:

     sed '/pattern/!d' filename.txt

Note: Replace filename.txt with the actual name of your text file.