Fabian Lee : Software Engineer

Bash: while statement with ‘read’ not processing last value

March 26, 2021
Categories: Scripting

An often unexpected behavior of the ‘read‘ utility within a ‘while’ statement is that the last value will not be processed if it does not end with the delimiter. For example, if you are using while to read multiple lines and the last line ends with just EOF (instead of a linefeed followed by EOF), … Bash: while statement with ‘read’ not processing last value

Bash: Reading input from the console while looping over output of command

September 23, 2018
Categories: Linux, Scripting

If you are using the direct output of a command to feed a while loop in BASH, you may still want to take user input inside that loop. For example, if you need the user to confirm each line by pressing <ENTER>. Take a simple example like this: grep one test.txt | while read -r … Bash: Reading input from the console while looping over output of command