bash - How to use mapfile readarray - Unix Linux Stack Exchange mapfile reads the contents of a file to an array, and if you use "${array[@]}" in a context like an assignment or <<< that takes only a single string, it concatenates all the array elements to a single string
Creating an array from a text file in Bash - Stack Overflow 47 mapfile and readarray (which are synonymous) are available in Bash version 4 and above If you have an older version of Bash, you can use a loop to read the file into an array:
Cant pipe in bashs mapfile . . . but why? - Super User From man 1 bash: Each command in a pipeline is executed as a separate process (i e , in a subshell) Such subshells inherit variables from the main shell but they are independent This means mapfile in your original command operates on its own myarr Then echo (being outside the pipe) prints empty myarr (which is the main shell's myarr) This command works differently:
bash - Does readarray allow to specify line delimiter? - Unix Linux . . . Since bash version 4 4, yes it does From the release announcement Bash-4 4 Release Available: The most notable new features are mapfile's ability to use an arbitrary record delimiter; (readarray being a synonym for mapfile) The description in man bash is -d The first character of delim is used to terminate each input line, rather than newline
Capture multiline output as array in bash - Stack Overflow imo: the best answer here, mapfile by far is faster than the other methods, i was working with output lines > 14,000 entries, mapfile worked almost instantaneously rather than using an external program, i use the rule of thumb to never involve other programs to do the work that the language is supposed to do for itself, and bash is no exception
Reading output of a command into an array in Bash Related: Looping through the content of a file in Bash since reading the output of a command through process substitution is similar to reading from a file
Bash syntax mapfile input redirection - Stack Overflow mapfile reads from standard input so to get it to read from a specific file you use you redirect standard input from the file < path to somefile but as I just said the expansion of <(command) is a filename so you can use that in the input redirection
Bash 5 - mapfile readarray command not found - Stack Overflow I am on MacOS Cagalina 10 15 4 I thought mapfile and readarray are available with Bash 4 and later but got below May I ask what I am doing wrong? $ brew install bash $ bash --version GNU bash, v