CODEWITHSUNDEEP
bash
user2093552
user2093552

Reputation: 1247

BASH - Seeking name function then

Someone please advise what it's called in bash function that reads the file and creates an array from it? Thank you

Upvotes: 0

Views: 108

Answers (2)

rici
rici

Reputation: 241971

I think you're looking for the built-in mapfile.

From help mapfile:

mapfile: mapfile [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array]
    Read lines from the standard input into an indexed array variable.

    Read lines from the standard input into the indexed array variable ARRAY, or
    from file descriptor FD if the -u option is supplied.  The variable MAPFILE
    is the default ARRAY.

    Options:
      -n count  Copy at most COUNT lines.  If COUNT is 0, all lines are copied.
      -O origin Begin assigning to ARRAY at index ORIGIN.  The default index is 0.
      -s count  Discard the first COUNT lines read.
      -t                Remove a trailing newline from each line read.
      -u fd             Read lines from file descriptor FD instead of the standard input.
      -C callback       Evaluate CALLBACK each time QUANTUM lines are read.
      -c quantum        Specify the number of lines read between each call to CALLBACK.

    Arguments:
      ARRAY             Array variable name to use for file data.

    If -C is supplied without -c, the default quantum is 5000.  When
    CALLBACK is evaluated, it is supplied the index of the next array
    element to be assigned and the line to be assigned to that element
    as additional arguments.

    If not supplied with an explicit origin, mapfile will clear ARRAY before
    assigning to it.

    Exit Status:
    Returns success unless an invalid option is given or ARRAY is readonly or
    not an indexed array.

Upvotes: 1

Chen Harel
Chen Harel

Reputation: 10072

I'm currently using windows so no bash here but this is how you do it:

value=0;

while read line
do
value=`expr $value + 1`;
arr[$value]=$line;

done < "myfile"

Upvotes: 1

Related Questions