this one has me baffled.
Here are 2 versions of loading a bash array, one works, the other does not.
If I explicitly initialize the array within the script, it works fine:
zz=( 1 26 32 54 71 13 30 43 52 73 7 23 42 57 61 15 27 35 56 66 5 20 36 51 68 )
#print in reverse
for i in {24..0}
do
echo "zz[$i] is ${zz[$i]}"
done
Output as expected:
zz[24] is 68
zz[23] is 51
zz[22] is 36
zz[21] is 20
zz[20] is 5
zz[19] is 66
zz[18] is 56
zz[17] is 35
zz[16] is 27
zz[15] is 15
zz[14] is 61
zz[13] is 57
zz[12] is 42
zz[11] is 23
zz[10] is 7
zz[9] is 73
zz[8] is 52
zz[7] is 43
zz[6] is 30
zz[5] is 13
zz[4] is 71
zz[3] is 54
zz[2] is 32
zz[1] is 26
zz[0] is 1
This version does not work properly (at the moment):
# cat your_data
1 26 32 54 71 13 30 43 52 73 7 23 42 57 61 15 27 35 56 66 5 20 36 51 68
mapfile -t zz < your_data
#print in reverse
for i in {24..0}
do
echo "zz[$i] is ${zz[$i]}"
done
Output:
zz[24] is
zz[23] is
zz[22] is
zz[21] is
zz[20] is
zz[19] is
zz[18] is
zz[17] is
zz[16] is
zz[15] is
zz[14] is
zz[13] is
zz[12] is
zz[11] is
zz[10] is
zz[9] is
zz[8] is
zz[7] is
zz[6] is
zz[5] is
zz[4] is
zz[3] is
zz[2] is
zz[1] is
zz[0] is 1 26 32 54 71 13 30 43 52 73 7 23 42 57 61 15 27 35 56 66 5 20 36 51 68
So when the data is read in via mapfile, it all gets stuffed in zz[0]. Even if I explicitly set IFS to space only (" "). I am pretty sure this was working at some point so maybe it is something in my environment. I am stumped...
Thanks, Snarksdad
