[kondo@lxplus7101]~/SCTcalib/Hanna/znew% t="a b c"
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% echo $t
a b c

[kondo@lxplus7101]~/SCTcalib/Hanna/znew% y=`echo $t | cut -d\   -f1`;
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% echo $y
a
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% y=`echo $t | cut -d\   -f2`;
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% echo $y
b
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% y=`echo $t | cut -d\   -f3`;
[kondo@lxplus7101]~/SCTcalib/Hanna/znew% echo $y
c