linux shell 命令之cut

cut -c3 TEACHER.db #提取TEACHER.db第三个字符
L
L
H
L
Z
cut -c1-5 TEACHER.db #提取TEACHER.db第1个到第5个字符
B Liu
C Lin
D Hou
J Luo
Y Zha
cut -d: -f1,4 TEACHER.db #提取TEACHER.db的第1域和第4域
B Liu:China
C Lin:Canada
D Hou:China
J Luo:China
Y Zhang:Australia
cut -d: -f1-3 TEACHER.db #提取TEACHER.db的第1域到第3域
B Liu:Shanghai Jiaotong University:Shanghai
C Lin:University of Toronto:Toronto
D Hou:Beijing University:Beijing
J Luo:Southeast University:NanJing
Y Zhang:Victory University:Melbourne