problem when Run theupdate_dependencies.sh

[benciao-ding]

1_perception
Using dependencies in /home/benciao/AMZ/fsd_skeleton/src/1_perception/dependencies.rosinstall
./update_dependencies.sh: 行 143: wstool：未找到命令

2_estimation
Using dependencies in /home/benciao/AMZ/fsd_skeleton/src/2_estimation/dependencies.rosinstall
./update_dependencies.sh: 行 143: wstool：未找到命令

3_control
Using dependencies in /home/benciao/AMZ/fsd_skeleton/src/3_control/dependencies.rosinstall
./update_dependencies.sh: 行 143: wstool：未找到命令

fssim_interface
Using dependencies in /home/benciao/AMZ/fsd_skeleton/src/fssim_interface/dependencies.rosinstall
./update_dependencies.sh: 行 143: wstool：未找到命令

Updating all repositories now...
./update_dependencies.sh: 行 150: wstool：未找到命令