19. 䛷䜒ᛧ䛔䛛䜙䠄䠼䜵´䠅䝢䝱䞊
# yum update bash
…
===============================================
Updating:
bash x86_64 4.1.2-15.el6_5.1 updates
905 k
===============================================
…
Upgrade 1 Package(s)
Total download size: 905 k
Is this ok [y/N]: y
20. 䠄´䌔䠼䠅
$ AHO='() { baka; }; echo manuke' bash -c 'echo Hi'
bash: warning: AHO: ignoring function definition attempt
bash: error importing function definition for `AHO'
Hi