The export command is used to display and set system environment variables.
Syntax format: export [parameter]
Common parameters:
Example
# 列出当前所有变量export # 过滤PATH export | grep PATH # 设置变量ENVI export ENVI=100 # 常见的追加环境变量的值，如PATH export PATH=/home/xugaoxiang/bin:$PATH
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