ubuntu:environment_variables
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| ubuntu:environment_variables [2019/12/15 20:58] – peter | ubuntu:environment_variables [2020/07/15 09:30] (current) – external edit 127.0.0.1 | ||
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| - | ===== Commands for Environment Variables ===== | + | ===== Commands for managing |
| Environment variables are case-sensitive and usually they are created in upper case. | Environment variables are case-sensitive and usually they are created in upper case. | ||
| ^Command^Description^ | ^Command^Description^ | ||
| - | |echo $VARIABLE|To display value of a variable| | + | |echo $VARIABLE|To display value of a variable.| |
| - | |printenv|Displays all or part of environment variables| | + | |printenv|Displays all or part of environment variables,| |
| |env|Displays all exported environment variables.| | |env|Displays all exported environment variables.| | ||
| - | |VARIABLE_NAME= variable_value|Create a new variable| | + | |VARIABLE_NAME= variable_value|Create a new variable.| |
| - | |set|Display the name and value of each shell variable| | + | |set|Display the name and value of each shell variable.| |
| - | |unset|Remove a variable| | + | |unset|Remove a variable.| |
| - | |export Variable=value|To set value of an environment variable| | + | |export Variable=value|To set value of an environment variable.| |
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ubuntu/environment_variables.1576443488.txt.gz · Last modified: 2020/07/15 09:30 (external edit)