Linux Learning: Environment variables

1. Environment variable File

/etc/profile

2. Output environment variable value

Echo $PATH

3,linux:-bash: * *: Command not found, solve

To prevent the above exception, initialize the environment variable first:

1. Modify Profile: (All users)

#vi/etc/profile
Join: Export path= $PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
Save exit.

2. Modify the. bashrc file: (Individual users)

[[Email protected] bin]# CD

[email protected] ~]# cat. Bash_profile

#vi. Bash_profile

Join: Export path= $PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

Save exit.

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Note: After the modification, to refresh: The following modified/etc/profile, refresh command: Source/etc/profile

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Linux Learning: Environment variables