GoDaddy 도움말

How to read and set environment variables in CentOS

Environment variables are a set of dynamic variables that are part of the operating environment for UNIX-like operating systems such as CentOS. These variables affect the behavior of processes that run in that operating system. For example, the TEMP environment variable specifies a suitable location for storing temporary files. Environment variables are set to initial values when you log in to your shell, but you can also change them during the logon session. Displaying and changing environment variables is a routine task that all CentOS users should be able to perform.

DIFFICULTY Basic - 1 | Medium - 2 | Advanced - 3
RELATED PRODUCTS CentOS-based VPS or dedicated servers

Here is a quick tutorial on how to read and set environment variables.

Read Environment Variables

Several commands can display the environment variables in CentOS.

The env command allows you to export an environment, often for the purpose of modifying the environment for a particular program. This command produces the following output:

The set command prints the name and value of each environment variable, and produces this output:

The printenv command also prints the environment variables.

You can also read the value of a specific variable with the echo command:

echo $TEST

In this example, TEST is the variable name.

Set Environment Variables

Set an environment variable with the export command:

export TEST=1

In this example, TEST is the variable name and 1 is the value to which TEST will be set.

이 글이 도움되었나요?
피드백을 보내주셔서 감사합니다. 고객 서비스 담당자에게 문의하시려면 지원 전화 번호 또는 위의 채팅 옵션을 이용하시기 바랍니다.
도와드릴 수 있어 기쁩니다! 더 도와 드릴 것이 있나요?
그것 유감스럽습니다. 혼동이 되었던 사항 또는 솔루션이 고객님의 문제를 해결하지 못했던 원인을 알려주세요.