Co robi ENVSUBST użycie. Konsola stdin to stdout, replacing any environment variable string, such.

Czy przydatne?

Polecenie envsubst

Wykonanie, użycie: Substitutes environment variables in a shell string or script. When used with no options, copies stdin to stdout, replacing any environment variable string, such as $VARIABLE or ${VARIABLE}, with the appropriate environment variable value. So, "My editor is $EDITOR" would be converted to "My editor is /usr/bin/emacs." Specifying a shell format limits the substitutions to those variables referenced in the shell format

Opcje wykonania envsubst w konsoli

-h,--help

Print help message and then exit.

 -V,--version

Print version information and then exit.

 -v,--variables

Display the variables referenced in the shell format, and then exit.

Przykłady envsubst działanie w Słownik polecenie E

Przykład ENVSUBST użycie :
Jak użyć function and macro names defined in a programming source file . etags generates tags for use by emacs . (ctags produces an equivalent tags file for use with vi .) More than one file may be specified co znaczy.
Przykład ENVSUBST użycie :
Jak użyć files for lines that match an extended regular expression regexp . egrep doesn't support the regular expressions (, ), n , <, >, {, or }, but it does support the other expressions, as well as krzyżówka.
Przykład ENVSUBST użycie :
Jak użyć administration command. Edit filesystem quotas using a text editor. When edits are complete, edquota writes the new information to the binary quota files. Uses the editor specified in the EDITOR co to jest.
Przykład ENVSUBST użycie :
Jak użyć as expressions and print the results. Arguments and operators must be separated by spaces. In most cases, an argument is an integer, typed literally or represented by a shell variable. There are słownik.
Przykład ENVSUBST użycie :
Jak użyć environment or, if an environment variable is specified, set it to a new value and display the modified environment. If command is specified, execute it under the modified environment czym jest.