{"Entry":{"collection":"psql","key":"cmd-67-65-74-65-6e-76","name":"\\getenv","aliases":["\\getenv"],"metadata":{"aliases":["\\getenv"],"category":"Scripting and assistance","content_hash":"7bf424027f9c48fd031cd70bf82c735b83724f1242b4eaae20f197f4d7b59d94","imported_at":"2026-09-30T00:40:45.031417+08:00","name":"\\getenv","name_zh":"","slug":"cmd-67-65-74-65-6e-76","summary":"Gets the value of the environment variable env_var and assigns it to the psql variable psql_var . If env_var is not defined in the psql process's environment, psql_var is not changed. Example:"}},"Definition":{"Collection":"psql","Key":"cmd-67-65-74-65-6e-76","SourceDatabase":"center","Version":"18","SourceTable":"psql_command","SourceKey":"cmd-67-65-74-65-6e-76","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","Facts":{"command":"\\getenv","comparison_data":{"definition":"Gets the value of the environment variable env_var and assigns it to the psql variable psql_var . 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If \u003cem class=\"replaceable\"\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e is not defined in the \u003cspan class=\"application\"\u003epsql\u003c/span\u003e process's environment, \u003cem class=\"replaceable\"\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e is not changed. 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If env_var is not defined in the psql process's environment, psql_var is not changed. Example:","BodyHTML":"\u003cdiv\u003e\u003cdl\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-GETENV\"\u003e\u003cspan\u003e\u003ccode\u003e\\getenv \u003cem\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e \u003cem\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eGets the value of the environment variable \u003cem\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e and assigns it to the \u003cspan\u003epsql\u003c/span\u003e variable \u003cem\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e. If \u003cem\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e is not defined in the \u003cspan\u003epsql\u003c/span\u003e process\u0026#39;s environment, \u003cem\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e is not changed. Example:\u003c/p\u003e\n\u003cpre\u003e=\u0026gt; \u003cstrong\u003e\u003ccode\u003e\\getenv home HOME\u003c/code\u003e\u003c/strong\u003e\n=\u0026gt; \u003cstrong\u003e\u003ccode\u003e\\echo :home\u003c/code\u003e\u003c/strong\u003e\n/home/postgres\n\u003c/pre\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","ContentHash":"a140cbf041e515d6086f3ad586e61c6828b1b25e52b69357855a0bacfe46a531","Payload":{"description":["Gets the value of the environment variable env_var and assigns it to the psql variable psql_var . If env_var is not defined in the psql process's environment, psql_var is not changed. Example:"],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-GETENV\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\getenv \u003cem class=\"replaceable\"\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e \u003cem class=\"replaceable\"\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eGets the value of the environment variable \u003cem class=\"replaceable\"\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e and assigns it to the \u003cspan class=\"application\"\u003epsql\u003c/span\u003e variable \u003cem class=\"replaceable\"\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e. If \u003cem class=\"replaceable\"\u003e\u003ccode\u003eenv_var\u003c/code\u003e\u003c/em\u003e is not defined in the \u003cspan class=\"application\"\u003epsql\u003c/span\u003e process's environment, \u003cem class=\"replaceable\"\u003e\u003ccode\u003epsql_var\u003c/code\u003e\u003c/em\u003e is not changed. Example:\u003c/p\u003e\n\u003cpre class=\"programlisting\"\u003e=\u0026gt; \u003cstrong class=\"userinput\"\u003e\u003ccode\u003e\\getenv home HOME\u003c/code\u003e\u003c/strong\u003e\n=\u0026gt; \u003cstrong class=\"userinput\"\u003e\u003ccode\u003e\\echo :home\u003c/code\u003e\u003c/strong\u003e\n/home/postgres\n\u003c/pre\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","related":[{"label":"psql command-line options and complete manual","url":"/wiki/tool/psql/?v=18"}],"sections":[],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\getenv","url":"/wiki/psql/cmd-67-65-74-65-6e-76/?v=18"},"modifiers":"None listed in this signature"}],"title":"Spellings in this manual definition"}]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":[{"Version":"18","Ordinal":0,"Command":"\\getenv","Signature":"\\getenv psql_var env_var","Modifiers":[]}],"SQLState":null,"Evidence":null}