From 27ca5e9a7b50fd6f2edc5a4fd34556c4656471b0 Mon Sep 17 00:00:00 2001 From: iProbe Date: Sat, 12 Aug 2023 16:15:50 +0800 Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=20'shell/shell=E5=8F=98?= =?UTF-8?q?=E9=87=8F=E6=8F=90=E5=8F=96=E8=B5=8B=E5=80=BC.md'?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- shell/shell变量提取赋值.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/shell/shell变量提取赋值.md b/shell/shell变量提取赋值.md index ff713e5..fce489f 100644 --- a/shell/shell变量提取赋值.md +++ b/shell/shell变量提取赋值.md @@ -1,5 +1,5 @@ -|-|-| |表达式|含义| +|-|-| |${var:-aa}|若var为空或未设定, 返回aa, var值不变| |${var:=aa}|若var为空或未设定, 返回aa, var=aa| |${var:+aa}|若var有值 返回aa, var值不变|