From 64cc308063247b78a1f1d28d878e5453d8557628 Mon Sep 17 00:00:00 2001
From: Managor <42655600+Managor@users.noreply.github.com>
Date: Fri, 20 Dec 2024 20:59:35 +0200
Subject: [PATCH] {: add page (#15234)

---
 pages/common/{.md | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 pages/common/{.md

diff --git a/pages/common/{.md b/pages/common/{.md
new file mode 100644
index 000000000..d8d56788f
--- /dev/null
+++ b/pages/common/{.md
@@ -0,0 +1,36 @@
+# Curly brace
+
+> Multipurpose shell syntax.
+> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-hash>.
+
+- Isolate variable names:
+
+`echo ${HOME}work`
+
+- Brace expand sequences:
+
+`echo {1..3} {a..c}{dir1,dir2,dir3}`
+
+- Check if `variable` is set before returning text:
+
+`echo ${variable:+variable is set and contains $variable}`
+
+- Set default values in case `variable` is unset:
+
+`echo ${variable:-default}`
+
+- Return `variable` length in characters:
+
+`echo ${#variable}`
+
+- Return a string slice:
+
+`echo ${variable:3:7}`
+
+- Recursively expand a `variable`:
+
+`echo ${!variable}`
+
+- Capitalize all the characters:
+
+`echo ${variable^^}`