diff --git a/.zshrc2 b/.zshrc2
index e2009ab..68f9327 100644
--- a/.zshrc2
+++ b/.zshrc2
@@ -88,14 +88,14 @@ alias "se"='sudo -sE'
 alias "pbd"='ping baidu.com'
 alias "p114"='ping 114.114.114.114'
 alias "p666"='ping6 2001:da8::666'
-alias "git-branches"='git for-each-ref --sort=-committerdate refs/heads refs/remotes --format="%(authordate:format:%y-%m-%d %H:%M)|%(color:red)%(objectname:short)|%(color:yellow)%(refname:short)%(color:reset)|%(color:reset)%(authorname): %(color:green)%(subject)" --color=always | column -ts"|"'
-sibd() { ssh -p 12022 root@$1${1:+.}ibd.ink }
-sob() { ssh -p 24022 root@$1${1:+.}ob.ac.cn }
-snasp() { ssh -o ProxyJump="ssh@nasp.ob.ac.cn:36022" dictxiong@$1 }
 case $(bash "$DOTFILES/tools/common.sh" get_os_type) in
     macos  ) alias l='ls -lAGh -D "%y-%m-%d %H:%M"' ;;
     *      ) alias l='ls -lAGh --time-style="+%y-%m-%d %H:%M"' ;;
 esac
+sibd() { ssh -p 12022 root@$1${1:+.}ibd.ink }
+sob() { ssh -p 24022 root@$1${1:+.}ob.ac.cn }
+snasp() { ssh -o ProxyJump="ssh@nasp.ob.ac.cn:36022" dictxiong@$1 }
+git-branches() { git for-each-ref --sort=-committerdate refs/heads refs/remotes --format="%(authordate:format:%y-%m-%d.%a %H:%M %z)|%(color:red)%(objectname:short)|%(color:yellow)%(refname:short)%(color:reset)|%(color:reset)%(authorname): %(color:green)%(subject)" --color=always --count=${1:-10} | column -ts"|" }
 piv-agent()
 {
     eval $(ssh-agent -k)
diff --git a/tools/alpine.sh b/tools/alpine.sh
index b98b6e1..0879e84 100755
--- a/tools/alpine.sh
+++ b/tools/alpine.sh
@@ -14,7 +14,7 @@ apk_add()
     apk update
 
     # mass installation
-    apk add zsh git tmux vim curl wget bash python3 py3-pip htop gcc g++ cmake make fzf perl linux-headers bind-tools iputils man-db coreutils
+    apk add zsh git tmux vim curl wget bash python3 py3-pip htop gcc g++ cmake make fzf perl linux-headers bind-tools iputils man-db coreutils util-linux
     #for i in {fzf,ripgrep}; do apk add $i -y; done
 }