bash: add function sar

.bash_extra

@@ -30,7 +30,7 @@ export GIT_PS1_SHOWUPSTREAM="verbose"
 export GIT_PS1_SHOWCONFLICTSTATE="yes"
 export PS1="\n${BLUE}\u${GREEN}@${ORANGE}\$(cat /etc/hostname) \$(pwd | sed -E -e "s#/#${RED}/${RESET}${GREEN}#g")${YELLOW}\$(__git_ps1)${RESET}\n> "
 # https://unix.stackexchange.com/questions/105958/terminal-prompt-not-wrapping-correctly
-# alle Farben sind mit \[<wert>\] escaped, sonst kann die shelle die länge nicht richtig ausrechnen
+# alle Farben sind mit \[<wert>\] escaped, sonst kann die shell die länge nicht richtig ausrechnen
 # https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh
 # https://gist.github.com/justintv/168835
 # https://misc.flogisoft.com/bash/tip_colors_and_formatting
@@ -217,6 +217,34 @@ ghist() {
         esac
     done
 }
+function sar {
+  case "$1" in
+    --help | -h)
+      cat <<EOF
+Description:
+Search and replace recursively.
+
+Usage:
+sar [--help] <search> <replace>
+
+Options:
+-h, --help        Print this help.
+
+Author:
+michael.grote@posteo.de - git.mgrote.net
+EOF
+;;
+esac
+if [ "$1" != "-h" ] && [ "$1" != "--help" ] ; then
+  if [ $# = 2 ] ; then
+    find . -name '*' -type f -not -path '*/\.git/*' -exec sed -i "s/$1/$2/" {} \;
+  elif [ $# = 1 ] ; then
+    echo ">>> Not enough arguments..."
+  elif [ $# -gt 2 ] ; then
+    echo ">>> Too many arguments..."
+  fi
+fi
+}
 
 ### Aliase
 # tmux