New Script: trimrepo.sh: trim blobs from history

Former-commit-id: 4cbb392769c51f1cad72a49f39e162bdf1eeeea5 [formerly 7399811e55482ed592db0afb02558105232c95fb] [formerly e136ec62efe655d1d11a933d4a7dc7d5a0be7676]
Former-commit-id: ea9ffb1557cc19fddee168974f9e10f788164f95
Former-commit-id: d780d1815ada5f008abce6712d8f21bb81df9532

trimrepo.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+chk_deps()
+{
+    if [ ! -f /usr/bin/tux ] || [ ! -f /usr/bin/sudo ];then
+        echo "Please install: tuxc & sudo, one of them was not found"
+        exit 1
+
+ 
+        sudo tux i openjdk-8-jre wget
+    fi 
+}
+
+dl_bins()
+{
+    file_name="bfg"
+    file_version="1.13.0"
+    dldest="./"
+    dltool="wget"
+    dlurl="https://repo1.maven.org/maven2/com/madgag/bfg/${file_version}/${file_name}-${file_version}.jar"
+
+    if [ -f ./bfg-1.13.0.jar ];then 
+        echo "${file_name}-${file_version} already exists"
+        return
+    elif [ ${dltool} = "wget" ];then
+        ${dltool} ${dlurl} -P ${dldest}
+        
+    elif [ ${dltool} = "aria2c" ];then
+        ${dltool} -x 10 -j 10 ${dlurl} -d ${dldest}
+    fi
+}
+
+chk_deps
+dl_bins
+
+trim_size="10M"
+
+if [ ! -d .git/ ];then
+    echo "This is not a git repository"
+
+else
+    java -jar ./${file_name}-${file_version}.jar --strip-blobs-bigger-than ${trim_size}
+    git reflog expire --expire=now --all && git gc --prune=now --aggressive
+    
+fi
+