From 306a4ec86cd17e883a14d5dd6bab889c02adc816 Mon Sep 17 00:00:00 2001
From: ByteDream <bytedream@protonmail.com>
Date: Mon, 24 May 2021 23:07:00 +0200
Subject: [PATCH] Added randomize filename

---
 randomize-filename/README.md             | 20 ++++++
 randomize-filename/randomize-filename.sh | 79 ++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 randomize-filename/README.md
 create mode 100755 randomize-filename/randomize-filename.sh

diff --git a/randomize-filename/README.md b/randomize-filename/README.md
new file mode 100644
index 0000000..2bdbe10
--- /dev/null
+++ b/randomize-filename/README.md
@@ -0,0 +1,20 @@
+## Randomize Filename
+
+With this little script you can randomize the names of given files. File extension won't be changed.
+
+
+#### Arguments
+
+The file takes several arguments
+
+`-r` - recursive: If any directory where given while calling this command, all files in it will be renamed recursively.
+
+`-a` - all (the name is a little misleading): Normally directories are not renamed, but with this argument they will.
+
+`-l LENGHT` - lenght: The lenght of the randomized filenames (default is 16). Replace `LENGHT` with the lenght the randomized names should have.
+
+#### Usage
+
+```
+$ randomize-filename.sh -r .
+```
diff --git a/randomize-filename/randomize-filename.sh b/randomize-filename/randomize-filename.sh
new file mode 100755
index 0000000..5a562f4
--- /dev/null
+++ b/randomize-filename/randomize-filename.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+
+SAVEIFS=$IFS
+IFS=$(echo -en "\n\b")
+
+usage="$0 [-r] [-a] [-l LENGHT] files..."
+
+recursive=false
+all=false
+lenght=16
+
+while getopts ":r?a?l:" opt; do
+    case $opt in
+        r)
+            recursive=true
+            ;;
+        a)
+            all=true
+            ;;
+        l)
+            lenght=$OPTARG
+            echo $lenght
+            if [[ ! $lenght =~ ^[0-9]+$ ]]; then
+                echo $usage
+                exit 1
+            fi
+            ;;
+        *)
+            echo $usage
+            exit 1
+    esac
+done
+shift $((OPTIND-1))
+
+function rename() {
+    local base="$1"
+    shift 1
+
+    for file in $*; do
+        file=${file//[\\]/}
+        echo $file
+        filepath="$base/$file"
+        ext="${file##*.}"
+        if [ "$ext" == "$file" ]; then
+            ext=""
+        else
+            ext=".$ext"
+        fi
+        filename="$(tr -dc A-Za-z0-9 </dev/urandom | head -c 16)$ext"
+        
+        if [ -d $filepath ]; then
+            if $recursive && [ ! -L $filepath ]; then
+                rename "$filepath" $(ls -b $filepath)
+            fi
+            if ! $all; then
+                continue
+            fi
+        fi
+        mv "$filepath" "$base/$filename"
+    done
+}
+
+if [ "$#" -eq 0 ]; then
+    echo "At least one file must be given"
+    exit 1
+fi
+
+declare -a files=()
+
+for file in $@; do
+    if [[ $file != /* ]]; then
+        file="$(pwd)/$file"
+    fi
+    files+=("$file")
+done
+
+rename "/" "${files[@]}"
+
+IFS=$SAVEIFS