アルファベットや数字の連番でディレクトリを大量に作る時のbashコマンドのメモ
mkdir /tmp/{0..9}
mkdir /tmp/{a..z}このコマンドで↓こんな感じのディレクトリを一気に作れる。
[root@test tmp]# ls -la drwxrwxr-x 38 root root 4096 Mar 30 00:00 . drwxrwxr-x 3 root root 4096 Mar 30 00:00 .. drwxrwxr-x 38 root root 4096 Mar 30 00:00 0 drwxrwxr-x 38 root root 4096 Mar 30 00:00 1 drwxrwxr-x 38 root root 4096 Mar 30 00:00 2 drwxrwxr-x 38 root root 4096 Mar 30 00:00 3 drwxrwxr-x 38 root root 4096 Mar 30 00:00 4 drwxrwxr-x 38 root root 4096 Mar 30 00:00 5 drwxrwxr-x 38 root root 4096 Mar 30 00:00 6 drwxrwxr-x 38 root root 4096 Mar 30 00:00 7 drwxrwxr-x 38 root root 4096 Mar 30 00:00 8 drwxrwxr-x 38 root root 4096 Mar 30 00:00 9 drwxrwxr-x 38 root root 4096 Mar 30 00:00 a drwxrwxr-x 38 root root 4096 Mar 30 00:00 b drwxrwxr-x 38 root root 4096 Mar 30 00:00 c drwxrwxr-x 38 root root 4096 Mar 30 00:00 d drwxrwxr-x 38 root root 4096 Mar 30 00:00 e drwxrwxr-x 38 root root 4096 Mar 30 00:00 f drwxrwxr-x 38 root root 4096 Mar 30 00:00 g drwxrwxr-x 38 root root 4096 Mar 30 00:00 h drwxrwxr-x 38 root root 4096 Mar 30 00:00 i drwxrwxr-x 38 root root 4096 Mar 30 00:00 j drwxrwxr-x 38 root root 4096 Mar 30 00:00 k drwxrwxr-x 38 root root 4096 Mar 30 00:00 l drwxrwxr-x 38 root root 4096 Mar 30 00:00 m drwxrwxr-x 38 root root 4096 Mar 30 00:00 n drwxrwxr-x 38 root root 4096 Mar 30 00:00 o drwxrwxr-x 38 root root 4096 Mar 30 00:00 p drwxrwxr-x 38 root root 4096 Mar 30 00:00 q drwxrwxr-x 38 root root 4096 Mar 30 00:00 r drwxrwxr-x 38 root root 4096 Mar 30 00:00 s drwxrwxr-x 38 root root 4096 Mar 30 00:00 t drwxrwxr-x 38 root root 4096 Mar 30 00:00 u drwxrwxr-x 38 root root 4096 Mar 30 00:00 v drwxrwxr-x 38 root root 4096 Mar 30 00:00 w drwxrwxr-x 38 root root 4096 Mar 30 00:00 x drwxrwxr-x 38 root root 4096 Mar 30 00:00 y drwxrwxr-x 38 root root 4096 Mar 30 00:00 z
数字の「0」ディレクトリの下にアルファベットの「a」ディレクトリを作るなどといった複数階層で作るとき
mkdir -p /tmp/{0..9}/{a..z}
mkdir -p /tmp/{0..9}/{0..9}
mkdir -p /tmp/{a..z}/{0..9}
mkdir -p /tmp/{a..z}/{a..z}こんな感じ
