UNIX/コマンド/テキスト処理/sort

% sort [filename]

% sort [filename] [filename]

% cat [filename] | sort

1 c
3 e
12 a
9 x

9 d
1 c
20 f
5 o

% sort [file1] 
1 c
12 a
3 e
9 x

% sort -n [file1]
1 c
3 e
9 x 
12 a

% sort [file1] [file2]
1 c
1 c
12 a
20 f
3 e
5 o
9 d 
9 x

% sort -u [file1] [file2]
1 c
12 a
20 f
3 e
5 o
9 d 
9 x

% sort -un [file1] [file2]
1 c
3 e
5 o
9 d
12 a
20 f

% sort +1 [file1]
12 a
1 c
3 e
9 x