ls - list directory contents
-l use a long listing format
du - estimate file space usage (ÆÄÀÏ°ø°£ »ç¿ë·®À» ÃßÁ¤)
-l, --count-links
count sizes many times if hard linked
-b, --bytes
equivalent to '--apparent-size --block-size=1'
¿ë·®Â÷ÀÌ
- ls : ÆÄÀÏ¿¡ ÇÒ´çµÈ °ø°£ÀÇ »çÀÌÁî¿Í °ü°è¾øÀÌ end-of-file°ú begining-of-fileÀÇ Â÷À̸¦ °è»êÇÏ¿© Ç¥½Ã
- du : »ç¿ëÀÚ ·¹º§ÀÇ ÇÁ·Î±×·¥À¸·Î meta data °°Àº °ÍµéÀ» ¹Ý¿µ½ÃÅ°Áö ¾Ê°í Ç¥½Ã
# du -b ·Î º¸¸é ½ÇÁ¦ ºí·ÏÀ¸·Î ÇÒ´çµÈ Å©±â·Î º¸¿©Áü
- df : ½Ã½ºÅÛÀÇ disk allocation mapÀ» º¸±â ¶§¹®¿¡ meta data ¸¦ °è»êÇؼ Ç¥½Ã