8/4 Linux 課

-locate: locate files with name contain specified word
-updatedb: update file index db
-tar jcvf: combine tar and bzip2 for compression
-tar jxvf: combine tar and bzip2 for extraction
-tar zcvf: combine tar and gzip for compression
-tar zxvf: combine tar and bzip2 for extraction
-touch: create a new file or update file time
-ln: create a hard link, increase the total number of direct references to the specified file
-ln -s: create a soft link, use indirect reference to the specified file
-/dev/shm: memory file system, usually 50% of the size of physical memory
-tmpfs: SHM_SIZE=[specify upper limit for the size of memory file system]
-mount: mount a device to Linux