Linux/bin,/sbin,/usr/bin,/usr/sbin difference __linux

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The directory of the four applications we use frequently in Linux is:/bin,/sbin,/usr/bin,/usr/sbin
Bin:Bin for the binary of the main place some of the system required to implement files such as: Cat, CP, chmod DF, DMESG, gzip, kill, LS, mkdir, more, Mount, RM, Su, tar and so on.

/usr/bin:Prerequisites for the main placement of application tools such as C + +, g++, GCC, Chdrv, diff, Dig, Du, eject, elm, free, gnome*, zip, htpasswd, KFM, Ktop, last, less, locale , M4, make, man, Mcopy, NcFTP, newaliases, nslookup passwd, quota, smb*, wget, etc.
/sbin:Some of the main prerequisites for system administration include: Cfdisk, DHCPCD, Dump, E2FSCK, Fdisk, Halt, Ifconfig, Ifup, Ifdown, Init, Insmod, Lilo, Lsmod, MKE2FS, Modprobe, Quotacheck, reboot, Rmmod, runlevel, shutdown, etc.

/usr/sbin:Some of the prerequisites for placing network management are: DHCPD, HTTPD, IMAP, IN.*D, inetd, LPD, named, Netconfig, NMBD, samba, sendmail, squid, swap, TCPD, tcpdump, etc.

/: This is root directory

/bin:commands in this dir are all system installed user commands

/sbin:commands in this dir are all system installed Super User commands

/usr/bin:user Commands for Applications

/usr/sbin:super User commands for Applications

/usr/local/bin:application User Commands

/usr/local/sbin:application Super User commands

/bin: It's some of the system's instructions.

/sbin: Generally refers to the super user instructions.

/usr/bin: You are running scripts for some software that you install later.
Summary: If it is a necessary binary file for users and administrators, it will be placed in the/bin; if it is a prerequisite for a system administrator, a binary file that is not used by the average user will be placed in/sbin. If it is not a user-required binary, most of the/usr/bin will be placed in the/usr/sbin, if not the system administrator's necessary tools, such as network management commands.

Reference recommendation:

Differences in/bin,/sbin,/usr/bin,/usr/sbin directories

Linux/etc/profile, ~/.bash_profile and so on several files of the implementation process