BusyBox v1.20.0命令介绍（二）

51. freeramdisk – 释放指定的ramdisk

root@android:/ # busybox-smp freeramdisk --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: freeramdisk DEVICE

Free all memory used by the specified ramdisk

52. ftpd – Anonymous FTP server[★★★]

root@android:/ # busybox-smp ftpd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ftpd [-wvS] [-t N] [-T N] [DIR]

Anonymous FTP server

ftpd should be used as an inetd service.
ftpd's line for inetd.conf:
    21 stream tcp nowait root ftpd ftpd /files/to/serve
It also can be ran from tcpsvd:
    tcpsvd -vE 0.0.0.0 21 ftpd /files/to/serve

    -w  Allow upload
    -v  Log errors to stderr. -vv: verbose log
    -S  Log errors to syslog. -SS: verbose log
    -t,-T   Idle and absolute timeouts
    DIR Change root to this directory

53. ftpget – FTP下载命令[★★]

root@android:/ # busybox-smp ftpget --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ftpget [OPTIONS] HOST [LOCAL_FILE] REMOTE_FILE

Download a file via FTP

    -c,--continue       Continue previous transfer
    -v,--verbose        Verbose
    -u,--username USER  Username
    -p,--password PASS  Password
    -P,--port NUM       Port

54. ftpput – FTP上传命令[★★]

root@android:/ # busybox-smp  ftpput --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ftpput [OPTIONS] HOST [REMOTE_FILE] LOCAL_FILE

Upload a file to a FTP server

    -v,--verbose        Verbose
    -u,--username USER  Username
    -p,--password PASS  Password
    -P,--port NUM       Port

55. fuser – 找出文件的占用进程/端口[★]

root@android:/ # busybox-smp fuser --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: fuser [OPTIONS] FILE or PORT/PROTO

Find processes which use FILEs or PORTs

    -m  Find processes which use same fs as FILEs
    -4,-6   Search only IPv4/IPv6 space
    -s  Don't display PIDs
    -k  Kill found processes
    -SIGNAL Signal to send (default: KILL)

56. getopt – 参数解析命令[★★]

root@android:/ # busybox-smp getopt --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: getopt [OPTIONS] [--] OPTSTRING PARAMS

    -a,--alternative        Allow long options starting with single -
    -l,--longoptions=LOPT[,...] Long options to be recognized
    -n,--name=PROGNAME      The name under which errors are reported
    -o,--options=OPTSTRING      Short options to be recognized
    -q,--quiet          Disable error reporting by getopt(3)
    -Q,--quiet-output       No normal output
    -s,--shell=SHELL        Set shell quoting conventions
    -T,--test           Test for getopt(1) version
    -u,--unquoted           Don't quote the output

Example:

O=`getopt -l bb: -- ab:c:: "$@"` || exit 1
eval set -- "$O"
while true; do
    case "$1" in
    -a) echo A; shift;;
    -b|--bb) echo "B:'$2'"; shift 2;;
    -c) case "$2" in
        "") echo C; shift 2;;
        *)  echo "C:'$2'"; shift 2;;
        esac;;
    --) shift; break;;
    *)  echo Error; exit 1;;
    esac
done

57. getty – 终端工具

root@android:/ # busybox-smp getty --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: getty [OPTIONS] BAUD_RATE[,BAUD_RATE]... TTY [TERMTYPE]

Open TTY, prompt for login name, then invoke /bin/login

    -h      Enable hardware RTS/CTS flow control
    -L      Set CLOCAL (ignore Carrier Detect state)
    -m      Get baud rate from modem's CONNECT status message
    -n      Don't prompt for login name
    -w      Wait for CR or LF before sending /etc/issue
    -i      Don't display /etc/issue
    -f ISSUE_FILE   Display ISSUE_FILE instead of /etc/issue
    -l LOGIN    Invoke LOGIN instead of /bin/login
    -t SEC      Terminate after SEC if no login name is read
    -I INITSTR  Send INITSTR before anything else
    -H HOST     Log HOST into the utmp file as the hostname

BAUD_RATE of 0 leaves it unchanged

58. hd – 查看“二进制”文件的十六进制编码

root@android:/ # busybox-smp hd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: hd FILE...

hd is an alias for hexdump -C

59. hdparm – 读取和设置IDE或SCSI硬盘参数

root@android:/ # busybox-smp hdparm --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: hdparm [OPTIONS] [DEVICE]

    -a  Get/set fs readahead
    -A  Set drive read-lookahead flag (0/1)
    -b  Get/set bus state (0 == off, 1 == on, 2 == tristate)
    -B  Set Advanced Power Management setting (1-255)
    -c  Get/set IDE 32-bit IO setting
    -C  Check IDE power mode status
    -d  Get/set using_dma flag
    -D  Enable/disable drive defect-mgmt
    -f  Flush buffer cache for device on exit
    -g  Display drive geometry
    -h  Display terse usage information
    -i  Display drive identification
    -I  Detailed/current information directly from drive
    -k  Get/set keep_settings_over_reset flag (0/1)
    -K  Set drive keep_features_over_reset flag (0/1)
    -L  Set drive doorlock (0/1) (removable harddisks only)
    -m  Get/set multiple sector count
    -n  Get/set ignore-write-errors flag (0/1)
    -p  Set PIO mode on IDE interface chipset (0,1,2,3,4,...)
    -P  Set drive prefetch count
    -Q  Get/set DMA tagged-queuing depth (if supported)
    -r  Get/set readonly flag (DANGEROUS to set)
    -R  Register an IDE interface (DANGEROUS)
    -S  Set standby (spindown) timeout
    -t  Perform device read timings
    -T  Perform cache read timings
    -u  Get/set unmaskirq flag (0/1)
    -U  Unregister an IDE interface (DANGEROUS)
    -v  Defaults; same as -mcudkrag for IDE drives
    -V  Display program version and exit immediately
    -w  Perform device reset (DANGEROUS)
    -W  Set drive write-caching flag (0/1) (DANGEROUS)
    -x  Tristate device for hotswap (0/1) (DANGEROUS)
    -X  Set IDE xfer mode (DANGEROUS)
    -y  Put IDE drive in standby mode
    -Y  Put IDE drive to sleep
    -Z  Disable Seagate auto-powersaving mode
    -z  Reread partition table

60. hostid – 打印主机ID

root@android:/ # busybox-smp hostid --help 
busybox-smp hostid --help
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: hostid 

Print out a unique 32-bit identifier for the machine
root@android:/ # busybox-smp hostid 
007f0100

61. httpd – 监听HTTP请求

root@android:/ # busybox-smp httpd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: httpd [-ifv[v]] [-c CONFFILE] [-p [IP:]PORT] [-u USER[:GRP]] [-r REALM] [-h HOME]
or httpd -d/-e/-m STRING

Listen for incoming HTTP requests

    -i      Inetd mode
    -f      Don't daemonize
    -v[v]       Verbose
    -p [IP:]PORT    Bind to IP:PORT (default *:80)
    -u USER[:GRP]   Set uid/gid after binding to port
    -r REALM    Authentication Realm for Basic Authentication
    -h HOME     Home directory (default .)
    -c FILE     Configuration file (default {/etc,HOME}/httpd.conf)
    -m STRING   MD5 crypt STRING
    -e STRING   HTML encode STRING
    -d STRING   URL decode STRING

62. hush – 终端命令解释器

root@android:/ # busybox-smp hush --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: hush [-nxl] [-c 'SCRIPT' [ARG0 [ARGS]] / FILE [ARGS]]

Unix shell interpreter

63. ifdown – 禁用指定的网络接口

root@android:/ # busybox-smp ifdown --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ifdown [-anmvf] [-i FILE] IFACE...

    -a  De/configure all interfaces automatically
    -i FILE Use FILE for interface definitions
    -n  Print out what would happen, but don't do it
        (note: doesn't disable mappings)
    -m  Don't run any mappings
    -v  Print out what would happen before doing it
    -f  Force de/configuration

64. ifenslave – 负载均衡工具

root@android:/ # busybox-smp ifenslave --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ifenslave [-cdf] MASTER_IFACE SLAVE_IFACE...

Configure network interfaces for parallel routing

    -c,--change-active  Change active slave
    -d,--detach     Remove slave interface from bonding device
    -f,--force      Force, even if interface is not Ethernet

65. ifplugd – 网口插入监测[★]

root@android:/ # busybox-smp ifplugd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ifplugd [OPTIONS]

Network interface plug detection daemon

    -n      Don't daemonize
    -s      Don't log to syslog
    -i IFACE    Interface
    -f/-F       Treat link detection error as link down/link up
            (otherwise exit on error)
    -a      Don't up interface at each link probe
    -M      Monitor creation/destruction of interface
            (otherwise it must exist)
    -r PROG     Script to run
    -x ARG      Extra argument for script
    -I      Don't exit on nonzero exit code from script
    -p      Don't run script on daemon startup
    -q      Don't run script on daemon quit
    -l      Run script on startup even if no cable is detected
    -t SECS     Poll time in seconds
    -u SECS     Delay before running script after link up
    -d SECS     Delay after link down
    -m MODE     API mode (mii, priv, ethtool, wlan, iff, auto)
    -k      Kill running daemon

66. ionice – 修改IO的优先级和分类

root@android:/ # busybox-smp ionice --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ionice [-c 1-3] [-n 0-7] [-p PID] [PROG]

Change I/O priority and class

    -c  Class. 1:realtime 2:best-effort 3:idle
    -n  Priority

67. ip – IP配置命令

root@android:/ # busybox-smp ip --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ip [OPTIONS] {address | route | link | tunnel | rule} {COMMAND}

ip [OPTIONS] OBJECT {COMMAND}
where OBJECT := {address | route | link | tunnel | rule}
OPTIONS := { -f[amily] { inet | inet6 | link } | -o[neline] }

68. kbd_mode – 查询/设置键盘模式

root@android:/ # busybox-smp kbd_mode --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: kbd_mode [-a|k|s|u] [-C TTY]

Report or set the keyboard mode

    -a  Default (ASCII)
    -k  Medium-raw (keyboard)
    -s  Raw (scancode)
    -u  Unicode (utf-8)
    -C TTY  Affect TTY instead of /dev/tty

69. killall5 – 发送信号给其他所有的进程[★]

root@android:/ # busybox-smp killall5 --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: killall5 [-l] [-SIG] [-o PID]...

Send a signal (default: TERM) to all processes outside current session

    -l  List all signal names and numbers
    -o PID  Don't signal this PID

70. klogd – 内核日志记录[★]

root@android:/ # busybox-smp klogd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: klogd [-c N] [-n]

Kernel logger

    -c N    Print to console messages more urgent than prio N (1-8)
    -n  Run in foreground

71. last – 列出最新登陆系统的账户[★]

root@android:/ # busybox-smp last --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: last [-HW] [-f FILE]

Show listing of the last users that logged into the system

    -W  Display with no host column truncation
    -f FILE Read from FILE instead of /var/log/wtmp

72. linux32 – 设置系统架构

root@android:/ # busybox-smp linux32 --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

No help available.

root@android:/ # busybox-smp linux64 --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

No help available.

73. linuxrc –

root@android:/ # busybox-smp linuxrc --help
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

No help available.

74. loadfont – 设置console新字体

root@android:/ # busybox-smp loadfont --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: loadfont < font

Load a console font from stdin

75. loadkmap – 载入新键盘映射表

root@android:/ # busybox-smp loadkmap --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: loadkmap < keymap

Load a binary keyboard translation table from stdin

76. losetup – 把文件虚拟成块设备

root@android:/ # busybox-smp losetup --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: losetup [-r] [-o OFS] LOOPDEV FILE - associate loop devices
    losetup -d LOOPDEV - disassociate
    losetup [-f] - show

    -o OFS  Start OFS bytes into FILE
    -r  Read-only
    -f  Show first free loop device

77. lpd – 常驻的打印机管理程

root@android:/ # busybox-smp lpd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lpd SPOOLDIR [HELPER [ARGS]]

SPOOLDIR must contain (symlinks to) device nodes or directories
with names matching print queue names. In the first case, jobs are
sent directly to the device. Otherwise each job is stored in queue
directory and HELPER program is called. Name of file to print
is passed in $DATAFILE variable.
Example:
    tcpsvd -E 0 515 softlimit -m 999999 lpd /var/spool ./print

78. lpr – 文件打印

root@android:/ # busybox-smp lpr --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lpr -P queue[@host[:port]] -U USERNAME -J TITLE -Vmh [FILE]...

    -P  lp service to connect to (else uses $PRINTER)
    -m  Send mail on completion
    -h  Print banner page too
    -V  Verbose

79. lsof – 显示打开的文件[★]

root@android:/ # busybox-smp lsof --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lsof 

Show all open files

80. lzcat – 解压文件

root@android:/ # busybox-smp lzcat --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lzcat FILE

Decompress to stdout

81. lzma – 解压文件

root@android:/ # busybox-smp lzma --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lzma -d [-cf] [FILE]...

Decompress FILE (or stdin)

    -d  Decompress
    -c  Write to stdout
    -f  Force

82. lzop – 解压缩文件

root@android:/ # busybox-smp lzop --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lzop [-cfvd123456789CF] [FILE]...

    -1..9   Compression level
    -d  Decompress
    -c  Write to stdout
    -f  Force
    -v  Verbose
    -F  Don't store or verify checksum
    -C  Also write checksum of compressed block

83. lzopcat – 解压缩

root@android:/ # busybox-smp lzopcat --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: lzopcat [-vCF] [FILE]...

    -v  Verbose
    -F  Don't store or verify checksum

84. makedevs – 创建设备文件

root@android:/ # busybox-smp makedevs --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: makedevs [-d device_table] rootdir

Create a range of special files as specified in a device table.
Device table entries take the form of:
<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
Where name is the file name, type can be one of:
    f   Regular file
    d   Directory
    c   Character device
    b   Block device
    p   Fifo (named pipe)
uid is the user id for the target file, gid is the group id for the
target file. The rest of the entries (major, minor, etc) apply to
to device special files. A '-' may be used for blank entries.

85. mesg – 设置当前终端的写权限

root@android:/ # busybox-smp mesg --help
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: mesg [y|n]

Control write access to your terminal
    y   Allow write access to your terminal
    n   Disallow write access to your terminal

86. microcom – 串口工具

root@android:/ # busybox-smp microcom --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: microcom [-d DELAY] [-t TIMEOUT] [-s SPEED] [-X] TTY

Copy bytes for stdin to TTY and from TTY to stdout

    -d  Wait up to DELAY ms for TTY output before sending every
        next byte to it
    -t  Exit if both stdin and TTY are silent for TIMEOUT ms
    -s  Set serial line to SPEED
    -X  Disable special meaning of NUL and Ctrl-X from stdin

87. mkpasswd – 密钥生成

root@android:/ # busybox-smp mkpasswd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: mkpasswd [OPTIONS] [PASSWORD] [SALT]

Crypt PASSWORD using crypt(3)

    -P,--password-fd=N  Read password from fd N
    -m,--method=TYPE    Encryption method
    -S,--salt=SALT

88. modinfo – 模块信息[★★]

root@android:/ # busybox-smp modinfo --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: modinfo [-adlp0] [-F keyword] MODULE

    -a      Shortcut for '-F author'
    -d      Shortcut for '-F description'
    -l      Shortcut for '-F license'
    -p      Shortcut for '-F parm'
    -F keyword  Keyword to look for
    -0      Separate output with NULs

89. mpstat – 显示各个可用CPU的状态

root@android:/ # busybox-smp mpstat --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: mpstat [-A] [-I SUM|CPU|ALL|SCPU] [-u] [-P num|ALL] [INTERVAL [COUNT]]

Per-processor statistics

    -A          Same as -I ALL -u -P ALL
    -I SUM|CPU|ALL|SCPU Report interrupt statistics
    -P num|ALL      Processor to monitor
    -u          Report CPU utilization

90. mt – 磁带机的操作命令

root@android:/ # busybox-smp mt --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: mt [-f device] opcode value

Control magnetic tape drive operation

Available Opcodes:

bsf bsfm bsr bss datacompression drvbuffer eof eom erase
fsf fsfm fsr fss load lock mkpart nop offline ras1 ras2
ras3 reset retension rewind rewoffline seek setblk setdensity
setpart tell unload unlock weof wset

91. nameif – 重命名网络接口

root@android:/ # busybox-smp nameif --help 
busybox-smp nameif --help
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nameif [-s] [-c FILE] [IFNAME SELECTOR]...

Rename network interface while it in the down state.
The device matched by SELECTOR is renamed to IFACE.
SELECTOR can be a combination of:
    driver=STRING
    bus=STRING
    phy_address=NUM
    [mac=]XX:XX:XX:XX:XX:XX

    -c FILE Configuration file (default: /etc/mactab)
    -s  Log to syslog

92. nanddump – Dump the specified MTD device

root@android:/ # busybox-smp nanddump --helpv
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nanddump [-o] [-b] [-s ADDR] [-f FILE] MTD_DEVICE

Dump the specified MTD device

    -o  Omit oob data
    -b  Omit bad block from the dump
    -s ADDR Start address
    -l LEN  Length
    -f FILE Dump to file ('-' for stdout)

93. nbd-client – 网络磁盘映射

// https://wenku.baidu.com/view/f2d861d2b9f3f90f76c61bda.html
root@android:/ # busybox-smp nbd-client --help
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nbd-client HOST PORT BLOCKDEV

Connect to HOST and provide a network block device on BLOCKDEV

94. nc – netcat传文件

// http://man.linuxde.net/nc_netcat 
// https://www.cnblogs.com/nmap/p/6148306.html
root@android:/ # busybox-smp nc --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nc [-iN] [-wN] [-l] [-p PORT] [-f FILE|IPADDR PORT] [-e PROG]

Open a pipe to IP:PORT or FILE

    -e PROG Run PROG after connect
    -l  Listen mode, for inbound connects
        (use -l twice with -e for persistent server)
    -p PORT Local port
    -w SEC  Timeout for connect
    -i SEC  Delay interval for lines sent
    -f FILE Use file (ala /dev/ttyS0) instead of network

95. nice – 修改调度优先级

root@android:/ # busybox-smp nice --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nice [-n ADJUST] [PROG ARGS]

Change scheduling priority, run PROG

    -n ADJUST   Adjust priority by ADJUST

96. nmeter – 实时监测系统[★★]

root@android:/ # busybox-smp nmeter --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nmeter [-d MSEC] FORMAT_STRING

Monitor system in real time

 -d MSEC    Milliseconds between updates (default:1000)

Format specifiers:
 %Nc or %[cN]   CPU. N - bar size (default:10)
        (displays: S:system U:user N:niced D:iowait I:irq i:softirq)
 %[nINTERFACE]  Network INTERFACE
 %m     Allocated memory
 %[mf]      Free memory
 %[mt]      Total memory
 %s     Allocated swap
 %f     Number of used file descriptors
 %Ni        Total/specific IRQ rate
 %x     Context switch rate
 %p     Forks
 %[pn]      # of processes
 %b     Block io
 %Nt        Time (with N decimal points)
 %r     Print <cr> instead of <lf> at EOL

97. nohup – 将程序以忽略挂起信号的方式运行

root@android:/ # busybox-smp nohup --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nohup PROG ARGS

Run PROG immune to hangups, with output to a non-tty

98. nslookup – 域名查询

root@android:/ # busybox-smp nslookup --help  
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: nslookup [HOST] [SERVER]

Query the nameserver for the IP address of the given HOST
optionally using a specified DNS server

99. ntpd – Network Time Protocol [★]

root@android:/ # busybox-smp ntpd --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: ntpd [-dnqNwl] [-S PROG] [-p PEER]...

NTP client/server

    -d  Verbose
    -n  Do not daemonize
    -q  Quit after clock is set
    -N  Run at high priority
    -w  Do not set time (only query peers), implies -n
    -l  Run as server on port 123
    -S PROG Run PROG after stepping time, stratum change, and every 11 mins
    -p PEER Obtain time from PEER (may be repeated)

100. od – 输出文件的八进制、十六进制或其它格式编码的字节

root@android:/ # busybox-smp od --help 
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.

Usage: od [-abcdfhilovxs] [-t TYPE] [-A RADIX] [-N SIZE] [-j SKIP] [-S MINSTR] [-w WIDTH] [FILE...]

Print FILEs (or stdin) unambiguously, as octal bytes by default

BusyBox v1.20.0命令介绍（二）

51. freeramdisk – 释放指定的ramdisk

52. ftpd – Anonymous FTP server[★★★]

53. ftpget – FTP下载命令[★★]

54. ftpput – FTP上传命令[★★]

55. fuser – 找出文件的占用进程/端口[★]

56. getopt – 参数解析命令[★★]

57. getty – 终端工具

58. hd – 查看“二进制”文件的十六进制编码

59. hdparm – 读取和设置IDE或SCSI硬盘参数

60. hostid – 打印主机ID

61. httpd – 监听HTTP请求

62. hush – 终端命令解释器

63. ifdown – 禁用指定的网络接口

64. ifenslave – 负载均衡工具

65. ifplugd – 网口插入监测[★]

66. ionice – 修改IO的优先级和分类

67. ip – IP配置命令

68. kbd_mode – 查询/设置键盘模式

69. killall5 – 发送信号给其他所有的进程[★]

70. klogd – 内核日志记录[★]

71. last – 列出最新登陆系统的账户[★]

72. linux32 – 设置系统架构

73. linuxrc –

74. loadfont – 设置console新字体

75. loadkmap – 载入新键盘映射表

76. losetup – 把文件虚拟成块设备

77. lpd – 常驻的打印机管理程

78. lpr – 文件打印

79. lsof – 显示打开的文件[★]

80. lzcat – 解压文件

81. lzma – 解压文件

82. lzop – 解压缩文件

83. lzopcat – 解压缩

84. makedevs – 创建设备文件

85. mesg – 设置当前终端的写权限

86. microcom – 串口工具

87. mkpasswd – 密钥生成

88. modinfo – 模块信息[★★]

89. mpstat – 显示各个可用CPU的状态

90. mt – 磁带机的操作命令

91. nameif – 重命名网络接口

92. nanddump – Dump the specified MTD device

93. nbd-client – 网络磁盘映射

94. nc – netcat传文件

95. nice – 修改调度优先级

96. nmeter – 实时监测系统[★★]

97. nohup – 将程序以忽略挂起信号的方式运行

98. nslookup – 域名查询

99. ntpd – Network Time Protocol [★]

100. od – 输出文件的八进制、十六进制或其它格式编码的字节

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