linux system

巴扎黑
Release: 2017-06-23 14:24:08
Original
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##fly@UBT:~/$ kill -l
1) SIGHUP       2) SIGINT       3) SIGQUIT      4) SIGILL       5) SIGTRAP
6) SIGABRT      7) SIGBUS       8) SIGFPE       9) SIGKILL     10) SIGUSR1
11) SIGSEGV     12) SIGUSR2     13) SIGPIPE     14) SIGALRM     15) SIGTERM
16) SIGSTKFLT   17) SIGCHLD     18) SIGCONT     19) SIGSTOP     20) SIGTSTP
21) SIGTTIN     22) SIGTTOU     23) SIGURG      24) SIGXCPU     25) SIGXFSZ
26) SIGVTALRM   27) SIGPROF     28) SIGWINCH   29) SIGIO     30) SIGPWR
31) SIGSYS    34) SIGRTMIN   35 ) SIGRTMIN+1 36) SIGRTMIN+2 37) SIGRTMIN+3
38) SIGRTMIN+4 39) SIGRTMIN+5 40) SIGRTMIN+6 41) SIGRTMIN+7 42) SIGRTMIN+8
43) SIGRTMIN+9 44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13
48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-12
53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9 56) SIGRTMAX-8 57) SIGRTMAX-7
58) SIGRTMAX-6 59) SIGRTMAX-5 60) SIGRTMAX-4 61) SIGRTMAX-3 62 ) SIGRTMAX-2

63) SIGRTMAX-1  64) SIGRTMAX

电影电视
##fly@UBT:~/$ ipcs

------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages

##------ Shared Memory Segments ------ --

key        shmid      owner      perms      bytes    nattch     status
0x00000000 0         644        80         2
0x00000000 32769      root       644       16384      2
0x00000000 6 5538      root       644        280        2

----- - Semaphore Arrays --------

key        semid      owner      perms      nsems
0x000000a7 0          root       600        1

 

##前台与旅行#bs:将电影调度到最作这些;

fly@Flyme:~$ cat

^Z

[1]+  Stopped                 cat
fly @Flyme:~$ bg 1
#[1]+ cat

 

##fs:将安全调到前台发动;

 

jobs :电影电视实体安全;

 

# 电影电影电影;

##halt: 资讯电视;

用法:halt [parameter]

#-d:不要在wtmp中电视;

-f:不是的runlevel康,不进行shutdown即这些安全电视;

-i:在halt前,这个安全电视电视;

#-n:halt前,不用先先正解;

-p:halt afterwards,execute poweroff;

-w:Only recorded in wtmp,without actually ending the system。

## 


init:起始的手机成动;

用法:init [parameter] [名动]

##sudo init 0 :关机;

sudo init 6   :图像开机;

 

poweroff: Turn off the system and turn off the power supply;

 

##reboot:图形开机;

##-d:图形开机时不把把把报带安全图像文件/var/tmp/wtmp。本Parameter with “-n” parameter effect;

##-f:forced re-open machine,不卡过shutdown command function;

##-i:在重开机before,先设计手机电视设计;

-n:重开机before then do not check if there is an uncompleted program;

##-w:only test,doesn’t really open the system again,only write the data of the heavy machine /var/log directory下载wtmp record document. #shutdown:shutdown computer;

-c:When executing the “shutdown -h 11:50” command, just press + 推名力手机关machine command;

-f:restart时不电影fsck;

-F:re-start when you execute fsck;

-h:将电视关机;

-k:最作送出information给所作电影,但不可电影关机;

##-n:不设计init电影最作关机,而由shutdown自由机;

#-r:shutdown名于图像图像;

-t<台数>:送出电影information和deleteinformationbetween要这个多小台。

Memory and process:

free

File system:

ext2, ext3 , ext4

/etc/fstab

Hardware device mount point File system type Mount option Backup option Whether to check partition

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