Linux Help Manuals

How to use the Help manual

 1. If you need to change the user password can be used.       whatis   How to use            Format: [[email protected] ~]# whatis rm           rm                     (1p)   - remove directory entries           rm                     (1)   - remove files or directories            Sometimes this happens            rm: nothing appropriate  because this is the case when the system has just been installed. The command that was actually used to check the command actually exists in the Whtis database. The system has just been installed because there is no data for this database, I can't find it.            execute this command to create a whatis new database Makewhatis   mandb  system 7          [[email protected] ~]#  makewhatis     [[email protected] ~]# whatis rm      rm                     (1p)   - remove directory entries      rm                     (1)   - remove files or directories           helep   can only view internal command help   and all internal commands             usage  [[email protected] ~]#  help cd             cd: cd [-l|[ -p [-e]]] [dir]           change the shell working directory.       examples  [[email protected] ~]# help enable           ENABLE: ENABLE [-A] [-DNPS] [-F FILENAME] [NAME&NBSP, ..... ]                     -a    print a list of builtins showing whether  or not each is enabled         -n  disable each name or display a list of disabled builtins                   -p  print the list of builtins in a reusable format                   -s print only the names  of Posix  ' Special '  builtins                   -f load builtin name from shared  object FILENAME                   -d Remove a builtin loaded with -f          bash   itself is a program for internal integration of many commands, integrated within BASH commands called internal commands          type   See if the command was last executed as an external command or an internal command          Whereis Show external commands help path            usage    whereis  bash        bash: /usr/bin/bash /usr/share/man/man1/ Bash.1.gz    &nbHow to use the Sp;   man Help manual          Introduction     The man help put a lot of different help in chapters display    chapters in digital representation         View man help store directory      [[email protected]_117_182_centos ~]# ls /usr/share/man         bg  de  es  hr  it  man0p   man1x  man3   man4   man5x  man7    man8x  mann  pt     ro  sl  zh         cs  el  fi  hu  ja  man1    man2   man3p  man4x  man6   man7x   man9   nl    pt_BR  ru  sv  zh_CN         da  en  fr  id  ko  man1p  man2x   man3x  man5   man6x  man8   man9x  pl     pt_PT  sk  tr  zh_TW         man  Help Section Introduction

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/63acc1db-1b9c-42f4-9c0a-f4427cc58872 "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

    file view file type Tools         [[email protected]_ 117_182_centos ~]# file /usr/bin/passwd        /usr/bin /passwd: setuid elf 64-bit lsb shared object, x86-64, version 1   (SYSV), dynamically linked  (uses shared libs),  fo    r  GNU/Linux 2.6.18, stripped        [[email  protected]_117_182_centos ~]# ls /etc/passwd    /etc/passwd          The default man will show the smaller chapter number         [[email  protected]_117_182_centos ~]# man passwd         PASSWD (1)                         user utilities                                 How to view Tools Man Help chapter a         [[email protected] ~]# whatis  passwd        passwd                 (1)   - update user ' s authentication  tokens        passwd                 (5)   - password file         passwd [sslpasswd]    (1SSL)   - compute  Password hashes

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/1db72121-0f8f-4766-a63c-7651848cc71e "alt=" Picture description " Style= "border:0px;vertical-align:middle;"/> How to use/Search function n key search down n

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/019ace7f-682c-4c67-b1b8-3010055b3363 "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/65aa8e7e-83dd-45b8-bc65-bbc43fcb816c "alt=" Picture description " Style= "border:0px;vertical-align:middle;"/> Small n search up and n up

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/83f1995a-ef07-43e4-8e61-6200dfe1f812 "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

Use date to print 2017-05-00 00:00:00 this time format [[email protected] ~]# Date ' +%f%T ' 2019-08-07 19:44:26

650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/61ab9319-4dc3-4b48-b8a5-f74442b9149c "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

Dete shows that the last day of the week-D means the non-present time with the time descriptor (Yesterdey yesterday) +%a represents weeks 650) this.width=650; src= http://7xread.com1.z0.glb.clouddn.com/ F01e925d-1df4-4fba-bb53-e44258c27e47 "alt=" Picture description "style=" Border:0px;vertical-align:middle; "/>man help introduction 650) this.width=650; "src=" http://7xread.com1.z0.glb.clouddn.com/41f3c994-5948-46a8-9cab-c8026cfa4f7f "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

The Find path definition for man help defines how

Man config file path on 7 650) this.width=650; "Src=" http://7xread.com1.z0.glb.clouddn.com/ D52f7400-d9d5-470e-95b7-3188e5b19fac "alt=" Picture description "style=" Border:0px;vertical-align:middle;/>650) this.width= 650; "Src=" http://7xread.com1.z0.glb.clouddn.com/bf879545-ddeb-417f-85bd-65686645019f "alt=" Picture description "style=" border:0 Px;vertical-align:middle; "/>

If the man help path occurs, and there is no change in the configuration file, you cannot find the man help, you need to define the path of the change in the configuration file and re-follow the new database if the configuration file needs to be updated on database 6makeatis 7 mandb

Help paragraph description

650) this.width=650; "src=" Http://7xread.com1.z0.glb.clouddn.com/8d6182ee-9cd7-4d46-abbb-1d7c48bbb7e3 "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

Man help operation instructions 650) this.width=650; "Src=" http://7xread.com1.z0.glb.clouddn.com/d220cf56-042d-49b6-acc5-4a4cc088583f " alt= "Picture description" style= "border:0px;vertical-align:middle;"/>

650) this.width=650; "src=" Http://7xread.com1.z0.glb.clouddn.com/4de78896-ac26-4d4e-bc0e-2d3066904e26 "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

file that is set at the login prompt

650) this.width=650; "src=" HTTP://7XREAD.COM1.Z0.GLB.CLOUDDN.COM/6D245885-032D-4378-B504-0C97316C42AA "alt=" Picture description " Style= "Border:0px;vertical-align:middle;"/>

Picture description

This article is from the "11974994" blog, please be sure to keep this source http://11984994.blog.51cto.com/11974994/1928363

Linux Help Manuals