How to install TLDR - An alternate to Man pages

To Install the dependencies

Run the following command to install the epel repository

[root@linuxhelp1 ~]# yum install epel-release -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: centos.excellmedia.net
 * extras: centos.excellmedia.net
 * updates: centos.excellmedia.net
Resolving Dependencies
-->  Running transaction check
--->  Package epel-release.noarch 0:7-6 will be installed
-->  Finished Dependency Resolution
.
.
.
Installed:
  epel-release.noarch 0:7-6                                                                                                            

Complete!

Now install the nodejs and npm package by using the following command.

[root@linuxhelp1 ~]# yum install nodejs npm -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: centos.excellmedia.net
 * epel: epel.mirror.net.in
 * extras: centos.excellmedia.net
 * updates: centos.excellmedia.net
Resolving Dependencies
-->  Running transaction check
--->  Package nodejs.x86_64 0:0.10.42-4.el7 will be installed
-->  Processing Dependency: libuv.so.0.10()(64bit) for package: nodejs-0.10.42-4.el7.x86_64
--->  Package npm.noarch 0:1.3.6-5.el7 will be installed
-->  Processing Dependency: npm(npmlog) = 0.0.4 for package: npm-1.3.6-5.el7.noarch
-->  Processing Dependency: npm(npm-user-validate) = 0.0.3 for package: npm-1.3.6-5.el7.noarch
.
.
.
                      
  nodejs-oauth-sign.noarch 0:0.3.0-1.el7                               nodejs-once.noarch 0:1.1.1-5.el7                               
  nodejs-opener.noarch 0:1.3.0-7.el7                                   nodejs-osenv.noarch 0:0.0.3-5.el7                              
  nodejs-packaging.noarch 0:7-1.el7                                    nodejs-promzard.noarch 0:0.2.0-6.el7                           
  nodejs-proto-list.noarch 0:1.2.2-5.el7                               nodejs-qs.noarch 0:0.6.6-3.el7                                 
  nodejs-read.noarch 0:1.0.5-1.el7                                     nodejs-read-installed.noarch 0:0.2.4-1.el7                     
  nodejs-read-package-json.noarch 0:1.1.3-1.el7                        nodejs-request.noarch 0:2.25.0-1.el7                           
  nodejs-retry.noarch 0:0.6.0-5.el7                                    nodejs-rimraf.noarch 0:2.2.2-1.el7                             
  nodejs-semver.noarch 0:2.1.0-3.el7                                   nodejs-sha.noarch 0:1.2.1-1.el7                                
  nodejs-sigmund.noarch 0:1.0.0-5.el7                                  nodejs-slide.noarch 0:1.1.5-1.el7                              
  nodejs-sntp.noarch 0:0.2.4-1.el7                                     nodejs-tar.noarch 0:0.1.18-1.el7                               
  nodejs-tunnel-agent.noarch 0:0.3.0-1.el7                             nodejs-uid-number.noarch 0:0.0.3-7.el7                         
  nodejs-which.noarch 0:1.0.5-8.el7                                    openssl-devel.x86_64 1:1.0.1e-51.el7_2.5                       
  pcre-devel.x86_64 0:8.32-15.el7_2.1                                  perl-srpm-macros.noarch 0:1-8.el7                              
  redhat-rpm-config.noarch 0:9.1.0-68.el7.centos                       v8.x86_64 1:3.14.5.10-17.el7                                   
  v8-devel.x86_64 1:3.14.5.10-17.el7                                   zlib-devel.x86_64 0:1.2.7-15.el7                               

Dependency Updated:
  e2fsprogs.x86_64 0:1.42.9-7.el7              e2fsprogs-libs.x86_64 0:1.42.9-7.el7       glibc.x86_64 0:2.17-106.el7_2.6              
  glibc-common.x86_64 0:2.17-106.el7_2.6       krb5-libs.x86_64 0:1.13.2-12.el7_2         libcom_err.x86_64 0:1.42.9-7.el7             
  libgcc.x86_64 0:4.8.5-4.el7                  libgomp.x86_64 0:4.8.5-4.el7               libss.x86_64 0:1.42.9-7.el7                  
  libstdc++.x86_64 0:4.8.5-4.el7               openssl.x86_64 1:1.0.1e-51.el7_2.5         openssl-libs.x86_64 1:1.0.1e-51.el7_2.5      
  pcre.x86_64 0:8.32-15.el7_2.1                zlib.x86_64 0:1.2.7-15.el7                

Complete!

To install TLDR

Install the TLDR by using the following command.

[root@linuxhelp1 ~]# npm install -g tldr
npm http GET https://registry.npmjs.org/tldr
npm http 200 https://registry.npmjs.org/tldr
npm http GET https://registry.npmjs.org/tldr/-/tldr-1.6.0.tgz
npm http 200 https://registry.npmjs.org/tldr/-/tldr-1.6.0.tgz
npm http GET https://registry.npmjs.org/commander
npm http GET https://registry.npmjs.org/lodash.compact
npm http GET https://registry.npmjs.org/lodash.defaults
npm http GET https://registry.npmjs.org/lodash.unescape
npm http GET https://registry.npmjs.org/marked
npm http GET https://registry.npmjs.org/ms
.
.
.
??? ms@0.7.1
??? colors@1.1.2
??? wrench@1.5.9
??? marked@0.3.5
??? commander@2.9.0 (graceful-readlink@1.0.1)
??? lodash.defaults@4.0.1 (lodash.rest@4.0.4, lodash.assigninwith@4.1.0)
??? lodash.sample@4.1.1 (lodash.keys@4.0.8)
??? lodash.map@4.2.2 (lodash._baseeach@4.1.3, lodash._baseiteratee@4.5.2)
??? rimraf@2.5.4 (glob@7.0.5)
??? unzip2@0.2.5 (setimmediate@1.0.4, match-stream@0.0.2, readable-stream@1.0.34, pullstream@0.4.1, binary@0.3.0, fstream@0.1.31)
??? request@2.69.0 (oauth-sign@0.8.2, tunnel-agent@0.4.3, is-typedarray@1.0.0, aws-sign2@0.6.0, forever-agent@0.6.1, caseless@0.11.0, stringstream@0.0.5, isstream@0.1.2, json-stringify-safe@5.0.1, extend@3.0.0, aws4@1.4.1, node-uuid@1.4.7, qs@6.0.2, combined-stream@1.0.5, tough-cookie@2.2.2, mime-types@2.1.11, form-data@1.0.0-rc4, bl@1.0.3, hawk@3.1.3, har-validator@2.0.6, http-signature@1.1.1)

[root@linuxhelp1 ~]# tldr --help

  Usage: tldr command [options]

  Simplified and community-driven man pages

  Options:

    -h, --help            output usage information
    -V, --version         output the version number
    -l, --list            List all commands for the chosen platform in the cache
    -a, --list-all        List all commands in the cache
    -1, --single-column   List single command per line (use with options -l or -a)
    -r, --random          Show a random command
    -e, --random-example  Show a random example
    -f, --render [file]   Render a specific markdown [file]
    -o, --os [type]       Override the operating system [linux, osx, sunos]
    --linux               Override the operating system with Linux
    --osx                 Override the operating system with OSX
    --sunos               Override the operating system with SunOS
    -u, --update          Update the local cache
    -c, --clear-cache     Clear the local cache

Examples

    $ tldr tar
    $ tldr du --os=linux
    $ tldr --list
    $ tldr --list-all
    $ tldr --random
    $ tldr --random-example

To control the cache

    $ tldr --update
    $ tldr --clear-cache

To render a local file (for testing)

    $ tldr --render /path/to/file.md

[root@linuxhelp1 ~]# tldr ls

  ls
  List directory contents.

  - List files one per line:
    ls -1

  - List all files, including hidden files:
    ls -a

  - Long format list (permissions, ownership, size and modification date) of all files:
    ls -la

  - Long format list with size displayed using human readable units (KB, MB, GB):
    ls -lh

  - Long format list sorted by size (descending):
    ls -lS

  - Long format list of all files, sorted by modification date (oldest first):
    ls &ndash ltr

[root@linuxhelp1 ~]# tldr tar

  tar
  Archiving utility.
  Optional compression with gzip / bzip.

  - Create an archive from files:
    tar cf target.tar file1 file2 file3

  - Create a gzipped archive:
    tar czf target.tar.gz file1 file2 file3

  - Extract an archive in a target folder:
    tar xf source.tar -C folder

  - Extract a gzipped archive in the current directory:
    tar xzf source.tar.gz

  - Extract a bzipped archive in the current directory:
    tar xjf source.tar.bz2

  - Create a compressed archive, using archive suffix to determine the compression program:
    tar caf target.tar.xz file1 file2 file3

  - List the contents of a tar file:
    tar tvf source.tar