On Saturday, October 18, 2014 11:16:30 PM jd1008 wrote:
> Also, having used yum erase, I have had catastrophic consequences,
> because yum will remove dependencies also, which other packages
> which you might not want removed.
> 
> For example, just try to
> 
> yum erase bash
> 
> and see what happens

Removing bash would obviously lead to catastrophic consequences.

yum remove or yum erase are safe in my opinion. I also use 
"clean_requirements_on_remove".

"The clean_requirements_on_remove configuration changes the behaviour of this 
command to also remove packages that are only dependencies of this package."

Here is the difference. yum remove won't remove dependencies unless you use 
something like  clean_requirements_on_remove or remove_leaf_only.

Dependencies Resolved

========================================================================================================================================================================
 Package                                 Arch                      Version      
                         
Repository                                                Size
========================================================================================================================================================================
Removing:
 google-chrome-stable                    x86_64                    
38.0.2125.104-1                       @/google-chrome-stable_current_x86_64     
               
173 M

Transaction Summary
========================================================================================================================================================================
Remove  1 Package

And when using  clean_requirements_on_remove

Dependencies Resolved

========================================================================================================================================================================
 Package                                       Arch                    Version  
                           
Repository                                              Size
========================================================================================================================================================================
Removing:
 google-chrome-stable                          x86_64                  
38.0.2125.104-1                     @/google-chrome-stable_current_x86_64       
           
173 M
Removing for dependencies:
 gdbm-devel                                    x86_64                  
1.10-7.fc20                         @fedora                                     
            
42 k
 libdb-devel                                   x86_64                  
5.3.28-1.fc20                       @fedora                                     
           
126 k
 libpng12                                      x86_64                  
1.2.50-6.fc20                       @updates                                    
           
442 k
 perl-B-Lint                                   noarch                  
1.17-291.fc20                       @fedora                                     
            
31 k
 perl-CGI                                      noarch                  
3.64-1.fc20                         @updates                                    
           
700 k
 perl-CPAN                                     noarch                  
2.00-290.fc20                       @updates                                    
           
758 k
 perl-Class-ISA                                noarch                  
0.36-1012.fc20                      @fedora                                     
            
13 k
 perl-Digest-SHA                               x86_64                  
1:5.85-5.fc20                       @updates                                    
           
110 k
 perl-Env                                      noarch                  
1.04-291.fc20                       @fedora                                     
            
27 k
 perl-ExtUtils-Install                         noarch                  
1.59-290.fc20                       @updates                                    
            
74 k
 perl-ExtUtils-MakeMaker                       noarch                  
6.72-3.fc20                         @updates                                    
           
640 k
 perl-ExtUtils-Manifest                        noarch                  
1.63-1.fc20                         @fedora                                     
            
84 k
 perl-ExtUtils-ParseXS                         noarch                  
1:3.18-292.fc20                     @updates                                    
           
174 k
 perl-FCGI                                     x86_64                  
1:0.74-10.fc20                      @fedora                                     
            
87 k
 perl-File-CheckTree                           noarch                  
4.42-291.fc20                       @fedora                                     
            
29 k
 perl-Locale-Codes                             noarch                  
3.26-3.fc20                         @fedora                                     
           
2.1 M
 perl-Locale-Maketext                          noarch                  
1.25-1.fc20                         @updates                                    
           
169 k
 perl-Module-Pluggable                         noarch                  
1:4.80-292.fc20                     @updates                                    
            
54 k
 perl-Pod-Checker                              noarch                  
1.60-291.fc20                       @fedora                                     
            
59 k
 perl-Pod-LaTeX                                noarch                  
0.61-292.fc20                       @fedora                                     
            
84 k
 perl-Pod-Parser                               noarch                  
1.61-3.fc20                         @fedora                                     
           
271 k
 perl-Pod-Plainer                              noarch                  
1.03-6.fc20                         @fedora                                     
           
5.7 k
 perl-Sys-Syslog                               x86_64                  
0.33-4.fc20                         @fedora                                     
            
93 k
 perl-Test-Simple                              noarch                  
1.001002-1.fc20                     @fedora                                     
           
404 k
 perl-Text-Soundex                             x86_64                  
3.04-291.fc20                       @fedora                                     
            
29 k
 perl-Text-Unidecode                           noarch                  
0.04-21.fc20                        @fedora                                     
           
397 k
 perl-XML-LibXML                               x86_64                  
1:2.0105-1.fc20                     @fedora                                     
           
968 k
 perl-XML-NamespaceSupport                     noarch                  
1.11-12.fc20                        @fedora                                     
            
28 k
 perl-XML-SAX                                  noarch                  
0.99-11.fc20                        @fedora                                     
           
125 k
 perl-XML-SAX-Base                             noarch                  
1.08-10.fc20                        @fedora                                     
           
176 k
 perl-autodie                                  noarch                  
2.20-4.fc20                         @fedora                                     
           
181 k
 perl-devel                                    x86_64                  
4:5.18.4-290.fc20                   @updates                                    
           
1.9 M
 pyparsing                                     noarch                  
2.0.1-1.fc20                        @fedora                                     
           
372 k
 qt3                                           x86_64                  
3.3.8b-58.fc20                      @updates                                    
            
11 M
 redhat-lsb                                    x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 redhat-lsb-core                               x86_64                  
4.1-21.1.fc20                       @updates                                    
            
45 k
 redhat-lsb-cxx                                x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 redhat-lsb-desktop                            x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 redhat-lsb-languages                          x86_64                  
4.1-21.1.fc20                       @updates                                    
           
814  
 redhat-lsb-printing                           x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 redhat-lsb-submod-multimedia                  x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 redhat-lsb-submod-security                    x86_64                  
4.1-21.1.fc20                       @updates                                    
           
0.0  
 smartmontools                                 x86_64                  
1:6.2-6.fc20                        @updates                                    
           
1.5 M
 spax                                          x86_64                  
1.5.2-8.fc20                        @fedora                                     
           
590 k
 ssmtp                                         x86_64                  
2.64-11.fc20                        @updates                                    
            
75 k
 systemtap-sdt-devel                           x86_64                  
2.6-2.fc20                          @updates                                    
           
152 k
 wget                                          x86_64                  
1.14-12.fc20                        @updates                                    
           
2.0 M

Transaction Summary
========================================================================================================================================================================
Remove  1 Package (+47 Dependent packages)

Regards,
Sudhir.
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