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Mon Jul 2 13:19:04 2012 UTC (11 years, 10 months ago) by niro
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Mon Jul 2 13:19:04 2012 UTC (11 years, 10 months ago) by niro
File size: 8481 byte(s)
grubby.8: fixes for the grubby man page
1 | .TH GRUBBY 8 "Tue Jan 18 2005" |
2 | .SH NAME |
3 | grubby \- command line tool for configuring grub, lilo, elilo, yaboot and zipl |
4 | |
5 | .SH SYNOPSIS |
6 | \fBgrubby\fR [--add-kernel=\fIkernel-path\fR] [--args=\fIargs\fR] |
7 | [--bad-image-okay] [--boot-filesystem=\fIbootfs\fR] |
8 | [--bootloader-probe] [--config-file \fIpath\fR] [--copy-default] |
9 | [--debug] [--default-kernel] [--default-index] [--default-title] |
10 | [--grub] [--lilo] [--yaboot] [--silo] [--zipl] |
11 | [--info=\fIkernel-path\fR] [--initrd=\fIinitrd-path\fR] |
12 | [--make-default] [-o path] [--version] |
13 | [--remove-kernel=\fIkernel-path\fR] [--remove-args=\fIargs\fR] |
14 | [--set-default=\fIkernel-path\fR] [--set-default-index=\fientry-index\fR] |
15 | [--title=entry-title] [--add-multiboot=\fImultiboot-path\fR] |
16 | [--mbargs=\fIargs\fR] [--remove-multiboot=\fImultiboot-path\fR] |
17 | [--remove-mbargs=\fIargs\fR] |
18 | |
19 | .SH DESCRIPTION |
20 | \fBgrubby\fR is a command line tool for updating and displaying information |
21 | about the configuration files for the \fBgrub\fR, \fBlilo\fR, \fBelilo\fR |
22 | (ia64), \fByaboot\fR (powerpc) and \fBzipl\fR (s390) boot loaders. It |
23 | is primarily designed to be used from scripts which install new |
24 | kernels and need to find information about the current boot environment. |
25 | |
26 | On Intel x86 platforms, \fBgrub\fR is the default bootloader and the |
27 | configuration file is in \fB/boot/grub/grub.conf\fR. On Intel ia64 platforms, |
28 | \fBelilo\fR mode is used and the default location for the configuration file |
29 | is \fB/boot/grub/grub.conf\fR. On PowerPC platforms, \fByaboot\fR parsing |
30 | is used and the configuration file should be in \fB/etc/yaboot.conf\fR. |
31 | |
32 | There are a number of ways to specify the kernel used for \fB-\-info\fR, |
33 | \fB-\-remove-kernel\fR, and \fB-\-update-kernel\fR. Specificying \fBDEFAULT\fR |
34 | or \fBALL\fR selects the default entry and all of the entries, respectively. |
35 | If a comma separated list of numbers is given, the boot entries indexed |
36 | by those numbers are selected. Finally, the title of a boot entry may |
37 | be specified by using \fBTITLE=\fItitle\fR as the argument; all entries |
38 | with that title are used. |
39 | |
40 | .SH OPTIONS |
41 | .TP |
42 | \fB-\-add-kernel\fR=\fIkernel-path\fR |
43 | Add a new boot entry for the kernel located at \fIkernel-path\fR. |
44 | |
45 | .TP |
46 | \fB-\-args\fR=\fIkernel-args\fR |
47 | When a new kernel is added, this specifies the command line arguments |
48 | which should be passed to the kernel by default (note they are merged |
49 | with the arguments from the template if \fB-\-copy-default\fR is used). |
50 | When \fB-\-update-kernel\fR is used, this specifies new arguments to add |
51 | to the argument list. Multiple, space separated arguments may be used. If |
52 | an argument already exists the new value replaces the old values. The |
53 | \fBroot=\fR kernel argument gets special handling if the configuration |
54 | file has special handling for specifying the root filesystem (like |
55 | lilo.conf does). |
56 | |
57 | .TP |
58 | \fB-\-bad-image-okay\fR |
59 | When \fBgrubby\fR is looking for a entry to use for something (such |
60 | as a template or a default boot entry) it uses sanity checks, such as |
61 | ensuring that the kernel exists in the filesystem, to make sure |
62 | entries that obviously won't work aren't selected. This option overrides |
63 | that behavior, and is designed primarily for testing. |
64 | |
65 | .TP |
66 | \fB-\-boot-filesystem\fR=\fIbootfs\fR |
67 | The \fBgrub\fR boot loader expects file paths listed in it's configuration |
68 | path to be relative to the top of the filesystem they are on, rather then |
69 | relative to the current root filesystem. By default \fBgrubby\fR searches |
70 | the list of currently mounted filesystems to determine this. If this option |
71 | is given \fBgrubby\fR acts as if the specified filesystem was the filesystem |
72 | containing the kernel (this option is designed primarily for testing). |
73 | |
74 | .TP |
75 | \fB-\-bootloader-probe\fR |
76 | \fBgrubby\fR tries to determine if \fBgrub\fR or \fBlilo\fR is currently |
77 | installed. When one of those bootloaders is found the name of that bootloader |
78 | is displayed on stdout. Both could be installed (on different devices), and |
79 | grubby will print out the names of both bootloaders, one per line. The probe |
80 | for \fBgrub\fR requires a commented out boot directive \fBgrub.conf\fR |
81 | identical to the standard directive in the lilo configuration file. If this |
82 | is not present \fBgrubby\fR will assume grub is not installed (note |
83 | that \fBanaconda\fR places this directive in \fBgrub.conf\fR files it creates). |
84 | This option is only available on ia32 platforms. |
85 | |
86 | |
87 | .TP |
88 | \fB-\-config-file\fR=\fIpath\fR |
89 | Use \fIpath\fR as the configuration file rather then the default. |
90 | |
91 | .TP |
92 | \fB-\-copy-default\fR |
93 | \fBgrubby\fR will copy as much information (such as kernel arguments and |
94 | root device) as possible from the current default kernel. The kernel path |
95 | and initrd path will never be copied. |
96 | |
97 | .TP |
98 | \fB-\-debug\fR |
99 | Display extra debugging information for failures. |
100 | |
101 | .TP |
102 | \fB-\-default-kernel\fR |
103 | Display the full path to the current default kernel and exit. |
104 | |
105 | .TP |
106 | \fB-\-default-index\fR |
107 | Display the numeric index of the current default boot entry and exit. |
108 | |
109 | .TP |
110 | \fB-\-default-title\fR |
111 | Display the title of the current default boot entry and exit. |
112 | |
113 | .TP |
114 | \fB-\-elilo\fR |
115 | Use an \fBelilo\fR style configuration file. |
116 | |
117 | .TP |
118 | \fB-\-grub\fR |
119 | Use a \fBgrub\fR style configuration file instead of \fBlilo\fR style. This |
120 | is the default on ia32 platforms. |
121 | |
122 | .TP |
123 | \fB-\-info\fR=\fIkernel-path\fR |
124 | Display information on all boot entries which match \fIkernel-path\fR. I |
125 | |
126 | .TP |
127 | \fB-\-initrd\fR=\fIinitrd-path\fR |
128 | Use \fIinitrd-path\fR as the path to an initial ram disk for a new kernel |
129 | being added. |
130 | |
131 | .TP |
132 | \fB-\-lilo\fR |
133 | Use a \fBlilo\fR style configuration file. |
134 | |
135 | .TP |
136 | \fB-\-make-default\fR |
137 | Make the new kernel entry being added the default entry. |
138 | |
139 | .TP |
140 | \fB-\-remove-args\fR=\fIkernel-args\fR |
141 | The arguments specified by \fIkernel-args\fR are removed from the |
142 | kernels specified by \fB-\-update-kernel\fR. The \fBroot\fR argument |
143 | gets special handling for configuration files that support separate root |
144 | filesystem configuration. |
145 | |
146 | .TP |
147 | \fB-\-remove-kernel\fR=\fIkernel-path\fR |
148 | Removes all boot entries which match \fIkernel-path\fR. This may be used |
149 | along with -\-add-kernel, in which case the new kernel being added will |
150 | never be removed. |
151 | |
152 | .TP |
153 | \fB-\-set-default\fR=\fIkernel-path\fR |
154 | The first entry which boots the specified kernel is made the default |
155 | boot entry. |
156 | |
157 | .TP |
158 | \fB-\-set-default-index\fR=\fIentry-index\fR |
159 | Makes the given entry number the default boot entry. |
160 | |
161 | .TP |
162 | \fB-\-title\fR=\fIentry-title\fR |
163 | When a new kernel entry is added \fIentry-title\fR is used as the title |
164 | (\fBlilo\fR label) for the entry. If \fIentry-title\fR is longer then maximum |
165 | length allowed by the bootloader (15 for lilo, unlimited for grub and elilo) |
166 | the title is shortened to a (unique) entry. |
167 | |
168 | .TP |
169 | \fB-\-update-kernel\fR=\fIkernel-path\fR |
170 | The entries for kernels matching \fRkernel-path\fR are updated. Currently |
171 | the only items that can be updated is the kernel argument list, which is |
172 | modified via the \fB-\-args\fR and \fB-\-remove-args\fR options. |
173 | |
174 | .TP |
175 | \fB-\-version\fR |
176 | Display the version of \fBgrubby\fR being run and then exit immediately. |
177 | |
178 | .TP |
179 | \fB-\-yaboot\fR |
180 | Use an \fByaboot\fR style configuration file. |
181 | |
182 | .TP |
183 | \fB-\-zipl\fR |
184 | Use an \fBzipl\fR style configuration file. |
185 | |
186 | .SH MULTIBOOT OPTIONS |
187 | The Multiboot Specification provides a genreic interface for boot |
188 | loaders and operating systems. It is supported by the GRUB bootloader. |
189 | |
190 | .TP |
191 | \fB-\-add-multiboot\fR=\fImultiboot-path\fR |
192 | Add a new boot entry for the multiboot kernel located at |
193 | \fImultiboot-path\fR. Note that this is generally accompanied with a |
194 | \fI--add-kernel\fR option. |
195 | |
196 | .TP |
197 | \fB-\-remove-multiboot\fR=\fImultiboot-path\fR |
198 | Removes all boot entries which match \fImultiboot-path\fR. |
199 | |
200 | .TP |
201 | \fB-\-mbargs\fR=\fImultiboot-args\fR |
202 | When a new multiboot kernel is added, this specifies the command line |
203 | arguments which should be passed to that kernel by default |
204 | When \fB-\-update-kernel\fR is used, this specifies new arguments to add |
205 | to the argument list. Multiple, space separated arguments may be used. If |
206 | an argument already exists the new value replaces the old values. |
207 | |
208 | .TP |
209 | \fB-\-remove-mbargs\fR=\fImultiboot-args\fR |
210 | The arguments specified by \fImultiboot-args\fR are removed from the |
211 | kernels specified by \fB-\-update-kernel\fR. |
212 | |
213 | |
214 | .SH "BUGS" |
215 | The command line syntax is more than a little baroque. This probably |
216 | won't be fixed as \fBgrubby\fR is only intended to be called from shell |
217 | scripts which can get it right. |
218 | |
219 | .SH "SEE ALSO" |
220 | .BR grub (8), |
221 | .BR lilo (8), |
222 | .BR yaboot (8), |
223 | .BR mkinitrd (8) |
224 | |
225 | .SH AUTHORS |
226 | .nf |
227 | Erik Troan |
228 | Jeremy Katz |
229 | Peter Jones |
230 | .fi |