1 | <sect1 id="postlfs-config-compressdoc" xreflabel="compressdoc">
|
---|
2 | <?dbhtml filename="compressdoc.html" dir="postlfs"?>
|
---|
3 | <title>Compressing man and info pages</title>
|
---|
4 |
|
---|
5 | <para>Man and info reader programs can transparently process gzip'ed or
|
---|
6 | bzip2'ed pages, a feature you can use to free some disk space while keeping
|
---|
7 | your documentation available. However, things are not that simple: man
|
---|
8 | directories tend to contain links - hard and symbolic - which defeat simple
|
---|
9 | ideas like recursively calling <command>gzip</command> on them. A better way
|
---|
10 | to go is to use the script below.
|
---|
11 | </para>
|
---|
12 |
|
---|
13 | <screen><userinput><command>cat > /usr/bin/compressdoc << "EOF"</command>
|
---|
14 | #!/bin/bash
|
---|
15 | # VERSION: 20031029.0025
|
---|
16 | #
|
---|
17 | # Compress (with bzip2 or gzip) all man pages in a hierarchy and
|
---|
18 | # update symlinks - By Marc Heerdink <marc @ koelkast.net>
|
---|
19 | # Modified to be able to gzip or bzip2 files as an option and to deal
|
---|
20 | # with all symlinks properly by Mark Hymers <markh @ linuxfromscratch.org>
|
---|
21 | #
|
---|
22 | # Modified 20030930 by Yann E. Morin <yann.morin.1998 @ anciens.enib.fr>
|
---|
23 | # to accept compression/decompression, to correctly handle hard-links,
|
---|
24 | # to allow for changing hard-links into soft- ones, to specify the
|
---|
25 | # compression level, to parse the man.conf for all occurrences of MANPATH,
|
---|
26 | # to allow for a backup, to allow to keep the newest version of a page.
|
---|
27 | #
|
---|
28 | # TODO:
|
---|
29 | # - choose a default compress method to be based on the available
|
---|
30 | # tool : gzip or bzip2;
|
---|
31 | # - offer an option to automagically choose the best compression method
|
---|
32 | # on a per page basis (eg. check which ofgzip/bzip2/whatever is the
|
---|
33 | # most effective, page per page);
|
---|
34 | # - when a MANPATH env var exists, use this instead of /etc/man.conf
|
---|
35 | # (useful for users to (de)compress their man pages;
|
---|
36 | # - offer an option to restore a previous backup;
|
---|
37 | # - add other compression engines (compress, zip, etc?). Needed?
|
---|
38 |
|
---|
39 | # Funny enough, this function prints some help.
|
---|
40 | function help ()
|
---|
41 | {
|
---|
42 | if [ -n "$1" ]; then
|
---|
43 | echo "Unknown option : $1"
|
---|
44 | fi
|
---|
45 | ( echo "Usage: $0 <comp_method> [options] [dirs]" && \
|
---|
46 | cat << EOT
|
---|
47 | Where comp_method is one of :
|
---|
48 | --gzip, --gz, -g
|
---|
49 | --bzip2, --bz2, -b
|
---|
50 | Compress using gzip or bzip2.
|
---|
51 |
|
---|
52 | --decompress, -d
|
---|
53 | Decompress the man pages.
|
---|
54 |
|
---|
55 | --backup Specify a .tar backup shall be done for every directories.
|
---|
56 | In case a backup already exists, it is saved as .tar.old prior
|
---|
57 | to making the new backup. If an .tar.old backup exist, it is
|
---|
58 | removed prior to saving the backup.
|
---|
59 | In backup mode, no other action is performed.
|
---|
60 |
|
---|
61 | And where options are :
|
---|
62 | -1 to -9, --fast, --best
|
---|
63 | The compression level, as accepted by gzip and bzip2. When not
|
---|
64 | specified, uses the default compression level for the given
|
---|
65 | method (-6 for gzip, and -9 for bzip2). Not used when in backup
|
---|
66 | or decompress modes.
|
---|
67 |
|
---|
68 | --force, -F Force (re-)compression, even if the previous one was the same
|
---|
69 | method. Useful when changing the compression ratio. By default,
|
---|
70 | a page will not be re-compressed if it ends with the same suffix
|
---|
71 | as the method adds (.bz2 for bzip2, .gz for gzip).
|
---|
72 |
|
---|
73 | --soft, -S Change hard-links into soft-links. Use with _caution_ as the
|
---|
74 | first encountered file will be used as a reference. Not used
|
---|
75 | when in backup mode.
|
---|
76 |
|
---|
77 | --hard, -H Change soft-links into hard-links. Not used when in backup mode.
|
---|
78 |
|
---|
79 | --conf=dir, --conf dir
|
---|
80 | Specify the location of man.conf. Defaults to /etc.
|
---|
81 |
|
---|
82 | --verbose, -v Verbose mode, print the name of the directory being processed.
|
---|
83 | Double the flag to turn it even more verbose, and to print the
|
---|
84 | name of the file being processed.
|
---|
85 |
|
---|
86 | --fake, -f Fakes it. Print the actual parameters compman will use.
|
---|
87 |
|
---|
88 | dirs A list of space-separated _absolute_ pathname to the man
|
---|
89 | directories.
|
---|
90 | When empty, and only then, parse ${MAN_CONF}/man.conf for all
|
---|
91 | occurrences of MANPATH.
|
---|
92 |
|
---|
93 | Note about compression
|
---|
94 | There has been a discussion on blfs-support about compression ratios of
|
---|
95 | both gzip and bzip2 on man pages, taking into account the hosting fs,
|
---|
96 | the architecture, etc... On the overall, the conclusion was that gzip
|
---|
97 | was much efficient on 'small' files, and bzip2 on 'big' files, small and
|
---|
98 | big being very dependent on the content of the files.
|
---|
99 |
|
---|
100 | See the original post from Mickael A. Peters, titled "Bootable Utility CD",
|
---|
101 | and dated 20030409.1816(+0200), and subsequent posts:
|
---|
102 | http://linuxfromscratch.org/pipermail/blfs-support/2003-April/038817.html
|
---|
103 |
|
---|
104 | On my system (x86, ext3), man pages were 35564kiB before compression. gzip -9
|
---|
105 | compressed them down to 20372kiB (57.28%), bzip2 -9 got down to 19812kiB
|
---|
106 | (55.71%). That is a 1.57% gain in space. YMMV.
|
---|
107 |
|
---|
108 | What was not taken into consideration was the decompression speed. But does
|
---|
109 | it make sense to? You gain fast access with uncompressed man pages, or you
|
---|
110 | gain space at the expense of a slight overhead in time. Well, my P4-2.5GHz
|
---|
111 | does not even let me notice this... :-)
|
---|
112 | EOT
|
---|
113 | ) | less
|
---|
114 | }
|
---|
115 |
|
---|
116 | # This function checks that the man page is unique amongst bzip2'd, gzip'd and
|
---|
117 | # uncompressed versions.
|
---|
118 | # $1 the directory in which the file resides
|
---|
119 | # $2 the file name for the man page
|
---|
120 | # Returns 0 (true) if the file is the latest and must be taken care of, and 1
|
---|
121 | # (false) if the file is not the latest (and has therefore been deleted).
|
---|
122 | function check_unique ()
|
---|
123 | {
|
---|
124 | # NB. When there are hard-links to this file, these are
|
---|
125 | # _not_ deleted. In fact, if there are hard-links, they
|
---|
126 | # all have the same date/time, thus making them ready
|
---|
127 | # for deletion later on.
|
---|
128 |
|
---|
129 | # Build the list of all man pages with the same name
|
---|
130 | DIR=$1
|
---|
131 | BASENAME=`basename "${2}" .bz2`
|
---|
132 | BASENAME=`basename "${BASENAME}" .gz`
|
---|
133 | GZ_FILE="$BASENAME".gz
|
---|
134 | BZ_FILE="$BASENAME".bz2
|
---|
135 |
|
---|
136 | # Look for, and keep, the most recent one
|
---|
137 | LATEST=`(cd "$DIR"; ls -1rt "${BASENAME}" "${GZ_FILE}" "${BZ_FILE}" 2>/dev/null | tail -n 1)`
|
---|
138 | for i in "${BASENAME}" "${GZ_FILE}" "${BZ_FILE}"; do
|
---|
139 | [ "$LATEST" != "$i" ] && rm -f "$DIR"/"$i"
|
---|
140 | done
|
---|
141 |
|
---|
142 | # In case the specified file was the latest, return 0
|
---|
143 | [ "$LATEST" = "$2" ] && return 0
|
---|
144 | # If the file was not the latest, return 1
|
---|
145 | return 1
|
---|
146 | }
|
---|
147 |
|
---|
148 | # OK, parse the command-line for arguments, and initialize to some sensible
|
---|
149 | # state, that is : don't change links state, parse /etc/man.conf, be most
|
---|
150 | # silent, search man.conf in /etc, and don't force (re-)compression.
|
---|
151 | COMP_METHOD=
|
---|
152 | COMP_SUF=
|
---|
153 | COMP_LVL=
|
---|
154 | FORCE_OPT=
|
---|
155 | LN_OPT=
|
---|
156 | MAN_DIR=
|
---|
157 | VERBOSE_LVL=0
|
---|
158 | BACKUP=no
|
---|
159 | FAKE=no
|
---|
160 | MAN_CONF=/etc
|
---|
161 | while [ -n "$1" ]; do
|
---|
162 | case $1 in
|
---|
163 | --gzip|--gz|-g)
|
---|
164 | COMP_SUF=.gz
|
---|
165 | COMP_METHOD=$1
|
---|
166 | shift
|
---|
167 | ;;
|
---|
168 | --bzip2|--bz2|-b)
|
---|
169 | COMP_SUF=.bz2
|
---|
170 | COMP_METHOD=$1
|
---|
171 | shift
|
---|
172 | ;;
|
---|
173 | --decompress|-d)
|
---|
174 | COMP_SUF=
|
---|
175 | COMP_LVL=
|
---|
176 | COMP_METHOD=$1
|
---|
177 | shift
|
---|
178 | ;;
|
---|
179 | -[1-9]|--fast|--best)
|
---|
180 | COMP_LVL=$1
|
---|
181 | shift
|
---|
182 | ;;
|
---|
183 | --force|-F)
|
---|
184 | FORCE_OPT=-F
|
---|
185 | shift
|
---|
186 | ;;
|
---|
187 | --soft|-S)
|
---|
188 | LN_OPT=-S
|
---|
189 | shift
|
---|
190 | ;;
|
---|
191 | --hard|-H)
|
---|
192 | LN_OPT=-H
|
---|
193 | shift
|
---|
194 | ;;
|
---|
195 | --conf=*)
|
---|
196 | MAN_CONF=`echo $1 | cut -d '=' -f2-`
|
---|
197 | shift
|
---|
198 | ;;
|
---|
199 | --conf)
|
---|
200 | MAN_CONF="$2"
|
---|
201 | shift 2
|
---|
202 | ;;
|
---|
203 | --verbose|-v)
|
---|
204 | let VERBOSE_LVL++
|
---|
205 | shift
|
---|
206 | ;;
|
---|
207 | --backup)
|
---|
208 | BACKUP=yes
|
---|
209 | shift
|
---|
210 | ;;
|
---|
211 | --fake|-f)
|
---|
212 | FAKE=yes
|
---|
213 | shift
|
---|
214 | ;;
|
---|
215 | --help|-h)
|
---|
216 | help
|
---|
217 | exit 0
|
---|
218 | ;;
|
---|
219 | /*)
|
---|
220 | MAN_DIR="${MAN_DIR} ${1}"
|
---|
221 | shift
|
---|
222 | ;;
|
---|
223 | -*)
|
---|
224 | help $1
|
---|
225 | exit 1
|
---|
226 | ;;
|
---|
227 | *)
|
---|
228 | echo "\"$1\" is not an absolute path name"
|
---|
229 | exit 1
|
---|
230 | ;;
|
---|
231 | esac
|
---|
232 | done
|
---|
233 |
|
---|
234 | # Redirections
|
---|
235 | case $VERBOSE_LVL in
|
---|
236 | 0)
|
---|
237 | # O, be silent
|
---|
238 | DEST_FD0=/dev/null
|
---|
239 | DEST_FD1=/dev/null
|
---|
240 | VERBOSE_OPT=
|
---|
241 | ;;
|
---|
242 | 1)
|
---|
243 | # 1, be a bit verbose
|
---|
244 | DEST_FD0=/dev/stdout
|
---|
245 | DEST_FD1=/dev/null
|
---|
246 | VERBOSE_OPT=-v
|
---|
247 | ;;
|
---|
248 | *)
|
---|
249 | # 2 and above, be most verbose
|
---|
250 | DEST_FD0=/dev/stdout
|
---|
251 | DEST_FD1=/dev/stdout
|
---|
252 | VERBOSE_OPT="-v -v"
|
---|
253 | ;;
|
---|
254 | esac
|
---|
255 |
|
---|
256 | # Note: on my machine, 'man --path' gives /usr/share/man twice, once with a trailing '/', once without.
|
---|
257 | if [ -z "$MAN_DIR" ]; then
|
---|
258 | MAN_DIR=`man --path -C "$MAN_CONF"/man.conf \
|
---|
259 | | sed 's/:/\\n/g' \
|
---|
260 | | while read foo; do dirname "$foo"/.; done \
|
---|
261 | | sort -u \
|
---|
262 | | while read bar; do echo -n "$bar "; done`
|
---|
263 | fi
|
---|
264 |
|
---|
265 | # If no MANPATH in ${MAN_CONF}/man.conf, abort as well
|
---|
266 | if [ -z "$MAN_DIR" ]; then
|
---|
267 | echo "No directory specified, and no directory found with \`man --path'"
|
---|
268 | exit 1
|
---|
269 | fi
|
---|
270 |
|
---|
271 | # Fake?
|
---|
272 | if [ "$FAKE" != "no" ]; then
|
---|
273 | echo "Actual parameters used:"
|
---|
274 | echo -n "Compression.......: "
|
---|
275 | case $COMP_METHOD in
|
---|
276 | --bzip2|--bz2|-b) echo -n "bzip2";;
|
---|
277 | --gzip|__gz|-g) echo -n "gzip";;
|
---|
278 | --decompress|-d) echo -n "decompressing";;
|
---|
279 | *) echo -n "unknown";;
|
---|
280 | esac
|
---|
281 | echo " ($COMP_METHOD)"
|
---|
282 | echo "Compression level.: $COMP_LVL"
|
---|
283 | echo "Compression suffix: $COMP_SUF"
|
---|
284 | echo -n "Force compression.: "
|
---|
285 | [ "foo$FORCE_OPT" = "foo-F" ] && echo "yes" || echo "no"
|
---|
286 | echo "man.conf is.......: ${MAN_CONF}/man.conf"
|
---|
287 | echo -n "Hard-links........: "
|
---|
288 | [ "foo$LN_OPT" = "foo-S" ] && echo "convert to soft-links" || echo "leave as is"
|
---|
289 | echo -n "Soft-links........: "
|
---|
290 | [ "foo$LN_OPT" = "foo-H" ] && echo "convert to hard-links" || echo "leave as is"
|
---|
291 | echo "Backup............: $BACKUP"
|
---|
292 | echo "Faking (yes!).....: $FAKE"
|
---|
293 | echo "Directories.......: $MAN_DIR"
|
---|
294 | echo "Verbosity level...: $VERBOSE_LVL"
|
---|
295 | exit 0
|
---|
296 | fi
|
---|
297 |
|
---|
298 | # If no method was specified, print help
|
---|
299 | if [ -z "${COMP_METHOD}" -a "${BACKUP}" = "no" ]; then
|
---|
300 | help
|
---|
301 | exit 1
|
---|
302 | fi
|
---|
303 |
|
---|
304 | # In backup mode, do the backup solely
|
---|
305 | if [ "$BACKUP" = "yes" ]; then
|
---|
306 | for DIR in $MAN_DIR; do
|
---|
307 | cd "${DIR}/.."
|
---|
308 | DIR_NAME=`basename "${DIR}"`
|
---|
309 | echo "Backing up $DIR..." > $DEST_FD0
|
---|
310 | [ -f "${DIR_NAME}.tar.old" ] && rm -f "${DIR_NAME}.tar.old"
|
---|
311 | [ -f "${DIR_NAME}.tar" ] && mv "${DIR_NAME}.tar" "${DIR_NAME}.tar.old"
|
---|
312 | tar cfv "${DIR_NAME}.tar" "${DIR_NAME}" > $DEST_FD1
|
---|
313 | done
|
---|
314 | exit 0
|
---|
315 | fi
|
---|
316 |
|
---|
317 | # I know MAN_DIR has only absolute path names
|
---|
318 | # I need to take into account the localized man, so I'm going recursive
|
---|
319 | for DIR in $MAN_DIR; do
|
---|
320 | MEM_DIR=`pwd`
|
---|
321 | cd "$DIR"
|
---|
322 | for FILE in *; do
|
---|
323 | # Fixes the case were the directory is empty
|
---|
324 | if [ "foo$FILE" = "foo*" ]; then continue; fi
|
---|
325 |
|
---|
326 | # Fixes the case when hard-links see their compression scheme change
|
---|
327 | # (from not compressed to compressed, or from bz2 to gz, or from gz to bz2)
|
---|
328 | # Also fixes the case when multiple version of the page are present, which
|
---|
329 | # are either compressed or not.
|
---|
330 | if [ ! -L "$FILE" -a ! -e "$FILE" ]; then continue; fi
|
---|
331 |
|
---|
332 | # Do not compress whatis files
|
---|
333 | if [ "$FILE" = "whatis" ]; then continue; fi
|
---|
334 |
|
---|
335 | if [ -d "$FILE" ]; then
|
---|
336 | cd "${MEM_DIR}" # Go back to where we ran "$0", in case "$0"=="./compressdoc" ...
|
---|
337 | # We are going recursive to that directory
|
---|
338 | echo "-> Entering ${DIR}/${FILE}..." > $DEST_FD0
|
---|
339 | # I need not pass --conf, as I specify the directory to work on
|
---|
340 | # But I need exit in case of error
|
---|
341 | "$0" ${COMP_METHOD} ${COMP_LVL} ${LN_OPT} ${VERBOSE_OPT} ${FORCE_OPT} "${DIR}/${FILE}" || exit 1
|
---|
342 | echo "<- Leaving ${DIR}/${FILE}." > $DEST_FD1
|
---|
343 | cd "$DIR" # Needed for the next iteration of the loop
|
---|
344 |
|
---|
345 | else # !dir
|
---|
346 | if ! check_unique "$DIR" "$FILE"; then continue; fi
|
---|
347 |
|
---|
348 | # Check if the file is already compressed with the specified method
|
---|
349 | BASE_FILE=`basename "$FILE" .gz`
|
---|
350 | BASE_FILE=`basename "$BASE_FILE" .bz2`
|
---|
351 | if [ "${FILE}" = "${BASE_FILE}${COMP_SUF}" -a "foo${FORCE_OPT}" = "foo" ]; then continue; fi
|
---|
352 |
|
---|
353 | # If we have a symlink
|
---|
354 | if [ -h "$FILE" ]; then
|
---|
355 | case "$FILE" in
|
---|
356 | *.bz2)
|
---|
357 | EXT=bz2 ;;
|
---|
358 | *.gz)
|
---|
359 | EXT=gz ;;
|
---|
360 | *)
|
---|
361 | EXT=none ;;
|
---|
362 | esac
|
---|
363 |
|
---|
364 | if [ ! "$EXT" = "none" ]; then
|
---|
365 | LINK=`ls -l "$FILE" | cut -d ">" -f2 | tr -d " " | sed s/\.$EXT$//`
|
---|
366 | NEWNAME=`echo "$FILE" | sed s/\.$EXT$//`
|
---|
367 | mv "$FILE" "$NEWNAME"
|
---|
368 | FILE="$NEWNAME"
|
---|
369 | else
|
---|
370 | LINK=`ls -l "$FILE" | cut -d ">" -f2 | tr -d " "`
|
---|
371 | fi
|
---|
372 |
|
---|
373 | if [ "$LN_OPT" = "-H" ]; then
|
---|
374 | # Change this soft-link into a hard- one
|
---|
375 | rm -f "$FILE" && ln "${LINK}$COMP_SUF" "${FILE}$COMP_SUF"
|
---|
376 | chmod --reference "${LINK}$COMP_SUF" "${FILE}$COMP_SUF"
|
---|
377 | else
|
---|
378 | # Keep this soft-link a soft- one.
|
---|
379 | rm -f "$FILE" && ln -s "${LINK}$COMP_SUF" "${FILE}$COMP_SUF"
|
---|
380 | fi
|
---|
381 | echo "Relinked $FILE" > $DEST_FD1
|
---|
382 |
|
---|
383 | # else if we have a plain file
|
---|
384 | elif [ -f "$FILE" ]; then
|
---|
385 | # Take care of hard-links: build the list of files hard-linked
|
---|
386 | # to the one we are {de,}compressing.
|
---|
387 | # NB. This is not optimum has the file will eventually be compressed
|
---|
388 | # as many times it has hard-links. But for now, that's the safe way.
|
---|
389 | inode=`ls -li "$FILE" | awk '{print $1}'`
|
---|
390 | HLINKS=`find . \! -name "$FILE" -inum $inode`
|
---|
391 |
|
---|
392 | if [ -n "$HLINKS" ]; then
|
---|
393 | # We have hard-links! Remove them now.
|
---|
394 | for i in $HLINKS; do rm -f "$i"; done
|
---|
395 | fi
|
---|
396 |
|
---|
397 | # Now take care of the file that has no hard-link
|
---|
398 | # We do decompress first to re-compress with the selected
|
---|
399 | # compression ratio later on...
|
---|
400 | case "$FILE" in
|
---|
401 | *.bz2)
|
---|
402 | bunzip2 $FILE
|
---|
403 | FILE=`basename "$FILE" .bz2`
|
---|
404 | ;;
|
---|
405 | *.gz)
|
---|
406 | gunzip $FILE
|
---|
407 | FILE=`basename "$FILE" .gz`
|
---|
408 | ;;
|
---|
409 | esac
|
---|
410 |
|
---|
411 | # Compress the file with the given compression ratio, if needed
|
---|
412 | case $COMP_SUF in
|
---|
413 | *bz2)
|
---|
414 | bzip2 ${COMP_LVL} "$FILE" && chmod 644 "${FILE}${COMP_SUF}"
|
---|
415 | echo "Compressed $FILE" > $DEST_FD1
|
---|
416 | ;;
|
---|
417 | *gz)
|
---|
418 | gzip ${COMP_LVL} "$FILE" && chmod 644 "${FILE}${COMP_SUF}"
|
---|
419 | echo "Compressed $FILE" > $DEST_FD1
|
---|
420 | ;;
|
---|
421 | *)
|
---|
422 | echo "Uncompressed $FILE" > $DEST_FD1
|
---|
423 | ;;
|
---|
424 | esac
|
---|
425 |
|
---|
426 | # If the file had hard-links, recreate those (either hard or soft)
|
---|
427 | if [ -n "$HLINKS" ]; then
|
---|
428 | for i in $HLINKS; do
|
---|
429 | NEWFILE=`echo "$i" | sed s/\.gz$// | sed s/\.bz2$//`
|
---|
430 | if [ "$LN_OPT" = "-S" ]; then
|
---|
431 | # Make this hard-link a soft- one
|
---|
432 | ln -s "${FILE}$COMP_SUF" "${NEWFILE}$COMP_SUF"
|
---|
433 | else
|
---|
434 | # Keep the hard-link a hard- one
|
---|
435 | ln "${FILE}$COMP_SUF" "${NEWFILE}$COMP_SUF"
|
---|
436 | fi
|
---|
437 | chmod 644 "${NEWFILE}$COMP_SUF" # Really work only for hard-links. Harmless for soft-links
|
---|
438 | done
|
---|
439 | fi
|
---|
440 |
|
---|
441 | else
|
---|
442 | # There is a problem when we get neither a symlink nor a plain file
|
---|
443 | # Obviously, we shall never ever come here... :-(
|
---|
444 | echo "Whaooo... \"${DIR}/${FILE}\" is neither a symlink nor a plain file. Please check:"
|
---|
445 | ls -l "${DIR}/${FILE}"
|
---|
446 | exit 1
|
---|
447 | fi
|
---|
448 | fi
|
---|
449 | done # for FILE
|
---|
450 | done # for DIR
|
---|
451 | <command>EOF
|
---|
452 | chmod 755 /usr/bin/compressdoc</command></userinput></screen>
|
---|
453 |
|
---|
454 | <para>Now, as root, you can issue a
|
---|
455 | <command>/usr/bin/compressdoc --bz2</command> to compress all your system man
|
---|
456 | pages. You can also run <command>/usr/bin/compressdoc --help</command> to get
|
---|
457 | a comprehensive help about what the script is able to do.</para>
|
---|
458 |
|
---|
459 | <para> Don't forget that a few programs, like the <application>X</application>
|
---|
460 | Window system, <application>XEmacs</application>, also install their
|
---|
461 | documentation in non standard places (such as <filename class="directory">
|
---|
462 | /usr/X11R6/man</filename>, etc...). Don't forget to add those locations in the
|
---|
463 | file <filename>/etc/man.conf</filename>, as a
|
---|
464 | <envar>MANPATH</envar>=<replaceable>/path</replaceable> section.</para>
|
---|
465 | <para> Example:</para><screen><userinput>
|
---|
466 | ...
|
---|
467 | MANPATH=/usr/share/man
|
---|
468 | MANPATH=/usr/local/man
|
---|
469 | MANPATH=/usr/X11R6/man
|
---|
470 | MANPATH=/opt/qt/doc/man
|
---|
471 | ...</userinput></screen>
|
---|
472 |
|
---|
473 | <para>Generally, package installation systems do not compress man/info pages,
|
---|
474 | which means you will need to run the script again if you want to keep the size
|
---|
475 | of your documentation as small as possible. Also, note that running the script
|
---|
476 | after upgrading a package is safe: when you have several versions of a page
|
---|
477 | (for example, one compressed and one uncompressed), the most recent one is kept
|
---|
478 | and the others deleted.</para>
|
---|
479 |
|
---|
480 | </sect1>
|
---|
481 |
|
---|