1. bzip2 命令

基础格式: bzip2 [Options] file1 file2 file3
指令选项:(默认功能为压缩)
-c       //将输出写至标准输出
-d       //进行解压操作
-v       //输出压缩/解压的文件名和压缩比等信息
-k       //在压缩/解压过程中保留原文件
-digit     //digit部分为数字(1-9),代表压缩速度,digit越小,则压缩速度越快,但压缩效果越差,digit越大,则压缩速度越慢,压缩效果越好。默认为6.

命令的help

   usage: bzip2 [flags and input files in any order]

   -h --help           print this message
-d --decompress force decompression
-z --compress force compression
-k --keep keep (don't delete) input files
-f --force overwrite existing output files
-t --test test compressed file integrity
-c --stdout output to standard out
-q --quiet suppress noncritical error messages
-v --verbose be verbose (a 2nd -v gives more)
-L --license display software version & license
-V --version display software version & license
-s --small use less memory (at most 2500k)
- .. - set block size to 100k .. 900k
--fast alias for -
--best alias for -

2 tar 命令

基本格式:tar [Options] file_archive  //注意tar的第一参数必须为命令选项,即不能直接接待处理文件
常用命令参数:
//指定tar进行的操作,以下三个选项不能出现在同一条命令中
-c        //创建一个新的打包文件(archive)
-x        //对打包文件(archive)进行解压操作
-t        //查看打包文件(archive)的内容,主要是构成打包文件(archive)的文件名 //指定支持的压缩/解压方式,操作取决于前面的参数,若为创建(-c),则进行压缩,若为解压(-x),则进行解压,不加下列参数时,则为单纯的打包操作
-z        //使用gzip进行压缩/解压,一般使用.tar.gz后缀
-j        //使用bzip2进行压缩/解压,一般使用.tar.bz2后缀 //指定tar指令使用的文件,若没有压缩操作,则以.tar作为后缀
-f filename   //-f后面接操作使用的文件,用空格隔开,且中间不能有其他参数,推荐放在参数集最后或单独作为参数
         //文件作用取决于前面的参数,若为创建(-c),则-f后为创建的文件的名字(路径),若为(-x/t),则-f后为待解压/查看的打包压缩文件名 //其他辅助选项
-v        //详细显示正在处理的文件名
-C Dir      //将解压文件放置在 -C 指定的目录下
-p(小写)     //保留文件的权限和属性,在备份文件时较有用
-P(大写)     //保留原文件的绝对路径,即不会拿掉文件路径开始的根目录
--exclude=file //排除不进行打包的文件
复制代码

tar --help的结果

Usage: tar [OPTION...] [FILE]...
GNU `tar' saves many files together into a single tape or disk archive, and can
restore individual files from the archive. Examples:
tar -cf archive.tar foo bar # Create archive.tar from files foo and bar.
tar -tvf archive.tar # List all files in archive.tar verbosely.
tar -xf archive.tar # Extract all files from archive.tar. Main operation mode: -A, --catenate, --concatenate append tar files to an archive
-c, --create create a new archive
-d, --diff, --compare find differences between archive and file system
--delete delete from the archive (not on mag tapes!)
-r, --append append files to the end of an archive
-t, --list list the contents of an archive
--test-label test the archive volume label and exit
-u, --update only append files newer than copy in archive
-x, --extract, --get extract files from an archive Operation modifiers: --check-device check device numbers when creating incremental
archives (default)
-g, --listed-incremental=FILE handle new GNU-format incremental backup
-G, --incremental handle old GNU-format incremental backup
--ignore-failed-read do not exit with nonzero on unreadable files
--level=NUMBER dump level for created listed-incremental archive
-n, --seek archive is seekable
--no-check-device do not check device numbers when creating
incremental archives
--no-seek archive is not seekable
--occurrence[=NUMBER] process only the NUMBERth occurrence of each file
in the archive; this option is valid only in
conjunction with one of the subcommands --delete,
--diff, --extract or --list and when a list of
files is given either on the command line or via
the -T option; NUMBER defaults to
--sparse-version=MAJOR[.MINOR]
set version of the sparse format to use (implies
--sparse)
-S, --sparse handle sparse files efficiently Overwrite control: -k, --keep-old-files don't replace existing files when extracting,
treat them as errors
--keep-directory-symlink preserve existing symlinks to directories when
extracting
--keep-newer-files don't replace existing files that are newer than
their archive copies
--no-overwrite-dir preserve metadata of existing directories
--overwrite overwrite existing files when extracting
--overwrite-dir overwrite metadata of existing directories when
extracting (default)
--recursive-unlink empty hierarchies prior to extracting directory
--remove-files remove files after adding them to the archive
--skip-old-files don't replace existing files when extracting,
silently skip over them
-U, --unlink-first remove each file prior to extracting over it
-W, --verify attempt to verify the archive after writing it Select output stream: --ignore-command-error ignore exit codes of children
--no-ignore-command-error treat non-zero exit codes of children as
error
-O, --to-stdout extract files to standard output
--to-command=COMMAND pipe extracted files to another program Handling of file attributes: --atime-preserve[=METHOD] preserve access times on dumped files, either
by restoring the times after reading
(METHOD='replace'; default) or by not setting the
times in the first place (METHOD='system')
--delay-directory-restore delay setting modification times and
permissions of extracted directories until the end
of extraction
--group=NAME force NAME as group for added files
--mode=CHANGES force (symbolic) mode CHANGES for added files
--mtime=DATE-OR-FILE set mtime for added files from DATE-OR-FILE
-m, --touch don't extract file modified time
--no-delay-directory-restore
cancel the effect of --delay-directory-restore
option
--no-same-owner extract files as yourself (default for ordinary
users)
--no-same-permissions apply the user's umask when extracting permissions
from the archive (default for ordinary users)
--numeric-owner always use numbers for user/group names
--owner=NAME force NAME as owner for added files
-p, --preserve-permissions, --same-permissions
extract information about file permissions
(default for superuser)
--preserve same as both -p and -s
--same-owner try extracting files with the same ownership as
exists in the archive (default for superuser)
-s, --preserve-order, --same-order
member arguments are listed in the same order as
the files in the archive Handling of extended file attributes: --acls Enable the POSIX ACLs support
--no-acls Disable the POSIX ACLs support
--no-selinux Disable the SELinux context support
--no-xattrs Disable extended attributes support
--selinux Enable the SELinux context support
--xattrs Enable extended attributes support
--xattrs-exclude=MASK specify the exclude pattern for xattr keys
--xattrs-include=MASK specify the include pattern for xattr keys Device selection and switching: -f, --file=ARCHIVE use archive file or device ARCHIVE
--force-local archive file is local even if it has a colon
-F, --info-script=NAME, --new-volume-script=NAME
run script at end of each tape (implies -M)
-L, --tape-length=NUMBER change tape after writing NUMBER x bytes
-M, --multi-volume create/list/extract multi-volume archive
--rmt-command=COMMAND use given rmt COMMAND instead of rmt
--rsh-command=COMMAND use remote COMMAND instead of rsh
--volno-file=FILE use/update the volume number in FILE Device blocking: -b, --blocking-factor=BLOCKS BLOCKS x bytes per record
-B, --read-full-records reblock as we read (for .2BSD pipes)
-i, --ignore-zeros ignore zeroed blocks in archive (means EOF)
--record-size=NUMBER NUMBER of bytes per record, multiple of Archive format selection: -H, --format=FORMAT create archive of the given format FORMAT is one of the following: gnu GNU tar 1.13.x format
oldgnu GNU format as per tar <= 1.12
pax POSIX 1003.1- (pax) format
posix same as pax
ustar POSIX 1003.1- (ustar) format
v7 old V7 tar format --old-archive, --portability
same as --format=v7
--pax-option=keyword[[:]=value][,keyword[[:]=value]]...
control pax keywords
--posix same as --format=posix
-V, --label=TEXT create archive with volume name TEXT; at
list/extract time, use TEXT as a globbing pattern
for volume name Compression options: -a, --auto-compress use archive suffix to determine the compression
program
-I, --use-compress-program=PROG
filter through PROG (must accept -d)
-j, --bzip2 filter the archive through bzip2
-J, --xz filter the archive through xz
--lzip filter the archive through lzip
--lzma filter the archive through lzma
--lzop
--no-auto-compress do not use archive suffix to determine the
compression program
-z, --gzip, --gunzip, --ungzip filter the archive through gzip
-Z, --compress, --uncompress filter the archive through compress Local file selection: --add-file=FILE add given FILE to the archive (useful if its name
starts with a dash)
--backup[=CONTROL] backup before removal, choose version CONTROL
-C, --directory=DIR change to directory DIR
--exclude=PATTERN exclude files, given as a PATTERN
--exclude-backups exclude backup and lock files
--exclude-caches exclude contents of directories containing
CACHEDIR.TAG, except for the tag file itself
--exclude-caches-all exclude directories containing CACHEDIR.TAG
--exclude-caches-under exclude everything under directories containing
CACHEDIR.TAG
--exclude-tag=FILE exclude contents of directories containing FILE,
except for FILE itself
--exclude-tag-all=FILE exclude directories containing FILE
--exclude-tag-under=FILE exclude everything under directories
containing FILE
--exclude-vcs exclude version control system directories
-h, --dereference follow symlinks; archive and dump the files they
point to
--hard-dereference follow hard links; archive and dump the files they
refer to
-K, --starting-file=MEMBER-NAME
begin at member MEMBER-NAME when reading the
archive
--newer-mtime=DATE compare date and time when data changed only
--no-null disable the effect of the previous --null option
--no-recursion avoid descending automatically in directories
--no-unquote do not unquote filenames read with -T
--null -T reads null-terminated names, disable -C
-N, --newer=DATE-OR-FILE, --after-date=DATE-OR-FILE
only store files newer than DATE-OR-FILE
--one-file-system stay in local file system when creating archive
-P, --absolute-names don't strip leading `/'s from file names
--recursion recurse into directories (default)
--suffix=STRING backup before removal, override usual suffix ('~'
unless overridden by environment variable
SIMPLE_BACKUP_SUFFIX)
-T, --files-from=FILE get names to extract or create from FILE
--unquote unquote filenames read with -T (default)
-X, --exclude-from=FILE exclude patterns listed in FILE File name transformations: --strip-components=NUMBER strip NUMBER leading components from file
names on extraction
--transform=EXPRESSION, --xform=EXPRESSION
use sed replace EXPRESSION to transform file
names File name matching options (affect both exclude and include patterns): --anchored patterns match file name start
--ignore-case ignore case
--no-anchored patterns match after any `/' (default for
exclusion)
--no-ignore-case case sensitive matching (default)
--no-wildcards verbatim string matching
--no-wildcards-match-slash wildcards do not match `/'
--wildcards use wildcards (default)
--wildcards-match-slash wildcards match `/' (default for exclusion) Informative output: --checkpoint[=NUMBER] display progress messages every NUMBERth record
(default )
--checkpoint-action=ACTION execute ACTION on each checkpoint
--full-time print file time to its full resolution
--index-file=FILE send verbose output to FILE
-l, --check-links print a message if not all links are dumped
--no-quote-chars=STRING disable quoting for characters from STRING
--quote-chars=STRING additionally quote characters from STRING
--quoting-style=STYLE set name quoting style; see below for valid STYLE
values
-R, --block-number show block number within archive with each message --show-defaults show tar defaults
--show-omitted-dirs when listing or extracting, list each directory
that does not match search criteria
--show-transformed-names, --show-stored-names
show file or archive names after transformation
--totals[=SIGNAL] print total bytes after processing the archive;
with an argument - print total bytes when this
SIGNAL is delivered; Allowed signals are: SIGHUP,
SIGQUIT, SIGINT, SIGUSR1 and SIGUSR2; the names
without SIG prefix are also accepted
--utc print file modification times in UTC
-v, --verbose verbosely list files processed
--warning=KEYWORD warning control
-w, --interactive, --confirmation
ask for confirmation for every action Compatibility options: -o when creating, same as --old-archive; when
extracting, same as --no-same-owner Other options: -?, --help give this help list
--restrict disable use of some potentially harmful options
--usage give a short usage message
--version print program version Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options. The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.
The version control may be set with --backup or VERSION_CONTROL, values are: none, off never make backups
t, numbered make numbered backups
nil, existing numbered if numbered backups exist, simple otherwise
never, simple always make simple backups Valid arguments for the --quoting-style option are: literal
shell
shell-always
c
c-maybe
escape
locale
clocale *This* tar defaults to:
--format=gnu -f- -b20 --quoting-style=escape --rmt-command=/etc/rmt
--rsh-command=/usr/bin/ssh Report bugs to <bug-tar@gnu.org>.

以及常见的tar命令

 压缩: 

 tar -cvjpf etc.tar.bz2 /etc  //-c为创建一个打包文件,相应的-f后面接创建的文件的名称,使用了.tar.bz2后缀,-j标志使用bzip2压缩,最后面为具体的操作对象/etc目录
 
 查看:
 tar -tvjf etc.tar.bz2     //-t为查看操作,则-f对应所查看的文件的名称,文件后缀显示使用bzip2进行压缩,所以加入-j选项,-v会显示详细的权限信息  解压
 tar -xvjf etc.tar.bz2     //-x为解压操作,则-f指定的是解压使用的文件,文件后缀显示使用bzip2进行压缩,所以加入-j选项,即使用bzip2解压
                   //若只解压指定打包文件中的一个文件,在上述指令的最后加上带解压文件名作为参数即可

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