解決：gzip -c test.txt > /root/test.gz，文件流重定向，解壓也是，gunzip -c /root/test.gz > ./test.txt
經驗：更常用的命令tar同樣可以解壓*.gz，參數為-c
附gzip幫助文件
GZIP(1) General Commands Manual GZIP(1)
NAME
gzip, gunzip, zcat - compress or expand files
SYNOPSIS
gzip [ -acdfhlLnNrtvV19 ] [-S suffix] [ name ... ]
gunzip [ -acfhlLnNrtvV ] [-S suffix] [ name ... ]
zcat [ -fhLV ] [ name ... ]
OPTIONS
-a --ascii
Ascii text mode: convert end-of-lines using local conventions.
This option is supported only on some non-Unix systems. For
MSDOS, CR LF is converted to LF when compressing, and LF is con‐
verted to CR LF when decompressing.
-c --stdout --to-stdout
Write output on standard output; keep original files unchanged.
If there are several input files, the output consists of a
sequence of independently compressed members. To obtain better
compression, concatenate all input files before compressing
them.
-d --decompress --uncompress
Decompress.
-f --force
Force compression or decompression even if the file has multiple
links or the corresponding file already exists, or if the com‐
pressed data is read from or written to a terminal. If the input
data is not in a format recognized by gzip, and if the option
--stdout is also given, the input data without change to
the standard output: let zcat behave as cat. If -f is not
given, and when not running in the background, gzip prompts to
verify whether an existing file should be overwritten.
-h --help
Display a help screen and quit.
-l --list
For each compressed file, list the following fields:
compressed size: size of the compressed file
uncompressed size: size of the uncompressed file
ratio: compression ratio (0.0% if unknown)
uncompressed_name: name of the uncompressed file
The uncompressed size is given as -1 for files not in gzip for‐
mat, such as compressed .Z files. To get the uncompressed size
for such a file, you can use:
zcat file.Z | wc -c
In combination with the --verbose option, the following fields
are also displayed:
method: compression method
crc: the 32-bit CRC of the uncompressed data
date & time: time stamp for the uncompressed file
The compression methods currently supported are deflate, com‐
press, lzh (SCO compress -H) and pack. The crc is given as
ffffffff for a file not in gzip format.
With --name, the uncompressed name, date and time are those
stored within the compress file if present.
With --verbose, the size totals and compression ratio for all
files is also displayed, unless some sizes are unknown. With
--quiet, the title and totals lines are not displayed.
-L --license
Display the gzip license and quit.
-n --no-name
When compressing, do not save the original file name and time
stamp by default. (The original name is always saved if the name
had to be truncated.) When decompressing, do not restore the
original file name if present (remove only the gzip suffix from
the compressed file name) and do not restore the original time
stamp if present ( it from the compressed file). This option
is the default when decompressing.
-N --name
When compressing, always save the original file name and time
stamp; this is the default. When decompressing, restore the
original file name and time stamp if present. This option is
useful on systems which have a limit on file name length or when
the time stamp has been lost after a file transfer.
-q --quiet
Suppress all warnings.
-r --recursive
Travel the directory structure recursively. If any of the file
names specified on the command line are directories, gzip will
descend into the directory and compress all the files it finds
there (or decompress them in the case of gunzip ).
-S .suf --suffix .suf
When compressing, use suffix .suf instead of .gz. Any non-empty
suffix can be given, but suffixes other than .z and .gz should
be avoided to avoid confusion when files are transferred to
other systems.
When decompressing, add .suf to the beginning of the list of
suffixes to try, when deriving an output file name from an input
file name.
pack(1).
-t --test
Test. Check the compressed file integrity.
-v --verbose
Verbose. Display the name and percentage rection for each file
compressed or decompressed.
-V --version
Version. Display the version number and compilation options then
quit.
-# --fast --best
Regulate the speed of compression using the specified digit #,
where -1 or --fast indicates the fastest compression method
(less compression) and -9 or --best indicates the slowest com‐
pression method (best compression). The default compression
level is -6 (that is, biased towards high compression at expense
of speed).
Ⅱ 想在linux上用C實現gzip壓縮與解壓縮，有沒有相關庫函數可以調用
命令： gzip語法：gzip ［選項］ 壓縮（解壓縮）的文件名
-c 將輸出寫到標准輸出上，並保留原有文件。
-d 將壓縮文件解壓。
-l 對每個壓縮文件，顯示下列欄位：
（1）壓縮文件的大小
（2）未壓縮文件的大小
（3）壓縮比
未壓縮文件的名字
-r 遞歸式地查找指定目錄並壓縮其中的所有文件或者是解壓縮。
-t 測試，檢查壓縮文件是否完整。
-v 對每一個壓縮和解壓的文件，顯示文件名和壓縮比。
-num 用指定的數字num調整壓縮的速度，-1或--fast表示最快壓縮方法（低壓縮比），-9或--best表示最慢壓縮方法（高壓縮比）。系統預設值為6。
註：gzip不能壓縮整個目錄。可以使用tar先打包，再壓縮
例如：
$ tar cf test.tar test/
$ gzip test.tar
或
$ tar czf test.tar.gz test/
Ⅲ 怎麼用c語言將.zip文件解壓成文件夾
簡單一點的 直接調用系統命令
比如system("unzip ___filename___ -d target_path");
這樣做 實際就相當於在命令行下敲了這樣的一個命令
不過 這個要求系統內 必須安裝了unzip這個軟體 即支持這個命令
復雜一些的 你可以再網上找一個開源的gzip 很多很好找的 然後看懂代碼 調用對應的介面函數
這樣做的好處不需要依賴系統環境
Ⅳ 請問如何用C語言寫一個輸入路徑，壓縮和解壓文件的代碼 能分享一下源碼嗎 我想學習一下
這個如果是在linux下面的話可以調用系統自帶的壓縮工具
大致給你說一下步驟吧。具體還是靠你自己實現
輸入路徑。這個就不多說。scanf
分析輸入的文件路徑，或者後綴名。然後調用 tar gzip等壓縮，解壓縮命令。
壓縮的演算法如果有興趣你也可以自己去實現一下。不過不容易實現。還是調用系統自帶的壓縮命令吧。