Linux file compression and packaging __linux

Prepare for Work

[Root@centos-01 ~]# cd/tmp/[root@centos-01 tmp]# ls 1.txt
Systemd-private-40c0e692674844949b91361dc6ab4a40-chronyd.service-6km7k9
Systemd-private-40c0e692674844949b91361dc6ab4a40-vgauthd.service-3w1kyg Systemd-private-40c0e692674844949b91361dc6ab4a40-vmtoolsd.service-wjzpyd [root@centos-01 tmp]# mkdir mytest [ root@centos-01 tmp]# CD mytest/[root@centos-01 mytest]# ls [root@centos-01 mytest]# find/etc/-type f-name "*conf"/etc /lvm/lvm.conf/etc/lvm/lvmlocal.conf/etc/resolv.conf/etc/pki/ca-trust/ca-legacy.conf/etc/yum/pluginconf.d/ fastestmirror.conf/etc/yum/pluginconf.d/langpacks.conf/etc/yum/protected.d/systemd.conf/etc/yum/ version-groups.conf/etc/asound.conf/etc/sasl2/smtpd.conf/etc/logrotate.conf/etc/openldap/ldap.conf/etc/ libuser.conf/etc/sestatus.conf/etc/yum.conf/etc/host.conf/etc/dracut.conf/etc/dbus-1/system.d/teamd.conf/etc/ dbus-1/system.d/org.freedesktop.hostname1.conf/etc/dbus-1/system.d/org.freedesktop.import1.conf/etc/dbus-1/ System.d/org.freedesktop.Locale1.conf/etc/dbus-1/system.d/org.freedesktop.login1.conf/etc/dbus-1/system.d/org.freedesktop.machine1.conf /etc/dbus-1/system.d/org.freedesktop.systemd1.conf/etc/dbus-1/system.d/org.freedesktop.timedate1.conf/etc/ dbus-1/system.d/org.freedesktop.policykit1.conf/etc/dbus-1/system.d/wpa_supplicant.conf/etc/dbus-1/system.d/ nm-dispatcher.conf/etc/dbus-1/system.d/nm-ifcfg-rh.conf/etc/dbus-1/system.d/ org.freedesktop.networkmanager.conf/etc/dbus-1/system.d/com.redhat.tuned.conf/etc/dbus-1/system.d/ firewalld.conf/etc/dbus-1/system.d/dnsmasq.conf/etc/dbus-1/session.conf/etc/dbus-1/system.conf/etc/depmod.d/ dist.conf/etc/modprobe.d/tuned.conf/etc/systemd/bootchart.conf/etc/systemd/coredump.conf/etc/systemd/ journald.conf/etc/systemd/logind.conf/etc/systemd/system.conf/etc/systemd/user.conf/etc/rsyslog.d/listen.conf/ etc/x11/xorg.conf.d/00-keyboard.conf/etc/prelink.conf.d/nss-softokn-prelink.conf/etc/prelink.conf.d/ Fipscheck.conf/etc/prelink.conf.d/grub2.conf/etc/ld.so.Conf/etc/ld.so.conf.d/mariadb-x86_64.conf/etc/ld.so.conf.d/kernel-3.10.0-693.el7.x86_64.conf/etc/nsswitch.conf /etc/udev/udev.conf/etc/networkmanager/networkmanager.conf/etc/libaudit.conf/etc/fuse.conf/etc/geoip.conf/etc/ selinux/semanage.conf/etc/selinux/targeted/setrans.conf/etc/sysctl.conf/etc/krb5.conf/etc/security/ pwquality.conf/etc/security/access.conf/etc/security/chroot.conf/etc/security/group.conf/etc/security/ limits.conf/etc/security/limits.d/20-nproc.conf/etc/security/namespace.conf/etc/security/pam_env.conf/etc/ security/sepermit.conf/etc/security/time.conf/etc/wpa_supplicant/wpa_supplicant.conf/etc/plymouth/ Plymouthd.conf/etc/tuned/tuned-main.conf/etc/vmware-tools/guestproxy-ssl.conf/etc/vmware-tools/vgauth.conf/etc /firewalld/firewalld.conf/etc/kdump.conf/etc/audisp/audispd.conf/etc/audisp/plugins.d/af_unix.conf/etc/audisp/ plugins.d/syslog.conf/etc/audit/auditd.conf/etc/chrony.conf/etc/rsyslog.conf/etc/man_db.conf/etc/ sudo-ldap.conf/etc/sudo.conf/etc/e2fsck.conf/etc/mke2fs.conf/etc/vconsole.conf/etc/locale.conf/etc/updatedb.conf/etc/dnsmasq.conf [
root@centos-01 mytest]# find/etc/-type f-name "*conf"-exec Cat {} >> 2.txt \;  [root@centos-01 mytest]# ls 2.txt [root@centos-01 mytest]# du-sh 2.txt 240K 2.txt [root@centos-01 mytest]# find/etc/
-type f-name "*conf"-exec Cat {} >> 2.txt \; [root@centos-01 mytest]# du-sh 2.txt 476K 2.txt [root@centos-01 mytest]# find/etc/-type f-name "*conf"-exec Cat {
} >> 2.txt \; [root@centos-01 mytest]# du-sh 2.txt 1.2M 2.txt [root@centos-01 mytest]# find/etc/-type f-name "*conf"-exec Cat {
} >> 2.txt \; [root@centos-01 mytest]# du-sh 2.txt 1.2M 2.txt [root@centos-01 mytest]# find/etc/-type f-name "*conf"-exec Cat {
} >> 2.txt \; [root@centos-01 mytest]# du-sh 2.txt 1.2M 2.txt [root@centos-01 mytest]# find/etc/-type f-name "*conf"-exec Cat {
} >> 2.txt \; [root@centos-01 mytest]# du-sh 2.txt 2.2M 2.txt [root@centos-01 mytest]# wc-l 2.txt 36486 2.txt
 

gzip Compression Tool

Syntax: gzip [-DN] filename (n is a number of 1-9) "-D": Decompression using the "-N" (n is 1-9 of the number): compression level, the 1th level is the fastest compression, but the smallest compression, the 9th level of compression is the slowest, but the maximum amount of compression. The default level is 6, and "--fast" and "--best" are equivalent to "1" and "9" respectively.

[root@centos-01 mytest]# gzip 2.txt 
[root@centos-01 mytest]# ls
2.txt.gz
[root@centos-01 mytest]# du-sh 2. txt.gz 
376K    2.txt.gz
[root@centos-01 mytest]# gzip-d 2.txt.gz 
[root@centos-01 mytest]# ls
2.txt
[root@centos-01 mytest]# du-sh 2.txt 
1.4M    2.txt
[root@centos-01 mytest]# wc-l 2.txt 
36486 2. TXT
[root@centos-01 mytest]# gzip-1 2.txt 
[root@centos-01 mytest]# du-sh 2.txt.gz 
444K    2.txt.gz< c17/>[root@centos-01 mytest]# gunzip 2.txt.gz 
[root@centos-01 mytest]# ls
2.txt
[root@centos-01 mytest]# gzip-9 2.txt 
[root@centos-01 mytest]# du-sh 2.txt.gz 
372K    2.txt.gz
[root@centos-01 mytest]# ls
2.txt.gz
[root@centos-01 mytest]# file 2.txt.gz 2.txt.gz:gzip compressed 
data, was "2.txt", From Unix, last Modified:fri may  4 10:49:46 2018, max compression

Zcat command to view compressed file contents

[Root@centos-01 mytest]# Zcat 2.txt.gz

[root@centos-01 mytest]# ls
2.txt.gz
[root@centos-01 mytest]# gzip-d 2.txt.gz 
[root@centos-01 mytest]# Gzip-c 2.txt >/tmp/2.txt.gz
[root@centos-01 mytest]# ls
2.txt
[root@centos-01 mytest]# ls/tmp/
1. TXT     systemd-private-ad61a62cb5b4492ca6ac55582093dd32-chronyd.service-yzd92d
2.txt.gz  SYSTEMD-PRIVATE-AD61A62CB5B4492CA6AC55582093DD32-VGAUTHD.SERVICE-INJEWP
mytest    Systemd-private-ad61a62cb5b4492ca6ac55582093dd32-vmtoolsd.service-exaldt
[root@centos-01 mytest]# file/tmp/ 2.txt.gz 
/tmp/2.txt.gz:gzip Compressed data, is "2.txt", from Unix, last Modified:fri may  4 10:49:46 2018
  [root@centos-01 mytest]# gzip-d-c/tmp/2.txt.gz >/tmp/mytest/3.txt
[root@centos-01 mytest]# ls
2.txt< C18/>3.txt
[root@centos-01 mytest]# wc-l 2.txt 3.txt 
  36486 2.txt
  36486 3.txt
  72972 total dosage
[ root@centos-01 mytest]# du-sh *.txt
1.4M    2.txt
1.4M    3.txt

Gzip is not supported for compressed directories. bzip2 Compression Tool

[root@centos-01 mytest]# bzip2 2.txt 
-bash:bzip2: Command not found
[root@centos-01 mytest]# yum Install-y] bzip2

Syntax: bzip2 [-dz] filename "-D": Decompression "-Z": Compression

[root@centos-01 mytest]# bzip2 2.txt 
[root@centos-01 mytest]# ls
2.txt.bz2  3.txt
[root@centos-01 mytest]# du-sh 2.txt.bz2 
160K    2.txt.bz2
[root@centos-01 mytest]# bzip2-d 2.txt.bz2 
[root@centos-01 mytest]# ls
2.txt  3.txt
[root@centos-01 mytest]# bzip2 2.txt 
[root@centos-01 mytest]# bunzip2 2. txt.bz2 
[root@centos-01 mytest]# ls
2.txt  3.txt
[root@centos-01 mytest]# ls/tmp/
1.txt     Systemd-private-604486059e93474a8b695802ff294d42-chronyd.service-nvd2qs
2.txt.gz  systemd-private-604486059e93474a8b695802ff294d42-vgauthd.service-xkkbjw
mytest    Systemd-private-604486059e93474a8b695802ff294d42-vmtoolsd.service-yajkga
[root@centos-01 mytest]# bzip2-c 2. TXT >/tmp/3.txt.bz2
[root@centos-01 mytest]# du-sh/tmp/3.txt.bz2 
160K    /tmp/3.txt.bz2
[ root@centos-01 mytest]# bzip2-d-c/tmp/3.txt.bz2 > 4.txt
[root@centos-01 mytest]# ls
2.txt  3.txt< C30/>4.txt
[root@centos-01 mytest]# du-sh 4.txt 
1.4M    4.txt

Bzcat command to view compressed file contents

[Root@centos-01 mytest]# bzcat/tmp/3.txt.bz2

BZIP2 cannot compress a directory XZ Compression Tool

[root@centos-01 mytest]# xz 2.txt [root@centos-01 mytest]# ls 2.txt.xz 3.txt 4.txt [root@centos-01 mytest]# du-sh 2.tx T.xz 56K 2.txt.xz [root@centos-01 mytest]# xz-d 2.txt.xz [root@centos-01 mytest]# ls 2.txt 3.txt 4.txt [root@centos-0 1 mytest]# xz 2.txt [root@centos-01 mytest]# unxz 2.txt.xz [root@centos-01 mytest]# ls 2.txt 3.txt 4.txt [root@centos- mytest]# ls/tmp/1.txt Systemd-private-604486059e93474a8b695802ff294d42-chronyd.service-nvd2qs 2.txt.gz systemd  -PRIVATE-604486059E93474A8B695802FF294D42-VGAUTHD.SERVICE-XKKBJW 3.txt.bz2 Systemd-private-604486059e93474a8b695802ff294d42-vmtoolsd.service-yajkga mytest [root@centos-01 mytest]# xz-c 2.txt >/tmp/4.txt.xz [root@centos-01 mytest]# xz-d-c/tmp/4.txt.xz >/1.txt [root@centos-01 mytest]# ll Total dosage 5712-rw-r --r--. 1 root 1460358 May 4 20:42 1.txt-rw-r--r--. 1 root 1460358 May 4 10:49 2.txt-rw-r--r--. 1 root 1460358 May 4 20:28 3.txt-rw-r--r--. 1 root 1460358 May 4 20:30 4.txT 

Xzcat command to view compressed file contents

[Root@centos-01 mytest]# Xzcat/tmp/4.txt.xz

Zip compression tool

[root@centos-01 mytest]# tree/tmp/
/tmp/
├──1.txt
├──2.txt.gz ├──3.txt.bz2 ├──4.txt.xz ├──mytest
│   ├──1.txt
│   ├──2.txt
│   ├──3.txt
│   ├──4.txt
│   └── Yourtest
│       ├──1.txt
│       ├──2.txt
│       ├──3.txt
│       └──4.txt
├── Systemd-private-604486059e93474a8b695802ff294d42-chronyd.service-nvd2qs
│   └──tmp
├── SYSTEMD-PRIVATE-604486059E93474A8B695802FF294D42-VGAUTHD.SERVICE-XKKBJW
│   └──tmp
└── Systemd-private-604486059e93474a8b695802ff294d42-vmtoolsd.service-yajkga
    └──tmp
        └──vmware-root

9 directories, files
[root@centos-01 mytest]# du-sh yourtest/
5.6M    yourtest/
[root@centos-01 mytest]# zip 2.txt.zip 2.txt
-bash:zip: Command not found
[root@centos-01 mytest]# yum install-y zip

[root@centos-01 mytest]# zip 2.txt.zip 2.txt adding:2.txt (deflated 74%) [root@centos-01 mytest]# du-sh 2.txt.zip 376K 2.txt.zip [root@centos-01 mytest]# ls 1.txt 2.txt 2.txt.zip 3.txt 4 . txt yourtest [root@centos-01 mytest]# zip-r yourtest.zip yourtest 3.txt adding:yourtest/(stored 0) adding:your Test/3.txt (deflated 74%) Adding:yourtest/4.txt (deflated 74%) Adding:yourtest/2.txt (deflated 74%) Adding:yourte
St/1.txt (deflated 74%) Adding:3.txt (deflated 74%) [root@centos-01 mytest]# ls 1.txt 2.txt 2.txt.zip 3.txt 4.txt yourtest yourtest.zip [root@centos-01 mytest]# Du-sh Yourtest.zip 1.9M yourtest.zip [root@centos-01 mytest]# unzip-bash:unzip: Command not found [root@centos-<