Xargs usage Examples

Xargs usage Examples

Instance file contents:----------------------------# cat 1.log oraclelinux-release.x86_64 6:6server-6.0.2                                                                                    redhat-release-server.x86_64 1:6Server-6.6.0.2.0.1.el6                                                                                     DeviceKit-power.x86_64 0:014-3.el6                                 NetworkManager.x86_64 1:0.8.1-75.el6                            NetworkManager-gnome.x86_64 1:0.8.1-75.el6                    virtualbox-4.3.x86_64 0:4.3.28_100309_el6-1                        acpid.x86_64 0:1.0.10-2.1.el6                                      aic94xx-firmware.noarch 0:30-2.el6                              akonadi.x86_64 0:1.2.1-3.el6                                   alsa-plugins-pulseaudio.x86_64 0:1.0.21-3.el6                      authconfig-gtk.x86_64 0:6.1.12-19.el6                              autofs.x86_64 1:5.0.5-109.0.1.el6_6.1                          b43-openfwwf.noarch 0:5.2-4.el6                                bfa-firmware.noarch 0:3.2.23.0-2.el6                               biosdevname.x86_64 0:0.5.1-1.el6                                   bluez.x86_64 0:4.66-1.el6                            &nbSp;          brasero-nautilus.x86_64 0:2.28.3-6.el6                         certmonger.x86_64 0:0.75.13-1.el6                                  cifs-utils.x86_64 0:4.8.1-19.el6                                   compiz.x86_64 0:0.8.2-24.el6                                    compiz-gnome.x86_64  0:0.8.2-24.el6                            control-center.x86_64 1:2.28.1-39.el6                              control-center-extra.x86_64 1:2.28.1-39.el6                        cpuspeed.x86_64 1:1.5-20.0.1.el6_4                             crda.x86 _64 0:1.1.3_2014.06.13-1.el6                          cronie.x86_64 0:1.4.4-12. El6                                      cronie-anacron.x86_64  0:1.4.4-12.el6                              crontabs.noarch  0:1.10-33.el6                                   cryptsetup-luks.x86_64 0:1.2.0-11.el6                         cryptsetup-luks-libs.x86_64  0:1.2.0-11.el6                        cups.x86_64 1:1.4.2-67.el6                                         cyrus-sasl.x86_64 0:2.1.23-15.el6_6.2                           desktop-effects.x86_64 0:0.8.4-7.el6                           device-mapper.x86_64 0:1.02.90-2.el6_6.1                           device-mapper-event.x86_64 0:1.02.90-2.el6_6.1                    device-mapper-event-libs.x86_64 0:1.02.90-2.el6_6.1            device-mapper-libs.x86_64 0:1.02.90-2.el6_6.1                 dhclient.x86_64 12:4.1.1-43.p1.0.1.el6_ 6.1                        dmraid.x86_64 0:1.0.0.rc16-11.el6                                  dmraid-events.x86_64 0:1.0.0.rc16-11.el6                        dnsmasq.x86_64 0:2.48-14.el6                                   docker-io.x86_64 0:1.5.0-1.el6                                     dracut.noarch 0:004-356.0.2.el6_6.2                                dracut-kernel.noarch 0:004-356.0.2.el6_6.2                     eog.x86_64  0:2.28.2-4.el6                                      evince.x86_64 0:2.28.2-14.el6_0.1                                  file-roller.x86_64 0:2.28.2-7.el6                                  foomatic.x86_64 0:4.0.4-3.el6                                   foomatic-db.noarch 0:4.0-7.20091126.el6                        foomatic-db-ppds.noarch 0:4.0-7.20091126.el6                      fuse.x86_64 0:2.8.3-4.0.2.el6                                      gcalctool.x86_64 0:5.28.2-3.el6                                 gdm.x86_64 1:2.30.4-64.0.1.el6                                 gdm-plugin-fingerprint.x86_64  1:2.30.4-64.0.1.el6                 gdm-user-switch-applet.x86_64 1:2.30.4-64.0.1.el6                 gedit.x86_64 1:2.28.4-3.el6                                     git.x86_64 0:1.7.1-3.el6_4.1                                   glx-utils.x86_64 0:10.1.2-2.el6                                    gnome-applets.x86_64  1:2.28.0-7.el6                               gnome-bluetooth.x86_ 64 0:2.28.6-8.el6                          gnome-disk-utility.x86_64 0:2.30.1-2.el6                       gnome-disk-utility-libs.x86_64 0:2.30.1-2.el6                     gnome-disk-utility-ui-libs.x86_64 0:2.30.1-2. el6                  gnome-packagekit.x86_64 0:2.28.3-9.el6                         gnome-panel.x86_64  0:2.30.2-15.el6                            gnome-power-manager.x86_64 0:2.28.3-7.el6_4                      -------------- --------------     Purpose: Extract the name of each package and then install it for Yum. One go: for i in $ (cat 1.log |xargs -n 2 |awk  ' {print $1} ');d o  yum -y install  $i;d One fool's Way: cat 1.log |awk -f '   '   ' {print  $ '  >2.logcat 1.log |awk -f '   '   ' {print $3} '  >>2.logcat  1.log |awk -f '   '   ' {print $5} '  >>2.logcat 1.log |awk -f '   '   ' {print $7} '  >>2.logcat 2.log |xargs -i yum -y  install {}

Xargs usage Examples