From the document said that the option --count going to
prefix lines by the number of occurrences
but after I do some test it seems doesn't work.
$ echo -e "a\na\b\nc" |uniq --count
1 a
1 a
1 c
Should the line 'a' occurs 2 times?
# fdisk -l
Disk /dev/sda: 34.4 GB, 34359738368 bytes
255 heads, 63 sectors/track, 4177 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000d5d11
Device Boot Start End Blocks Id System
/dev/sda1 1 1265 10155008 83 Linux
/dev/sda2 1265 1457 1544192 82 Linux swap / Solaris
My virtual machine have 34.4 GB disk, I had already divided it into 2 partitions /dev/sda1 (9.68 GiB) for root path and /dev/sda2 (1.47 GiB) for swap area, so that I have remain free space about 20.84 GiB
I can format unallocated space via Gparted, but If I want to use command line such as mke2fs to handle this job, how I can refer to that free space to complete this command line.
mke2fs -jv /dev/<xxx>
I tried to run a script that return this error messaged:
Could not find gem 'eventmachine (= 0.12.10) ruby' in the gems
available on this machine. Run `bundle install` to install missing gems.
Results of sudo bundle install :
Fetching gem metadata from http://rubygems.org/.........
Fetching gem metadata from http://rubygems.org/..
Using addressable (2.2.8)
Using ansi (1.4.3)
Using daemons (1.1.9)
Using data_objects (0.10.10)
Using dm-core (1.2.0)
Using dm-do-adapter (1.2.0)
Using dm-migrations (1.2.0)
Using do_sqlite3 (0.10.10)
Using dm-sqlite-adapter (1.2.0)
Installing eventmachine (0.12.10) with native extensions
Gem::Installer::ExtensionBuildError:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... yes
checking for inotify_init() in sys/inotify.h... yes
checking for writev() in sys/uio.h... yes
checking for rb_thread_check_ints()... yes
checking for rb_time_new()... yes
checking for sys/event.h... no
checking for epoll_create() in sys/epoll.h... yes
creating Makefile
make compiling page.cpp
compiling sigs.cpp
compiling files.cpp
compiling emwin.cpp
compiling cplusplus.cpp
compiling pipe.cpp
compiling kb.cpp kb.cpp:
In member function 'virtual void KeyboardDescriptor::Read()':
kb.cpp:79:27: warning: ignoring return value of '‘ssize_t read(int, void*, size_t)', declared with attribute warn_unused_result [-Wunused-result] compiling rubymain.cpp
rubymain.cpp:
In function 'VALUE t_connect_server(VALUE, VALUE, VALUE)': rubymain.cpp:468:42: error: format not a string literal and no format arguments [-Werror=format-security]
rubymain.cpp:
In function 'VALUE t_bind_connect_server(VALUE, VALUE, VALUE, VALUE, VALUE)': rubymain.cpp:488:42: error: format not a string literal and no format arguments [-Werror=format-security]
cc1plus: some warnings being treated as errors make: *** [rubymain.o] Error 1
Gem files will remain installed in /var/lib/gems/1.9.1/gems/eventmachine-0.12.10 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/eventmachine-0.12.10/ext/gem_make.out
An error occurred while installing eventmachine (0.12.10), and Bundler cannot continue.
Make sure that `gem install eventmachine -v '0.12.10'` succeeds before bundling.
Results of sudo gem install eventmachine -v '0.12.10' :
Building native extensions. This could take a while...
ERROR: Error installing eventmachine:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... yes
checking for inotify_init() in sys/inotify.h... yes
checking for writev() in sys/uio.h... yes
checking for rb_thread_check_ints()... yes
checking for rb_time_new()... yes
checking for sys/event.h... no
checking for epoll_create() in sys/epoll.h... yes
creating Makefile
make
compiling page.cpp
compiling sigs.cpp
compiling files.cpp
compiling emwin.cpp
compiling cplusplus.cpp
compiling pipe.cpp
compiling kb.cpp
kb.cpp: In member function ‘virtual void KeyboardDescriptor::Read()’:
kb.cpp:79:27: warning: ignoring return value of ‘ssize_t read(int,
void*, size_t)’, declared with attribute warn_unused_result
[-Wunused-result]
compiling rubymain.cpp
rubymain.cpp: In function ‘VALUE t_connect_server(VALUE, VALUE,
VALUE)’:
rubymain.cpp:468:42: error: format not a string literal and no format
arguments [-Werror=format-security]
rubymain.cpp: In function ‘VALUE t_bind_connect_server(VALUE, VALUE,
VALUE, VALUE, VALUE)’:
rubymain.cpp:488:42: error: format not a string literal and no format
arguments [-Werror=format-security]
cc1plus: some warnings being treated as errors
make: *** [rubymain.o] Error 1
Gem files will remain installed in
/var/lib/gems/1.9.1/gems/eventmachine-0.12.10 for inspection.
Results logged to
/var/lib/gems/1.9.1/gems/eventmachine-0.12.10/ext/gem_make.out
Results of ruby -v :
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
I have already installed libeventmachine-ruby and ruby-eventmachine.
cat /etc/passwd |grep postgre
postgres:x:115:127:PostgreSQL administrator,,,:/var/lib/postgresql:/bin/bash
apt-cache show postgresql
Package: postgresql
Priority: optional
Section: database
Installed-Size: 65
Maintainer: Ubuntu Developers <[email protected]>
Original-Maintainer: Debian PostgreSQL Maintainers <[email protected]>
Architecture: all
Source: postgresql-common (136)
Version: 9.1+136
Depends: postgresql-9.1
Filename: pool/main/p/postgresql-common/postgresql_9.1+136_all.deb
Size: 5468
MD5sum: 34f5a1373ad5cd0b6f5aa3e7af06c9e7
SHA1: 6f271758bd51c23614b12fd63fb711ecfa43e9e5
SHA256: e8921a22b560e81f57a2a00001e31ba1036f67a8e7f151bf8f977b4919fc559a
Can I replace that /bin/bash with /bin/false ?
My string look like this..
foo<..............................
bar</............................
I want to pipe for output as
foo
bar
Delete all characters after a first < found each line.
Situation: If I entered a copy command like cp -rf /src/ /dsc/ then I am waiting several minutes for copy large directories. I forgot to put -v flag to verbose an output, Can I do it during copying?
Possible Duplicate:
What's the recommended way to enable / disable services?
I forgot it, That program is in ubuntu official repositories
From my memory... That program have a [ ] box for tick # before each services.
It is not chkconfig, sysv-rc-conf, Thanks!
There is a wordlist look like this;
123
b
1
4rr
f
k3j3
gg
Then I needed to sort these words by string length (doesn't matter which start with numeric or string both are okay)
The output should be this:
b
1
f
gg
123
4rr
4rr
Is there a sort command that allows me to do this?
I have already tried gwibber,twitux, destroy twitter,smuxi,gtwitter,choqok,qwit and hotot.
only hotot could configured sock5 proxy but not all traffic over sock5 (I captured packets using wireshark and I found images link not be included.)
I already read it from manual but I can't see difference..
su - change user ID or become superuser
sudo -s [command]
The -s (shell) option runs the shell specified by the SHELL environment variable if it is set or the shell as specified in passwd(5). If a
command is specified, it is passed to the shell for execution. Otherwise, an interactive shell is executed.
sudo -i disappear description in manual
I just downloaded some materials, but the extensions are not recognized by Ubuntu.
I have a bunch of files names name.iso.001, name.iso.002 and so on.
How I can extract or mount it?
I was connected my OpenSSH, but What's the command for ssh to find all files which are *.png and get them at the same time, recursively
I just install LAMP by using a command line. sudo apt-get install lamp-server^
it's work! then I needed to uninstall them so I tried to sudo apt-get remove lamp-server^
by the way, It's show me to messages below....
The following extra packages will be installed:
libsdl1.2debian-alsa
The following packages will be REMOVED:
apache2 apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common bluez-cups cups cups-driver-gutenprint cups-pdf foo2zjs gdm gdm-guest-session
gecko-mediaplayer gnome-applets gnome-control-center gnome-media gnome-mplayer gnome-panel gnome-session gnome-settings-daemon goldendict gstreamer0.10-pulseaudio
hpijs hplip hplip-cups indicator-applet indicator-applet-appmenu indicator-applet-complete indicator-sound libapache2-mod-php5 libapr1 libaprutil1
libaprutil1-dbd-sqlite3 libaprutil1-ldap libasound2-plugins libcanberra-pulse libdbd-mysql-perl libdbi-perl libhpmud0 libhtml-template-perl libmysqlclient16
libnet-daemon-perl libphonon4 libplrpc-perl libpulse-browse0 libpulse-mainloop-glib0 libpulse0 libqtwebkit4 libsane-hpaio libsdl1.2debian-pulseaudio libsnmp15
libwrap0 mplayer mysql-client-5.1 mysql-client-core-5.1 mysql-common mysql-server
mysql-server-5.1 mysql-server-core-5.1 phonon phonon-backend-gstreamer php5-cli php5-common php5-mysql pulseaudio pulseaudio-esound-compat
pulseaudio-module-bluetooth pulseaudio-module-gconf pulseaudio-module-x11 pulseaudio-module-zeroconf pulseaudio-utils pxljr python-speechd speech-dispatcher splix
ssl-cert tcpd vlc-plugin-pulse
What's going on? I have to remove pulseaudio, mplayer and gdm ? Is it concerned with LAMP?
next, I try to using a command line sudo apt-get --purge remove apache2
These result yield...
The following packages will be REMOVED: apache2*
Is it safe for do like this? I intend to completely uninstall LAMP.
I want to find all files which contain a specific string of text. The grep command works, but I don't know how to use it for every directory (I can only do it for my current directory). I tried reading man grep, but it didn't yield any help.
My php code not working under directory of mod_userdir (~/user) but working fine at /var/www/ , how I can dealing with this problems ? when I open a php file under ~/user my browser prompt to download
I just installed LAMP, vsftpd on Ubuntu server 11.04 64bits and I'm going to to adduser for ftp and let's users (in private LAN) upload files to public in private LAN such as http://local-server-ip/username/ could anyone recommend link or help me list these steps what I should to do? I try it before with Googling and I getting a lot of problems about permission after users add files into my specific path of apache2, when anyone open in browser it show "Forbidden: You don't have permission to access /... on this server." then I re-install it. (for remove my dirty configuration).. Sorry for my terrible English
I just re-install my Ubuntu and forgot name of Apache2 service indicator, it's a green button at start and red at stop..
I'm new with Ubuntu and used the command sudo -s to become root and executed nautilus to open my Nautilus Elementary as root.
While managing my files, I wrongly pressed the "Delete" button on my important folder.
I thought that folder will going to Trash folder, but if I click on Trash (in nautilus running as root) my nautilus was immediately closed, with the below error in a terminal:
** (nautilus:30221): CRITICAL **: nautilus_file_get_location: assertion `NAUTILUS_IS_FILE (file)' failed
(nautilus:30221): GLib-GIO-CRITICAL **: g_file_get_uri: assertion `G_IS_FILE (file)' failed ** ERROR:nautilus-window-manage-views.c:819:begin_location_change: assertion failed: (location != NULL)
On other user accounts, the trash folder seems to be in .Trash, but but in /root, there is no such directory.
Where is my folder that I deleted?
For RTMP, I already tried RTMPDump. It's very difficult and complicated to use in the terminal. Is there a GUI-based alternative?
For MMS, I already tried Firefox's plugin, and some download manager. It downloads only a junk file or stream file, not full at all.
And saving with VLC media player, it's working, but it takes a very long time to do (I think VLC media player is converting the file format after the download. Can I save without converting?)
It's show on system indicator, I found solution in ubuntuforum to use command sudo echo 3 | sudo tee /proc/sys/vm/drop_caches
It's work, but why my ubuntu not handle by itself?