In bash how to get printf take input interactively to print a sequence. I have tried the following:
read x; read y; printf '%s\n' {"$x".."$y"..5}
0
40
{0..40..5}
whence I am trying to get the output like this:
printf '%s\n' {0..40..5}
0
5
10
15
20
25
30
35
40
I have an html file contents copied to a text file in the following form:
... course 10> user_1 </a><br /><a class="reviewlink" href="https://www.foo.com/moodle/mod/quiz/review.php?attempt=1491">Review attempt<...
... course 10> user_2 </a><br /><a class="reviewlink" href="https://www.foo.com/moodle/mod/quiz/review.php?attempt=1498">Review attempt<...
From this using some shell command can I get the contents:
user_1 "https://www.foo.com/moodle/mod/quiz/review.php?attempt=1491"
user_2 "https://www.foo.com/moodle/mod/quiz/review.php?attempt=1498"
to another text file.
Here ... denotes some big unique text.
Edit
More elaborate form for a user:
<label for="attemptid_1502" class="accesshide">Select attempt</label></td><td class="cell c1 picture" id="mod-quiz-report-responses-report_r1_c1"><a href="https://www.foo.com/moodle/user/view.php?id=380&course=10" class="d-inline-block aabtn"><img src="https://www.foo.com/moodle/pluginfile.php/419/user/icon/moove/f2?rev=6942" class="userpicture" width="35" height="35" alt="Picture of user 1" title="Picture of user 1" /></a></td><td class="cell c2 bold" id="mod-quiz-report-responses-report_r1_c2"><a href="https://www.foo.com/moodle/user/view.php?id=380&course=10">user 1</a><br /><a class="reviewlink" href="https://www.foo.com/moodle/mod/quiz/review.php?attempt=1502">Review attempt</a></td><td class="cell c3" id="mod-quiz-report-responses-report_r1_c3">meethu</td><td class="cell c4" id="mod-quiz-report-responses-report_r1_c4">text</td><td class="cell c5" id="mod-quiz-report-responses-report_r1_c5">Finished</td><td class="cell c6 bold" id="mod-quiz-report-responses-report_r1_c6"><a href="review.php?q=62&attempt=1502">0.00</a></td><td class="cell c7" id="mod-quiz-report-responses-report_r1_c7"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=1" id="action_link5fa01d6f2fd9a29" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c8" id="mod-quiz-report-responses-report_r1_c8"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=2" id="action_link5fa01d6f2fd9a30" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c9" id="mod-quiz-report-responses-report_r1_c9"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=3" id="action_link5fa01d6f2fd9a31" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c10" id="mod-quiz-report-responses-report_r1_c10"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=4" id="action_link5fa01d6f2fd9a32" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c11" id="mod-quiz-report-responses-report_r1_c11"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=5" id="action_link5fa01d6f2fd9a33" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c12" id="mod-quiz-report-responses-report_r1_c12"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=6" id="action_link5fa01d6f2fd9a34" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c13" id="mod-quiz-report-responses-report_r1_c13"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=7" id="action_link5fa01d6f2fd9a35" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c14" id="mod-quiz-report-responses-report_r1_c14"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=8" id="action_link5fa01d6f2fd9a36" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c15" id="mod-quiz-report-responses-report_r1_c15"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=9" id="action_link5fa01d6f2fd9a37" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c16" id="mod-quiz-report-responses-report_r1_c16"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=10" id="action_link5fa01d6f2fd9a38" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c17" id="mod-quiz-report-responses-report_r1_c17"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=11" id="action_link5fa01d6f2fd9a39" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c18" id="mod-quiz-report-responses-report_r1_c18"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=12" id="action_link5fa01d6f2fd9a40" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td><td class="cell c19" id="mod-quiz-report-responses-report_r1_c19"><a href="https://www.foo.com/moodle/mod/quiz/reviewquestion.php?attempt=1502&slot=13" id="action_link5fa01d6f2fd9a41" class="" title="Review response" ><span class="que"><i class="icon fa fa-remove text-danger fa-fw icon" title="Incorrect" aria-label="Incorrect"></i><span class="notanswered">-</span></span></a></td></tr><tr class="" id="mod-quiz-report-responses-report_r2"><td class="cell c0" id="mod-quiz-report-responses-report_r2_c0"><input id="attemptid_1505" name="attemptid[]" type="checkbox" value="1505"
data-action="toggle"
data-toggle="slave"
data-togglegroup="quiz-attempts"
/>
I am trying to send multiple emails with unique fields from thunderbird with mail merge addon in ubuntu. How to add individual attachments using this method? I have tried adding a separate field Attachment in the .ods file and by adding file names in the format /home/user/Doc/1.pdf. But the files are not getting uploaded to the mail by using {{Attachment}} in the composed mail, only the text is /home/user/Doc/1.pdf shown. Also, the To section is not supporting {{Email}}, how to solve this?
How to create a user with access to selected applications installed in the system and read/write permission to only one directory in the file system?
Say, for example, one wants to create a user dummy with read and write access to only the directory /home/dummy and nowhere else. Also, dummy would be able to use the firefox browser and a TeX application like kile or texstudio, and no other applications installed on the system is accessible to dummy. Can this be achieved?
If it is not possible for the applications, can the part of restricting directory be done?
Update
The least property needed:
/home/user1 can't read /home/user2
By default user creation read access is not restricted.
I have installed Matlab 2020a in Ubuntu 20.04. When trying to run a code the Matlab program is getting killed, but it runs in another system perfectly fine. Checking resources while running shows that 8gb RAM and 10gb Swap are getting exhausted before getting killed.
Tried changing Java heap memory to around 1.5GB, as well as unchecking the maximum array limit option from workspace settings in Matlab preferences.
dmseg output has these lines
oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/[email protected],task=MATLAB,pid=14659,uid=1000
[ 2166.872604] Out of memory: Killed process 14659 (MATLAB) total-vm:24372208kB, anon-rss:7121400kB, file-rss:0kB, shmem-rss:4kB, UID:1000 pgtables:35440kB oom_score_adj:0
syslog has these lines
kernel: [16207.494793] Out of memory: Killed process 50687 (MATLAB) total-vm:22123872kB, anon-rss:6511936kB, file-rss:0kB, shmem-rss:92kB, UID:1000 pgtables:31144kB oom_score_adj:0
/usr/lib/gdm3/gdm-x-session[1638]: (EE) client bug: timer event9 tap: scheduled expiry is in the past (-998ms), your system is too slow
kernel: [16208.142159] oom_reaper: reaped process 50687 (MATLAB), now anon-rss:0kB, file-rss:0kB, shmem-rss:108kB
Is there a way I can limit the memory and swap used by matlab? Have tried ulimit with -m and -v flags, but then matlab won't open at all.
This issue is not there in windows in the same machine, so the issue seems only for MATLAB in Ubuntu. Is there a way to make it work in ubuntu?
I have /var/www/html/moodle as my website directory. When in mysite.conf the settings are as follows:
DocumentRoot /var/www/html
DirectoryIndex index.php
mysite.com gives an Index of/ page since there is only apache's index.html in the default location as index file.
How can I make mysite.com load /var/www/html/moodle/index.php?
I tried giving in /etc/apache2/sites-available/mysite.conf
DirectoryIndex /moodle/index.php
With this mysite.com loads the moodle homepage, but otherindex pages inside moodle are not loading.
How to solve this?
My site www.domainname.com loads apache2 'It works' page instead of the expected home page of moode which is located at /var/www/html/moodle. There is an index file index.php inside moodle directory but it is not taken by default. If I go to www.domainname.com/moodle the site homepage comes. The configuration file /etc/apache2/sites-available/domainname.conf is enabled. How to solve this?
<VirtualHost *:80>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
ServerName www.domainname.com
ServerAlias domainname.com
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html/moodle
DirectoryIndex "index.php"
# <Directory /var/www/html/>
# AllowOverride All
# </Directory>
# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
# error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
# For most configuration files from conf-available/, which are
# enabled or disabled at a global level, it is possible to
# include a line for only one particular virtual host. For example the
# following line enables the CGI configuration for this host only
# after it has been globally disabled with "a2disconf".
#Include conf-available/serve-cgi-bin.conf
RewriteEngine on
RewriteCond %{SERVER_NAME} =www.domainname.com
RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>
# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
I was trying to recover files from android phone using adb shell and test disk. But I am getting a read only filesystem error, even though the permissions to write is granted to the user.
adb devices
list the device attached. After I ran the following commands
adb shell
Inside the shell I did the following
user:/ $ su
user:/ # adb shell "stty raw; cat </dev/block/mmcblk0p56" > data.img
sh: can't create data.img: Read-only file system
How to solve this?
Update
Trying the proposed solutions:
$ sudo adb shell "stty raw; cat /dev/block/mmcblk0p56" > /home/user/android-backup/data.img
stty: tcgetattr standard input: Not a typewriter
cat: /dev/block/mmcblk0p56: Permission denied
Mounting code:
$ sudo mount -o remount,rw /dev/block/mmcblk0p56 /tmp
mount: /tmp: mount point not mounted or bad option.
I cannot play Amazon music library in Ubuntu 16.04 (64-bit) with google chrome Version 64.0.3282.186 (Official Build) (64-bit). I have installed flashplugin-installer. I get the error message Adobe Flash is Disabled when loading the site: https://music.amazon.in/. Although I give the option for run flash this time, it doesn't seem to work.
What is the procedure to do network printing from Ubuntu? The printer is connected to a system running Windows OS(Host System -Windows 7 (32-bit)). From Guest Systems running Windows OS, the network printing is possible. How to do the same from a Guest System running Ubuntu?
The version of Ubuntu : Ubuntu 17.04 64-bit.
Printer : Canon Imageclass MF4320d.
Update
I know that by running
watch -n 10 xdg-open https://duckduckgo.com
in the terminal, will open the specified site in a preferred browser at each 10 seconds. I am looking for a tweak which will close the tab in which the site is loaded after 5 seconds it loads. Briefly, I want to open and close a site at regular intervals from a terminal and should be able to stop the process whenever I need. Can anybody help me with this, please?
P.S. I have already tried browser extensions and I am looking for command-line ways to do it.
I am using Ubuntu 16.04 LTS with gnome. From yetserday onwards firefox crashes with the following error:
Inconsistency detected by ld.so: ../sysdeps/x86_64/dl-machine.h: 517: elf_machine_rela_relative: Assertion `ELFW(R_TYPE) (reloc->r_info) == R_X86_64_RELATIVE' failed!
adwaita@adwaita-multiverse:~$ firefox
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:3218:17: The 'icon-shadow' property has been renamed to '-gtk-icon-shadow'
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:6378:23: The '-gtk-image-effect' property has been renamed to '-gtk-icon-effect'
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:6388:15: The 'icon-shadow' property has been renamed to '-gtk-icon-shadow'
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:6438:13: The 'icon-shadow' property has been renamed to '-gtk-icon-shadow'
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:6551:16: The 'outline-radius' property has been renamed to '-gtk-outline-radius'
(firefox:12320): Gtk-WARNING **: Theme parsing error: gtk.css:6574:52: The :prelight pseudo-class is deprecated. Use :hover instead.
Inconsistency detected by ld.so: ../sysdeps/x86_64/dl-machine.h: 517: elf_machine_rela_relative: Assertion `ELFW(R_TYPE) (reloc->r_info) == R_X86_64_RELATIVE' failed!
adwaita@adwaita-multiverse:~$
adwaita@adwaita-multiverse:~$ firefox --version
Mozilla Firefox 49.0.2
adwaita@adwaita-multiverse:~$
How does Ubuntu distribution nomenclature is done? For example why does 14.04 Ubuntu is given the name "Trusty Thar"? Likewise what are the motivation for such nomenclatures for all the released versions? Also who is the authority to decide a name?
I am running matlab in linux. While running a script in matlab I get the following error. here RayMet_012007.ray_paths is the input located in a custom directory.
/bin/bash: line 0: type: RayMet_012007.ray_paths: not found
/bin/bash: line 0: type: RayMet_00.ray_paths: not found
Undefined function or variable 'AD'.
I couldn't figure out the problem. The script is working one. Also the matlab is installed in custom directory.
http://pastebin.com/CRSPpRzm (full script)
I am running virtualbox 4.3.10 in ubuntu 14.04 LTS. I have a working guest OS of open suse 13.1 in this virtualbox.
What I have done
I exported this appliance to ova file, so that I can use it in another system by importing the ova file. After the successful export to get the file filename.ova, I imported this file in virtualbox.The import was successful and this created another entry for the guest OS in virtualbox menu.
I thought after the successful import, the new guest OS will exactly run same as the old guest OS.
What happened
The boot screen comes ok, but the booting is not getting completed. It doesn't shows any error message also.
I have also tried
I have also tried copying the .vdi file for working guest OS and adding to virtualbox(in another system with windows host). There also the boot starts and hangs.
How to make it OK?
I want to create a text file which will add each command I am going to run on the terminal as a new line entry in the text file. i.e., I need to keep a record of what are the things I'm doing in the terminal. Further if I can keep a record of outputs I'm getting in the terminal, along with the inputs in the terminal, as a text file, it will be much better.
Each time I forget a command I have to search again in the Internet for the command.
Can I can make a file like above?
I have a .vdi file of OpenSUSE-13 in my host system Ubuntu 14.04LTS. Can I create a .iso image of OpenSUSE for installation, which contains all the applications in my vdi file?
The .vdi file is about 25GB in size and 11GB of that is the used space.
I found similar posts, but those answers didn't solve my issue. I need to know can I install custom Shell-themes in ubuntu-gnome? If yes what are the best custo shell-themes and where can I get it? In gnome-tweak-tool i cannot select anything under shell theme. Any solution? I have already installed icon themes.
How can I list all the ppa repositories added to my system and save it to a .txt file, so that I don't want to spend my time in searching for ppa's for fresh installations and i can just select a ppa line in my .txt file and append to the command sudo add-apt-repository? Also is there any other ways to do this in which i dont want to give the gpg keys manually?
I was trying to extend my / partition using ubuntu live cd after installation done before 6 months. For installing a software i needed 9GB more space in my root partition. The size of the root partition was 24gb only. To find a safe solution i used my virtual box OS, and after booting from ubuntu installation disk and extending the root partition using GParted worked like a charm. So I chosen to take the risk for my ubuntu 14.04 LTS version which is my host. After booting to a live ubuntu 14.04 cd I was able to delete an ntfs partition which was above my / partition for ubuntu. the resizing of my 24gb space to 61gb also didnt gave any error. But when i rebooted it ended up with a grub rescue menu. I tried to find a solution but nothing worked at all.
I did this one also:
sudo mount /dev/sda7 /mnt
sudo mount -o bind /dev/ /mnt/dev
sudo grub-install --root-directory=/mnt /dev/sda
sudo chroot /mnt /bin/bash
# Now within the chroot
sudo update-grub
exit
# Now outside chroot
This also didnt helped. Pls help.
