In Linux, I was wondering how to get from command line information about:
word (i.e. the size that the CPU can process at one time),
address size (ie the number of bits in an actual address),
address bus size (not sure if it is the same as address size by
definition, but I think they are differ...
If I run Vim and then open an encrypted file it asks for the encryption password. If I close the window where the file was opened (without closing vim) and then reopen the file, the password prompt is not shown anymore. Is there any setting to modify this behavior? I'd like vim to ask the passwor...
In recent versions of popular Linux distributions (Ubuntu, Fedora, Mint, Debian) I always have to put acpi=off into the kernel parameter list before I want to boot the computer. This happens to both the live CDs and the installed version. I have been unable to find information on fixing this. I g...
Currently, the font specification calls Georgia as the primary serif for question titles. While undeniably an attractive font, its zero renders almost exactly the same as a lower case o. This introduces a significant level of ambiguity:
While I think it extremely unlikely that there is a serif...
@MichaelMrozek You'd think they'd answer follow up questions if they bothered to be in chat at all, but they never seem too. Anyway the first one (Thursagan) was from a <13 yo minor whos account is also linked with a high rep / low credibility user on EL&U that has been suspended recently for smurfing.
Currently, the font specification calls Georgia as the primary serif for question titles. While undeniably an attractive font, its zero renders almost exactly the same as a lower case o. This introduces a significant level of ambiguity:
While I think it extremely unlikely that there is a serif...
This works:
nmap <silent> <S-t> :call InventTab()<CR>
function InventTab()
set expandtab!
if &expandtab
retab
echo 'spaces'
else
retab!
echo 'tabs'
endif
endfunction
I've tried to change it to a one-liner:
nmap <silent&g...
I am in the process of moving my files from one Debian machine to another so that I can use the old machine for a different purpose. I do not want to miss any file because I will be formatting the old machine's hard drive irrecoverably.
Thinking about this more, I realized that all of the files...
I have an IBM blade server and we've installed RedHat Linux on the machine.
How can we check if we have both disks running as a mirror, or if everything is only running on a single disk? What commands can I use to discover this?
Diana
how to create & grant a normal user like 'sybase' with root privileges?
i found useradd, adduser, passwd to be useful, but are there any other files to modify to get 'root' like privileges so that user can do installation tasks.
I am trying to setup nautilus with the nautilus-terminal plugin. I installed it with yum, and yum list installed shows version 0.7-2.fc15 installed. Files nautilus-terminal.py, nautilus-terminal.pyc, and nautilus-terminal.pyo are in the python folder in /usr/lib64/nautilus/extensions-2.0. There i...
I have a folder with 100 jpg images. I want to convert these images into a multi-page pdf file, with all the images (cropped to A4 size). They are already in the correct rotation.
Which tools should I use?
I'm working with vim editor and I found y,yw respectively to copy a line and a word but how can i do following task in vim?
www.pack.google.com
From this line how can i copy and paste ack.goo using vim editor?
hoping for quick and positive response.
I would like to use systemd on my Gentoo box. Unfortunately, I have /usr on a separate partition and Gentoo puts libdbus into /usr/lib, leading to a segfault on boot, since systemd relies on dbus.
Hence I would like to generate an initramfs using dracut that mounts /usr for me. This partition is...
I'm trying to add ebtables to a little router box. I went and got a binary compiled for the correct architecture, and put it on the box in /sbin/. When I do /sbin/ebtables, the shell says /bin/sh: /sbin/ebtables: not found, but I can do ls -l /sbin/ebtables and it shows up perfectly:
-rwxr-xr-x ...
My question is: Which buffer overflow / stack smashing defenses (if any) are enabled by default in Debian 6.0 (Squeeze)?
Ubuntu has a handy summary table showing the main security features of each Server edition release, but I haven't found something similar for Debian. Ubuntu mentions:
Stack ...
Say I plug in several USB drives which don't get automatically mounted. How can I find out which device file belongs to which physical device, so I can mount it for example?
I'm running Mac OS X but I rather like an answer that works on all (or at least the most popular) Unix systems. I had this...
I have been setting up Linux desktops for a non-profit radio observatory. For me, this was the first time I had to think about "deploying" several identical machines, centralizing login, home directories and so on. It quickly became clear to me that, perhaps contrary to intuition, the "everything...
Is there any way to run chsh -s /bin/zsh without being root and without being asked for the password? I want to put it into a non-interactive script that isn't called by root.
Is it possible to use 2 commands in the -exec part of find command ?
I've tried something like
find . -name "*" -exec chgrp -v new_group {} ; chmod -v 770 {} \;
and I get
find: missing argument to -exec
chmod: cannot access {}: No such file or directory
chmod: cannot access ;: No such file...
@Tshepang Not really. These defenses only make exploits harder, they don't make the vulnerabilities themselves inoffensive. Exploit writers have learned to work around these defenses, so you only get protection from older or less polished exploits.
So, for example, when I type man ls I see LS(1). But if I type man apachectl I see APACHECTL(8) and if I type man cd I end up with cd(n).
I'm wondering what the significance of the numbers in the parentheses are, if they have any.
@Tshepang It's wired to the same thing as the vote-to-close button that auto-adds comments if there is not already a comment with the link somewhere. If you want to re-word it you can always delete and repost since the comment is owned by you.
If you pass -1 as the process ID argument to either the kill shell command or the kill C function, then the signal is sent to all the processes it can reach, which in practice means all the processes of the user running the kill command or syscall.
su -c 'kill -TERM -1' bob
In C (error checkin...
Is there anywhere you can download a manpage for every builtin commands?
I know you can just use help or man bash and search to find info about it, but I want them separated, so I can just do man read and get the read manpage.
@Gilles I presume we're reading the same man pages, but when I read mine and see the -1 flag I think "this is an easy way to make the whole system crash and burn" and you think "this is a clever substitute for pkill -u if I run it as that user."
pkill is the right answer for most process matches, but there's a POSIX-compliant syscall for targetting all of a user's processes
kill -1 has the advantage that it's atomic, it'll kill all of the user's processes. Other methods take two steps: collect the PIDs, then kill, and a process could fork in between.
What is going on at SE today? On English.SE everybody is using greek characters in their names. On ServerFault everybody is using the same gravitar and coyping each others answers.
I assume it's not just me: Why do some users have added special characters in their usernames? The list includes:
Kit (now KitΘδς)
z7sg (now z7sg Ѫ)
JSBangs (now JSBᾶngs)
Martha (now Marthaª)
aedia λ
Alain Pannetier Φ
Rhŵdri
RegDwight Ѭſ道 ♦
Matt Ellen Д
Many of our top users seem to have avatars with a picture of themselves in a car with what appears to me to be Paddington Bear:
So what is the story behind this?
It is an interesting exercise in noticing how much affect the gravitars actually have. I realized a while back that anybody with pink made me cringe on the chance that it might be Lance. Even if I don't actually bother to read names they are still a visual clue that unconsciously identifies some of the frequent contributors.
I am running an executable in Cygwin Bash Shell. The executable is compiled Fortran code; I have placed a Fortran statement PRINT *, "done" at the end of my code (just before the final line of code, END PROGRAM aug3, where aug3 is the name of my program. The code appears to compile fine and I g...
I have a NAS running Linux behind a firewall at home. I want to access it remotely using a few services such as a Transmission GUI (port 9091) and webmin (port 10000), but through an SSH tunnel on port 22.
For simplicity, I wanted to leave as many net-facing ports closed and only opened up port ...
I'm in search of a filesystem benchmark utility. I basically want to run a test which should be able to do random reads/writes on a specified drive with a given block size. e.g. a 4K random write on a linux system.
Thanks in advance.
The Execute permission makes sense for files (which include scripts etc), but when it comes to directories, write (w) permission works the same way as execute (x), right? Which means, if we are giving write permission to a directory we also normally check "x" (for execute) for that directory as w...
In Linux, I was wondering how to get from command line information about:
word (i.e. the size that the CPU can process at one time),
address size (ie the number of bits in an actual address),
address bus size (not sure if it is the same as address size by
definition, but I think they are differ...
Currently, the font specification calls Georgia as the primary serif for question titles. While undeniably an attractive font, its zero renders almost exactly the same as a lower case o. This introduces a significant level of ambiguity:
While I think it extremely unlikely that there is a serif...
I am in the process of moving my files from one Debian machine to another so that I can use the old machine for a different purpose. I do not want to miss any file because I will be formatting the old machine's hard drive irrecoverably.
Thinking about this more, I realized that all of the files...
I have an IBM blade server and we've installed RedHat Linux on the machine.
How can we check if we have both disks running as a mirror, or if everything is only running on a single disk? What commands can I use to discover this?
Diana
how to create & grant a normal user like 'sybase' with root privileges?
i found useradd, adduser, passwd to be useful, but are there any other files to modify to get 'root' like privileges so that user can do installation tasks.
My question is: Which buffer overflow / stack smashing defenses (if any) are enabled by default in Debian 6.0 (Squeeze)?
Ubuntu has a handy summary table showing the main security features of each Server edition release, but I haven't found something similar for Debian. Ubuntu mentions:
Stack ...
How can I determine if a font is available on a user's system using bash?
If it matters, I'm using Gnome.
Is it possible to use 2 commands in the -exec part of find command ?
I've tried something like
find . -name "*" -exec chgrp -v new_group {} ; chmod -v 770 {} \;
and I get
find: missing argument to -exec
chmod: cannot access {}: No such file or directory
chmod: cannot access ;: No such file...
What are the differences between manX pages?
Why are they separated?
So, for example, when I type man ls I see LS(1). But if I type man apachectl I see APACHECTL(8) and if I type man cd I end up with cd(n).
I'm wondering what the significance of the numbers in the parentheses are, if they have any.
If you pass -1 as the process ID argument to either the kill shell command or the kill C function, then the signal is sent to all the processes it can reach, which in practice means all the processes of the user running the kill command or syscall.
su -c 'kill -TERM -1' bob
In C (error checkin...
Many of our top users seem to have avatars with a picture of themselves in a car with what appears to me to be Paddington Bear:
So what is the story behind this?
I am running an executable in Cygwin Bash Shell. The executable is compiled Fortran code; I have placed a Fortran statement PRINT *, "done" at the end of my code (just before the final line of code, END PROGRAM aug3, where aug3 is the name of my program. The code appears to compile fine and I g...
I'm in search of a filesystem benchmark utility. I basically want to run a test which should be able to do random reads/writes on a specified drive with a given block size. e.g. a 4K random write on a linux system.
Thanks in advance.
