I am on an up-to-date Ubuntu 12.04 system. I have unixodbc (v2.2.14 from ubuntu repos), MySQL and its relevant drivers installed. Also connected to a valid DSN. Verified by issuing isql DBName UName passwd.
I am trying to compile a C application that interacts with the database using ODBC. Almost everywhere I searched seemed to indicate that I should have "sql.h" installed somewhere. A find / -iname sql.h -print showed I don't have it.
So my question is: where is it? Did something go wrong with the install (no errors were reported though)? And what steps do you recommend? Reinstallation? Compilation from source code (the latest version?)?
You need to install the unixodbc-dev package to get the development header files.
sudo apt-get install unixodbc-dev
The -dev packages contain the require header files required to compile and build programs using these headers to make calls to the library. The library files themselves would be part of the regular package i.e. unixodbc in your case.
If you want to know which package provides a certain file, you could use apt-file:
sudo apt-file update
sudo apt-file find sql.h
Related
I was watching this, and, as you can see, the first command I am told to put in is:
sudo apt-get install python-setuptools
When I do this, it outputs:
sudo: apt-get: command not found
I have no idea why this is the case.
How can I resolve this so I am following the tutorial correctly?
Mac OS X doesn't have apt-get. There is a package manager called Homebrew that is used instead.
This command would be:
brew install python
Use Homebrew to install packages that you would otherwise use apt-get for.
The page I linked to has an up-to-date way of installing homebrew, but at present, you can install Homebrew as follows:
Type the following in your Mac OS X terminal:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
After that, usage of Homebrew is brew install <package>.
One of the prerequisites for Homebrew are the XCode command line tools.
Install XCode from the App Store.
Follow the directions in this Stack Overflow answer to install the XCode Command Line Tools.
Background
A package manager (like apt-get or brew) just gives your system an easy and automated way to install packages or libraries. Different systems use different programs. apt and its derivatives are used on Debian based linux systems. Red Hat-ish Linux systems use rpm (or at least they did many, many, years ago). yum is also a package manager for RedHat based systems.
Alpine based systems use apk.
Warning
As of 25 April 2016, homebrew opts the user in to sending analytics by default. This can be opted out of in two ways:
Setting an environment variable:
Open your favorite environment variable editor.
Set the following: HOMEBREW_NO_ANALYTICS=1 in whereever you keep your environment variables (typically something like ~/.bash_profile)
Close the file, and either restart the terminal or source ~/.bash_profile.
Running the following command:
brew analytics off
the analytics status can then be checked with the command:
brew analytics
As Homebrew is my favorite for macOS although it is possible to have apt-get on macOS using Fink.
MacPorts is another package manager for OS X:.
Installation instructions are at The MacPorts Project -- Download & Installation after which one issues sudo port install pythonXX, where XX is 27 or 35.
Conda can also be used as package manager. It can be installed from Anaconda.
Alternatively, a free minimal installer is Miniconda.
apt-get command is only available on Debian or Debian-based Linux distributions (such as Ubuntu, Linux Mint, Kali). It is not accessible on macOS. Alternatively, you can use package managers like Homebrew, MacPorts, and Nix. You can find equivalent commands for each as follows
brew install package_name
sudo port install package_name
nix-env -i package_name
Before installing above package managers, you need to install XCode first. Follow the operation instructions from this guide How to Fix "sudo apt-get command not found" Error on Mac Terminal.
Alternatively You can use the brew or curl command for installing things, wherever apt-get is mentioned with a URL...
For example,
curl -O http://www.magentocommerce.com/downloads/assets/1.8.1.0/magento-1.8.1.0.tar.gz
I need to backup iphone with libimobiledevice, using ubuntu, the device is detected but going to launch the backup commands the following error is displayed:
Started "com.apple.mobilebackup2" service on port 49343.
Could not perform backup protocol version exchange, error code -1
What could it depend on?
Several Github issues have reported this problem, like this one.
Solution:
you need to use latest version of idevicebackup and libimobiledevice
Indeed, if you use Ubuntu 20.04 (for instance), the libimobiledevice package is outdated, as of now.
If that's your case, you'll have to either wait for the next Ubuntu release (22.04) or compile it from source, what may become necessary at some point after the release of Ubuntu 22.04 anyway.
Disclaimer: downside of compiling yourself is that your binaries are not managed by the package manager. You'll have to update yourself, git pulling or downloading the newest source code releases and re-compiling everything everytime. You might have to redo all of this after a distribution upgrade. Upside is that your binaries do work...
Note: compilation steps are described on the official site only for debian; I could perform them equally well on a Linux Mint 20.3 (based on Ubuntu, based on debian). OP does not mention the OS he or she uses, but debian based seem to be the only ones available for now, so what follows should work on debian based OSes.
Compilation from source, step by step:
uninstall the official package and its dependencies and:
install the build dependencies: sudo apt install build-essential checkinstall git autoconf automake libtool-bin libplist-dev libusbmuxd-dev libssl-dev usbmuxd (see "from source" here)
get libimobiledevice source code from its repo, using for instance git clone https://github.com/libimobiledevice/libimobiledevice.git. You might get to the releases page and use the latest tar.gz instead (1.3 at the moment).
also get source code of other libraries required by libimobiledevice: libplist, libimobiledevice-glue and libusbmuxd. (I also compiled usbmuxd instead of using the official package, but I am not sure it is necessary). For each one of them, you can git clone it or download and untar the latest source code release, if available.
choose a prefix directory, where libraries and binaries will go. Create it if necessary (official libimobiledevice site suggests /opt/local and I will use this too in the next steps; in order for the compilation to work, you'll have to sudo mkdir /opt/local and export PKG_CONFIG_PATH=/opt/local/lib/pkgconfig before starting the first compilation)
to compile and install, cd to the root of each git-cloned (or source-downloaded) directory (in this order: lipblist, libimobiledevice-glue, libusbmuxd and libimobiledevice, because each one depends on the previous one) and execute, in each one of them: ./autogen.sh --prefix=/opt/local, then make and finally sudo make install. (Note, the autogen line for libimobiledevice may be ./autogen.sh --prefix=/opt/local --enable-debug, as suggested here).
Having done all of this, the iphone was not mounted automatically, I had to manually run idevicepair pair and then could mount it using ifuse ./iphone_mount_point/ (do sudo apt install ifuse if necessary) and perform a backup using idevicebackup2 backup --full iphone_backup/. Read the help of idevicebackup2 for more information.
I'm trying to write a C code that will make use of the memory information in Linux kernel (Virtual address space of a process, status of a process and such info.)
I'll need to include the below headers to get these info.
#include<linux/init.h>
#include<linux/module.h>
#include<linux/mm.h>
The actual files exists under the linux folder, but when compiling the file using gcc it returns that
No such file or directory
Can someone please explain why i'm getting this error! and what should i do?
I've already compiled the Kernel and installed all updates available (kernel version 3.16.0)
The answer to your question.
Install the missing package kernel-devel using apt-get
NOTE: I've mentioned apt install package you can use what is supported on your system for example yum.
If you're not able to install kernel-devel then you can try this which install generic Linux headers.
sudo apt-get update && sudo apt-get install linux-headers-`uname -r`
Then you can check where the init.h or module.h using locate utility
and then add the path in your compilation using -I flag.
gcc -g your_file.c -I/usr/path/of/the/kernel/header/include
I am new in json and I don't know how to use but I found compare to XML json is better so, I am learning json in C programming in Ubuntu 14.0LTS.
I followed https://linuxprograms.wordpress.com/2010/05/20/install-json-c-in-linux/.
In this link, I installed libjson0 with the help of first command but when I installed libjson – debug symbols package with the help of second command which is mentioned in link then showing "E: Unable to locate package libjson0-dbg".
Also I gone through https://github.com/json-c/json-c. After cloning moved to json-c directory, in json-c directory I did sh autogen.sh then showing "autogen.sh: 2: autogen.sh: autoreconf: not found".
Why autoreconf is not works ? When I installed CppUTest and other stuffs then it works.
I also install build-essential which found in google for above problems but it can't works for me.
How can I installed cjson in a proper manner and how to use with the C-programms.
Try below commands:
$ sudo apt-get install libjson-glib-1.0-0 libjson-glib-1.0-0-dev
If you want to debug your programs and see the various steps of serializing/deserializing you can also install the libjson-glib – debug symbols package
$ sudo apt-get install libjson-glib-1.0-0-dbg
For documentation related to json-glib, you must install the following package
$ sudo apt-get install libjson-glib-1.0-0-doc
This documentation will then be available in file:///usr/share/gtk-doc/html/json-glib/index.html
Maybe your problem is related with the path.
The library is installed correctlly but you have tot tell the system where. Here a post on how to do it in Ubuntu How to set the environmental variable LD_LIBRARY_PATH in linux
A script I need to run uses tempfile, but I don't have that on my Mac. I do use Macports. How can I find out which Macports package I need to install to get tempfile?
tempfile is a shell command used in scripting. It's an ELF binary on my Linux box and belongs to the debianutils package, as shown by dpkg -S /bin/tempfile. I Installed the Macports debianutils package and now have tempfile.
Just wondering how I'll figure this out if I don't have a Linux box handy...
Is tempfile a Python library? If so, you should be able to install it with pip if you have it.
On another note, you should probably switch to Homebrew as your package manager.