linux office programs

GCC is the most widely used tool for compiling C and C ++ languages in Linux. Unlike C and Java, generating an executable file is divided into two parts: Compilation and connection. Let's take a brief look. For example, to compile a Test. c Application, compile the code first. The command is as follows:Gcc-c Test. c We will find that a file named Test is generated in the current directory. o binary file. This file is the product of compilation, but

Screen tmux tips: linux background programsGeneral introduction: Simple screen application: Screen myprogram // start a program through screen, or screen-L myprogram: turns on logging ~ /Screenlogtailctr + a and then press d // to run the program in the background, that is, detachscreen-ls // list the programs running in the screen background, and the IDS (such as 4491. pts-2.localhost) screen-r ID // resu

In Linux, cron is used to make Python programs run persistently. cronpython Under normal circumstances, it is difficult for a python program to keep running without errors, even if it is compiled as a sustainable file. Fortunately, many requests do not require 24 hours of uninterrupted operation, but can be run once every other time. The built-in cron in Linux ma

Http://www.einit.com/user1/11/archives/2006/3603.html. In Unix/Linux, you generally want to run a program in the background. Many of them use at the end of the program to run the program automatically. For example, to run MySql in the background:/Usr/local/MySQL/bin/mysqld_safe -- user = MySQL However, many of our

Http://chchwy.blogspot.com/2010/05/linux-objective-c.html How to compile objective-C Programs on Linux 1. Sort the following packages in sequence: Sudo apt-get-y install build-essentialSudo apt-get-y install gnustepSudo apt-Get install gobjcSudo apt-Get install gnustep-makeSudo apt-Get install libgnustep-base-Dev After security, we still need a command to ren

invoke the command specified by the command parameter. 　　The 127 nohup command has an error or cannot find the command specified by the commands parameter. 　　Otherwise, the exit status of the Nohup command is the command parameter that specifies the exit state of the commands. Nohup command and its output file Nohup command: If you are running a process and you feel that the process will not end when you exit the account, you can use the Nohup command. This command can continue to run the proce

the project containing this three source program file main[1] Generate target object file (OBJ):[2] The link is delivered as an executable file, main:Iii. managing multiple source program Files Usually we do not have a single source file program (Main.c/main.cpp) when writing a project, in general there will be multiple source files (. c/.cpp) and header files that need to be managed. As described earlier if there are three source files hello_world.c, say_ok.c, main1.c, every time when we modif

Windows, the. obj file, under Unix is the. o file. At compile time, the compiler needs the correct syntax, the correct declaration of functions and variables, the compiler only detects program syntax, and whether functions or variables are declared, and functions do not need to be defined.The syntax for UNIX under g++ is:g++-C File.cpp-C is the meaning of compile, this command will generate the FILE.O target file.2. Link: Find the target file where the function is to be used and link them toget

In order to complete the compilation first, the following steps are required:1. Go to the Linux subdirectory and perform make. (This step is patching.) ）2, return to the previous level directory, open file simplec.c, add header file #include 3. Remove static from the static void set_address in the following file:Connectto.cTcpsink.c3. Perform make at the root directory.Carries mistake one:When doing Shutdownc/tcpecho experiments, the client SHUTDOWNC

the same time. You're going to have to add a line to your main.c,extern void Function1 ();extern int function2 (char a);......This stuff.Your colleague will give you a header file One.h, the header file is actually the above extern content. You just have to do this in MAIN.C:#include "one.h"On the line, this is the whole copy of the one.h into the main.c.4. printf is very cool to use.printf used to be very cool.You just write it.#include Let your main.c know this function can be used.The proble

Remember this is the original play Cdlinux when, originally should be because of windows under the UltraISO to Cdlinux mirror changes cause the image can not boot, so use the command under Linux to operateThis should be the command to mount the ISO file:Mount-o loop/home/cdl/cdl.iso/mnt#mkdir/home/cdl/cdlinuxCp-r/mnt/*/home/cdl/cdlinuxUmount-r/mntChmod-r 777/home/cdl/cdlinuxThis should be the command to regenerate the ISO file:Cd/home/cdl/cdlinux./mki

code of Provincesfor Pcode in 11 12 13 14 15 21 22 23 31 32 33 35 36 37 41 42 43 44 45 46 50 51 5 2 65dofname=03004_${pcode}_${datdir}.datecho ${fname}./sdpt_qt1 ${datdir} 03004 ${pcode}fname=03005_${p Code}_${datdir}.datecho ${fname}./sdpt_qt1 ${datdir} 03005 ${pcode}doneOne of the SDPT_QT1 is the new program, the original is SDPT_QT.After writing to think of this benefit is how insignificant, just a method, after all, modify the timing task is also very simple.One of the benefits of using scr

First, System1. functionInvoking another program in a Linux application;2. UsageSystem ("/sbin/ifconfig");Second, Popen1, the function calls another program execution, while saving the results of the execution; 2, using the example#include 　　Linux applications call other programs to execute

First, in Eclipse, the Java program is made into a runnable jar package1. Simply package the SRC directory and the third-party jar in the Lib directory　　2. After selecting these two positions, "next", then "Finish", generate the Jar package3. Build a ZIP package for the project structureThen, the project into a zip package, note that only the required program directory structure and configuration folder can be4. Click "Finish" to complete the ZIP package compression5, the generated jar package a

C # to Java, install JDK on Linux Ubutu, and run Java programsThen choose Java, naturally the self-written program to be able to run on each OS,Here are the installation tutorials, which are installed online via the network, and then several commands are lost, and it's easy toI test effectiveInstall Oracle Java8 under UbuntuUbuntu-provided openjdk often have strange and strange errors, such as an IDE that suddenly collapses. Just java8, why not try ou

ZhangchangchangIn some cases, it is often necessary to start multiple terminals at the same time and let the terminal run its own initiative to run the corresponding command, thereby improving operational efficiency. Under Linux gnome-terminal start the terminal command,Gnome-terminal-x followed by the command run, Bash is the command of the Linux boot child shell, bash-c "command string to run", by nesting

after December 31, 2018Add users to the ACCP group, in Handy, Cucci, and the home directory using the folder with the same name as the account in the/tech/accp/directory. Where the Cucci user's login shell is set to/bin/shAdd all of the above accounts to the tech group3. Set directory Permissions and attributionSet the/tech directory group as tech to remove all permissions from other usersSet the genus of the/tech/benet directory to Benet, removing all permissions from other users; Set the genu

1. Automatically run the program at power-on startup After Linux is loaded, it initializes hardware and device drivers, and then runs the first process init. Init continues the boot process based on the configuration file to start another process. Typically, modifications are placed in the /ETC/RC or /ETC/RC.D or /etc/rc? D A script file in the directory that enables Init to start other programs automatical

Linux C program operating File Settings-general Linux technology-Linux programming and kernel information, the following is a detailed description. Generally, C Programs can only operate files below 4 GB, because the file pointer is 32-bit. If you try to read or write a file that exceeds 4 GB, the program will abort an

Problems encountered when compiling gtk programs in linux-general Linux technology-Linux programming and kernel information. The following is a detailed description. Because it is too dish, when you write a gtk interface program, start this program from the console and find that if it is a program created by a common u