command

问题 Summary I'm currently writing an application where I have located my SQL instructions into a project's parameters. Within the code, I get the value of my query which returns the query itself. Let's for instance say that my SQL query is like so: select col1, col2, col3 from my_table Besides, col1 , col2 and col3 are from different tables and are migrated as foreign key into my_table. So, when it comes to the insert, I have to perform multiple INSERT statements to get the values from the other

问题 I've started to "play around" with PowerShell and am trying to get it to "behave". One of the things I'd like to do is to customize the PROMPT to be "similar" to what "$M$P$_$+$G" do on MS-Dos: A quick rundown of what these do: Character | Description $m The remote name associated with the current drive letter or the empty string if current drive is not a network drive. $p Current drive and path $_ ENTER-LINEFEED $+ Zero or more plus sign (+) characters depending upon the depth of the pushd

问题 I'm creating a Powershell script to deploy some code and part of the process is to call a command-line compression tool called RAR.EXE to back-up some folders. I'm attempting to dynamically build out the parameters and then have powershell call the command with the variables but I'm running into trouble. It isn't working... Run the following script and you should see what I'm talking about. The parameters being passed in as a variable are being mangled. If I pass the entire command +

问题 I'm trying to figure out how to run a command at boot, like I would type it into the console. I'm using Rasbian with my Raspberry Pi, but I think this question is the same for Debian in general. The command I'm trying to run is: sudo screen mono server.exe I tried the following solution, but since I just started with Linux, I'm not sure if this is correct. #! /bin/sh # /etc/init.d/server ### BEGIN INIT INFO # Provides: server # Required-Start: $remote_fs $syslog # Required-Stop: $remote_fs

问题 Im having problems trying to empty a folder in my script. This is working in my command line: rm -r Folder1/Folder2/* But if in my script I do this: DIR="Folder1/Folder2/" rm -r "$DIR*" It says "rm: Folder1/Folder2/*: No such file or directory", where is the problem? Im running the script in the same folder as I tried the command. 回答1: Glob expansion doesn't happen inside quotes. Try: rm -r -- "$DIR"* (Just make really sure you don't put a space after the quotes.) 回答2: rm -r $DIR* That should

问题 I am trying to run the command CP at the command prompt on windows 7 but I'm getting: 'cp' is not recognized as an internal or external command, operable program or batch file. Do I need to install any software to run cp command? If so what? 回答1: it is a unix/linux command. Download the cygwin package from cygwin.com 回答2: By default , there's no cp in Windows Command Prompt (cmd.exe). The equivalent cmd.exe command is copy . cp is a Unix command. If you can use PowerShell instead, which

问题 In my shell script, my last lines are: ... echo "$l" done done exit I have Terminal preference set to "When the shell exits: Close the window". In all other cases, when I type "exit" or "logout", in Terminal, the window closes, but for this ".command" file (I can double-click on my shell script file, and the script runs), instead of closing the window, while the file's code says "exit", what shows on the screen is: ... $l done logout [Process completed] ...and the window remains open. Does

问题 Referring to, executing management commands from code, Is their a way to call this command execution code from the django admin interface? I've a custom command to do some periodic update of database which has been scheduled as cron. The cron is working fine. I need to update the database manually from the admin interface whenever needed. 回答1: update: you can run any management command simply by calling the function call_command('compilemessages') from anywhere within your python code.

问题 I have the commands below that I use to make plots in R. The main text file is cross_correlation.csv. How can I put it in bash script so that when I launch it on the terminal, the R commands will perform their jobs and finish (like all other shell scripts). cross_correlation <- read.table(file.choose(), header=F, sep="\t") barplot(cross_correlation$V3) dev.copy(png,"cc.png",width=8,height=6,units="in",res=100) dev.off() hist(cross_correlation$V3, breaks=15, prob=T) dev.copy(png,"hist_cc.png"

问题 The documentation is very brief with this topic: ng eject ejects your app and output the proper webpack configuration and scripts What is the purpose of this command? 回答1: angular-cli is something magic, everything is done in a simple and automatic way. But sometimes, you may want to act on how the package is done, add a plugin or you are simply curious to see the Webpack configuration on which it is based. When running ng eject , you generate a webpack.config.json file. Looking at the file