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Error in : object of type 'closure' is not subsettable
... defined url in your prior R session, but forgot to copy that code to your script.
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node.js execute system command synchronously
... it gets things done. Install the library.
npm install node-ffi
Example script:
var FFI = require("node-ffi");
var libc = new FFI.Library(null, {
"system": ["int32", ["string"]]
});
var run = libc.system;
run("echo $USER");
[EDIT Jun 2012: How to get STDOUT]
var lib = ffi.Library(null, {
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Redirect Windows cmd stdout and stderr to a single file
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To add the stdout and stderr to the general logfile of a script:
dir >> a.txt 2>&1
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Copy file(s) from one project to another using post build event…VS2010
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xcopy "$(TargetDir)*$(TargetExt)" "$(SolutionDir)\Scripts\MigrationScripts\Library\" /F /R /Y /I
/F – Displays full source & target file names
/R – This will overwrite read-only files
/Y – Suppresses prompting to overwrite an existing file(s)
/I – Assumes th...
How to export and import environment variables in windows?
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My favorite method for doing this is to write it out as a batch script to combine both user variables and system variables into a single backup file like so, create an environment-backup.bat file and put in it:
@echo off
:: RegEdit can only export into a single file at a time, so create ...
How can I remove a trailing newline?
...ommand line, you'll want "string = string.strip()"
– Script Kitty
Apr 12 '16 at 1:06
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grep a file, but show several surrounding lines?
...e are not meant to be used together. It is cleaner to other readers of the script if you choose -A or -B or -C over -9.
– Eric Aldinger
Jun 7 '19 at 17:01
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Multiple commands in an alias for bash
...will not even be attempted unless the first one is successful. A better description of short-circuit evaluation is described in this SO question.
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nvm keeps “forgetting” node in new terminal session
...n't somehow changing your PATH to something else after sourcing the nvm.sh script.
In my case, nvm.sh was being called in .bashrc but then the PATH variable was getting updated in .bash_profile which caused my session to find the system node before the nvm node.
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How can I get enum possible values in a MySQL database?
...can query INFORMATION_SCHEMA and parse them out of the query result with a scripting language, but that's unnecessarily complicated. In fact, I don't know of any elegant, purely SQL way to extract the member list of an ENUM column.
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