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How to assign from a function which returns more than one value?
...eturningTwoValues()
If you only need the first or second component these all work too:
list[a] <- functionReturningTwoValues()
list[a, ] <- functionReturningTwoValues()
list[, b] <- functionReturningTwoValues()
(Of course, if you only needed one value then functionReturningTwoValues()[...
How to reset Jenkins security settings from the command line?
Is there a way to reset all (or just disable the security settings) from the command line without a user/password as I have managed to completely lock myself out of Jenkins ?
...
Get all object attributes in Python? [duplicate]
Is there a way to get all attributes/methods/fields/etc. of an object in Python?
4 Answers
...
Visual Studio immediate window command for Clear All
... you can use >cls, which is a predefined command alias to >Edit.ClearAll.
The MSDN article lists all predefined aliases and you can define your own, too. (For VS 2010 and earlier, custom aliases are described in a separate article, though.) Scanning through, there's a whole slew of them, some...
Delete all but the most recent X files in bash
...n a pretty standard UNIX environment with bash, to run a command to delete all but the most recent X files from a directory?
...
Python CSV error: line contains NULL byte
..., but not cause any other dramas. I also note that you have several files (all opened with 'rU' ??) but only one causing a problem.
If the csv module says that you have a "NULL" (silly message, should be "NUL") byte in your file, then you need to check out what is in your file. I would suggest that...
How can I use inverse or negative wildcards when pattern matching in a unix/linux shell?
...b, and turn it off with shopt -u extglob.
In your example, you would initially do:
$ shopt -s extglob
$ cp !(*Music*) /target_directory
The full available extended globbing operators are (excerpt from man bash):
If the extglob shell option is enabled using the shopt builtin, several exten...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...ween without having to open new SSH/telnet/etc, sessions
using nohup; this allows you to close and reopen your session without losing any background processes in the... process.
share
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improve thi...
Convert SQLITE SQL dump file to POSTGRESQL
...h a sequence to that column so that INSERTs with NULL ids will be automatically assigned the next available value. PostgreSQL will also not recognize AUTOINCREMENT commands, so these need to be removed.
You'll also want to check for datetime columns in the SQLite schema and change them to timestamp ...
How can I repeat a character in Bash?
...ay matter with large repeat counts).
Summary:
If your repeat count is small, say up to around 100, it's worth going with the Bash-only solutions, as the startup cost of external utilities matters, especially Perl's.
Pragmatically speaking, however, if you only need one instance of repeating ch...