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PostgreSQL: Drop PostgreSQL database through command line [closed]
...y to connect to your machine is via local sockets. I'm assuming you're on linux. If not this may need to be tweaked to something other than local / ident on that first line, to something like host ... yourusername.
Now you should be able to do:
psql postgres
drop database mydatabase;
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How do I change my Ruby version using RVM?
...mmand without me needing to first type source ~/.bash_profile -- i'm not a linux person, so this confuses me, but i'm glad this got it working. perhaps someone can clarify my confusion.
– TimDog
Feb 19 '12 at 16:53
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'echo' without newline in a shell script
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Just for the most popular linux Ubuntu & it's bash:
Check which shell are you using? Mostly below works, else see this:
echo $0
If above prints bash, then below will work:
printf "hello with no new line printed at end"
OR
echo -n "hello with no ...
How to check the extension of a filename in a bash script?
...The correct answer on how to take the extension available in a filename in linux is:
${filename##*\.}
Example of printing all file extensions in a directory
for fname in $(find . -maxdepth 1 -type f) # only regular file in the current dir
do echo ${fname##*\.} #print extensions
done
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Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
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well sometime - it won't work on linux then its good to install Xvfb with apt and run it on any screen like: Xvfb :1 and then set variable in build phase -- export DISPLAY=:1 --> this perfectly works.
– Pankaj Kumar Katiyar
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Change / Add syntax highlighting for a language in Sublime 2/3
...dard themes. While the JavaScript language definition isn't as thorough as Python's, for example, Neon still has a lot more diversity than some of the defaults like Monokai or Solarized.
I should note that I used @int3h's Better JavaScript language definition for this image instead of the one tha...
Chrome Uncaught Syntax Error: Unexpected Token ILLEGAL [duplicate]
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If you suspect you've got a case of this ailment, and you're on MacOS or Linux/Unix, the od command line tool can show you (albeit in a fairly ugly way) the numeric values in the characters of the source code file. Some IDEs and editors can show "funny" characters as well. Note that such character...
Matlab: Running an m-file from command-line
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On Linux you can do the same and you can actually send back to the shell a custom error code, like the following:
#!/bin/bash
matlab -nodisplay -nojvm -nosplash -nodesktop -r \
"try, run('/foo/bar/my_script.m'), catch, e...
What is the difference between bottom-up and top-down?
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@coder000001: for python examples, you could google search for python memoization decorator; some languages will let you write a macro or code which encapsulates the memoization pattern. The memoization pattern is nothing more than "rather tha...
Gradle does not find tools.jar
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On linux, you can also edit ~/.gradle/gradle.properties file, adding org.gradle.java.home=/usr/lib/jvm/java. Works for me on Fedora 24.
– samsong8610
Jul 27 '16 at 7:52
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