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Linux/Unix command to determine if process is running?
...d or not:
#!/bin/bash
ps cax | grep httpd > /dev/null
if [ $? -eq 0 ]; then
echo "Process is running."
else
echo "Process is not running."
fi
Furthermore, if you would like the list of PIDs, you could easily grep for those as well:
ps cax | grep httpd | grep -o '^[ ]*[0-9]*'
Whose outp...
Casting vs using the 'as' keyword in the CLR
...field rather than a local variable. It's possible for the "if" to pass but then the cast to fail, if another thread changes the value of randomObject between the two.
If randomObject really should be an instance of TargetType, i.e. if it's not, that means there's a bug, then casting is the right sol...
Git merge reports “Already up-to-date” though there is a difference
... master
git reset --hard test
This brings it back to the 'test' level.
Then do:
git push --force origin master
in order to force changes back to the central repo.
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In Vim is there a way to delete without putting text in the register?
... At first I thought this command was not working properly. Then I realized I was using a "dead keys" version of the american keyboard. With this keyboard layout I have to type "<space>_d. The space is needed to actually type the ".
– Sebastián Grignoli
...
How slow are .NET exceptions?
...icant correctness issues, and if you've got significant correctness issues then performance isn't the biggest problem you face.
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How do I use the conditional operator (? :) in Ruby?
... required). It's an expression that works like:
if_this_is_a_true_value ? then_the_result_is_this : else_it_is_this
However, in Ruby, if is also an expression so: if a then b else c end === a ? b : c, except for precedence issues. Both are expressions.
Examples:
puts (if 1 then 2 else 3 end) # ...
When to Redis? When to MongoDB? [closed]
...
I love the approach of MongoDB being schemaless and then leaving it up to ORM authors to implement schemas for those who need them. Mongoose is a great ORM that introduces easy-to-use schemas if you need them :)
– Chev
Apr 28 '14 at 17:08...
In Vim, is there a way to paste text in the search line?
...
Copy it as normal, then do CtrlR" to paste. There are lots of other CtrlR shortcuts (e.g, a calculator, current filename, clipboard contents). Type :help c_<C-R> to see the full list.
...
How do I run a Java program from the command line on Windows?
...rk> java filenamehere
This runs the Java interpreter. You should then see your program
output.
If the system cannot find javac, check the set path command. If javac
runs but you get errors, check your Java text. If the program
compiles but you get an exception, check the spell...
Convert SQLITE SQL dump file to POSTGRESQL
...path/to/sqlite-dumpfile.sql
If you want the id column to "auto increment" then change its type from "int" to "serial" in the table creation line. PostgreSQL will then attach a sequence to that column so that INSERTs with NULL ids will be automatically assigned the next available value. PostgreSQL w...