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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...ehow:
strace -ewrite -p $PID 2>&1 | grep "write(1"
shows only descriptor 1 calls. 2>&1 is to redirect STDERR to STDOUT, as strace writes to STDERR by default.
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How do I perform a Perl substitution on a string while keeping the original?
...
I hate foo and bar .. who dreamed up these non descriptive terms in programming anyway?
my $oldstring = "replace donotreplace replace donotreplace replace donotreplace";
my $newstring = $oldstring;
$newstring =~ s/replace/newword/g; # inplace replacement
print $newstring...
Name node is in safe mode. Not able to leave
...e hadoop dfsadmin command, it gave me this: ______ DEPRECATED: Use of this script to execute hdfs command is deprecated. Instead use the hdfs command for it. Safe mode is OFF ______ ... but still ran. Seems the suggestion by @user3316017 below is the recommended syntax.
– CJBS...
Using variables inside a bash heredoc
...a piece of literal text.
A common task is to combine local variables with script which should be evaluated by a different shell, programming language, or remote host.
local=$(uname)
ssh -t remote <<:
echo "$local is the value from the host which ran the ssh command"
# Prevent here do...
Can I add jars to maven 2 build classpath without installing them?
...t;file://${project.basedir}/repo</url>
</repository>
A helper script
Since executing installation command for each lib is kinda annoying and definitely error prone, I've created a utility script which automatically installs all the jars from a lib folder to a project repository, while a...
How do I install Python OpenCV through Conda?
...s like this...
Before:
C:\Users\Johnny\Anaconda;C:\Users\Johnny\Anaconda\Scripts
After:
C:\Users\Johnny\Anaconda;C:\Users\Johnny\Anaconda\Scripts;%OPENCV_DIR%\bin
This is it we are done! FFMPEG is ready to be used!
Test to confirm
We need to test whether we can now do these in Anaconda (via...
Replace new lines with a comma delimiter with Notepad++?
...u'll have to perform similar task in the future, you might want to write a script for it. Easy way out is probably just go to the Macro Tab and select run the macro multiple times. It will be done in seconds.
– viclim
Apr 1 '13 at 12:23
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How to get value of selected radio button?
...could do something like this:
var form = document.getElementById("test");
alert(form.elements["test"].value);
The JSFiddle to prove it: http://jsfiddle.net/vjop5xtq/
Please note this was implemented in Firefox 33 (All other major browser seems to support it). Older browsers will require a polfyi...
How do you set your pythonpath in an already-created virtualenv?
...usly mentioned line, and add the following line to your bin/postdeactivate script.
export PYTHONPATH="$OLD_PYTHONPATH"
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Recursively remove files
... you will need to take it on the end (i.e. -rfi`). Thank god for my backup script.
– ryanjdillon
Apr 24 '13 at 19:11
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