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Passing variables in remote ssh command
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You can feed data right through the standard input of the ssh command and read that from the remote location.
In the following example,
an indexed array is filled (for convenience) with the names of the variables whose values you want to retrieve on the remote side.
For each of those variables, ...
versionCode vs versionName in Android Manifest
...sionCode attribute holds the significant version number used internally.
Reading that it's pretty clear that versionName is just something that's shown to the user, versionCode is what matters. Just keep increasing it and everything should be good.
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Find unused npm packages in package.json
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echo "--------------------------"
echo "Checking $1..."
while read PACKAGE
do
RES=$(cat $FILES | xargs -I {} egrep -i "(import|require).*['\"]$PACKAGE[\"']" '{}' | wc -l)
if [ $RES = 0 ]
then
echo -e "UNUSED\t\t $PACKAGE"
else
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What is the purpose of the reader monad?
The reader monad is so complex and seems to be useless. In an imperative language like Java or C++, there is no equivalent concept for the reader monad, if I am not mistaken.
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Find an element in a list of tuples
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Read up on List Comprehensions
[ (x,y) for x, y in a if x == 1 ]
Also read up up generator functions and the yield statement.
def filter_value( someList, value ):
for x, y in someList:
if x == value :
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How do I view an older version of an SVN file?
... than trying to view a diff of the file in the command line ( very hard to read ), is there any way I could get a copy of that file to review so I can study it to recover parts?
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Django auto_now and auto_now_add
...e this fields in admin (though, you won't be able to edit it), you can add readonly_fields to your admin class.
class SomeAdmin(ModelAdmin):
readonly_fields = ("created","modified",)
Well, this applies only to latest Django versions (I believe, 1.3 and above)
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Is there a C++ gdb GUI for Linux? [closed]
...debugging, CDT is able to do everything in your list with the exception of reading a core dump (it may support this, but I have never tried to use this feature). Also, my experience with debugging code using templates is limited, so I'm not sure what kind of experience CDT will provide in this rega...
.htaccess not working apache
...mple.
Third, if you want to ensure that a .htaccess file is in fact being read, put garbage in it.
An invalid line, such as "INVALID LINE HERE", in your .htaccess file, will result in a 500 Server Error when you point your browser at the directory containing that file. If it doesn't, then you don't...
Dump a mysql database to a plaintext (CSV) backup from the command line
...ysqldump since that outputs in a form that is only convenient for mysql to read. CSV seems more universal (one file per table is fine). But if there are advantages to mysqldump, I'm all ears. Also, I'd like something I can run from the command line (linux). If that's a mysql script, pointers to ...