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Convert decimal to hexadecimal in UNIX shell script
... ... and bc is not available everywhere (at least not on my embedded Linux).
– Matthieu
Aug 17 '18 at 16:37
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How to format strings using printf() to get equal length in the output?
... may have.
I don't know if all implementations have the %n but Solaris and Linux do.
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How can I stop a running MySQL query?
I connect to mysql from my Linux shell. Every now and then I run a SELECT query that is too big. It prints and prints and I already know this is not what I meant. I would like to stop the query.
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unix diff side-to-side results?
... Just tried it on OSX and it does not work here. Maybe its for linux only.
– Nikola Petkanski
Jul 22 '16 at 12:01
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scp (secure copy) to ec2 instance without password
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I've used below command to copy from local linux Centos 7 to AWS EC2.
scp -i user_key.pem file.txt ec2-user@my.ec2.id.amazonaws.com:/home/ec2-user
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Unable to locate tools.jar
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If you are in Linux you can solve this by installing java on the system:
sudo apt-get install openjdk-7-jdk openjdk-7-jre
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Replace tabs with spaces in vim
... Awesome tip! Vim showed me a perfectly idented file while cat (linux cmd) showed irregular identation. I just changed the 2 spaces to 4 as I use in Vim set ts = 4.
– karlphillip
Nov 23 '11 at 12:20
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Gradle store on local file system
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On Mac, Linux and Windows i.e. on all 3 of the major platforms, Gradle stores dependencies at:
~/.gradle/caches/modules-2/files-2.1
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When should I use @classmethod and when def method(self)?
...atic method of java or C++. ( static method is a general term I guess ;) )
Python also has @staticmethod. and difference between classmethod and staticmethod is whether you can
access to class or static variable using argument or classname itself.
class TestMethod(object):
cls_var = 1
@clas...
differentiate null=True, blank=True in django
...: CharFields can get saved as NULL in the database (translating to None in Python) if you set null=True. The docs even say to avoid setting null=True because it allows two different kinds of "blanky" values. I just tested this behaviour with Django 1.8/MySQL 5.6
– Edward D'Souz...