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Hexadecimal To Decimal in Shell Script
... in the shell or with an external program:
With bash:
$ echo $((16#FF))
255
with bc:
$ echo "ibase=16; FF" | bc
255
with perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c 'print(int("FF", 16))'
255
with ruby:
$ ruby -e 'p "FF".to...
Getting and removing the first character of a string
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15
There is also str_sub from the stringr package
x <- 'hello stackoverflow'
str_sub(x, 2) # or...
WebSocket with SSL
...eter Moskovits
3,72811 gold badge1717 silver badges1515 bronze badges
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Efficiently updating database using SQLAlchemy ORM
... on commit you don't have any stale data issues.
In the almost-released 0.5 series you could also use this method for updating:
session.query(Stuff).update({Stuff.foo: Stuff.foo + 1})
session.commit()
That will basically run the same SQL statement as the previous snippet, but also select the cha...
How do I install Maven with Yum?
...poses. Try,
wget http://mirror.olnevhost.net/pub/apache/maven/maven-3/3.0.5/binaries/apache-maven-3.0.5-bin.tar.gz
basically just go to the maven site. Find the version of maven you want. The file type and use the mirror for the wget statement above.
Afterwards the process is easy
Run the wget...
Git status - is there a way to show changes only in a specific directory?
...
answered Dec 14 '12 at 15:36
Sam DoidgeSam Doidge
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Regex lookahead for 'not followed by' in grep
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How to change the CHARACTER SET (and COLLATION) throughout a database?
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5 Answers
5
Active
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