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Remove file extension from a file name string
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Watch out for files with no extension, like foo/bar.cat/cheese!
– Cameron
Jan 24 '14 at 14:54
S...
correct way to define class variables in Python [duplicate]
...ample explains the difference between the styles:
james@bodacious-wired:~$cat test.py
#!/usr/bin/env python
class MyClass:
element1 = "Hello"
def __init__(self):
self.element2 = "World"
obj = MyClass()
print dir(MyClass)
print "--"
print dir(obj)
print "--"
print obj.element1
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Pip install Matplotlib error with virtualenv
...dev
sudo apt-get install libfreetype6-dev
Ubuntu https://apps.ubuntu.com/cat/applications/libpng12-0/
or using following command
sudo apt-get install libpng12-0
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How to modify a global variable within a function in bash?
...then add a variable? You definitively do not want to alter all the 1000 locations where a call to d is involved.
So leave the x away, so we can write:
_passback() { while [ 0 -lt $# ]; do printf '%q=%q;' "$1" "${!1}"; shift; done; }
d() { let x++; output=$(date +%Y%m%d-%H%M%S); _passback output ...
Execute bash script from URL
...m/myscript.txt)
It may be clearer if you look at the output of echo <(cat /dev/null)
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Python base64 data decode
...nted out an even simpler solution: base64 -d
So you can use it like this:
cat "FILE WITH STRING" | base64 -d > OUTPUTFILE
#Or You Can Do This
echo "STRING" | base64 -d > OUTPUTFILE
That will save the decoded string to outputfile and then attempt to identify file-type using either the file t...
How to correct TypeError: Unicode-objects must be encoded before hashing?
... answered Sep 28 '11 at 15:09
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Multiplication on command line terminal
... assigning via k. I certainly remember the default precision being 0 (truncation to integer). Am I mis-remembering, or is it simply that newer implementations have changed behavior?
– William Pursell
Jun 15 '12 at 1:32
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...行。
12. 一个验证passwd文件有效性的例子
$ cat /etc/passwd | awk -F: '\ NF != 7{\ printf("line %d,does not have 7 fields:%s\n",NR,$0)}\ $1 !~ /[A-Za-z0-9]/{printf("line %d,non alpha and numeric user id:%d: %s\n,NR,$0)}\ $2 == "*" {printf("line %d, no password: %s\n",NR...
using awk with column value conditions
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please try this
echo $VAR | grep ClNonZ | awk '{print $3}';
or
echo cat filename | grep ClNonZ | awk '{print $3}';
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