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How to file split at a line number [closed]
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file_name=test.log
# set first K lines:
K=1000
# line count (N):
N=$(wc -l < $file_name)
# length of the bottom file:
L=$(( $N - $K ))
# create the top of file:
head -n $K $file_name > top_$file_name
# create bottom of fil...
How to create a link to a directory [closed]
How to create a link xxx to /home/jake/doc/test/2000/something/ ?
2 Answers
2
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How do I write a Python dictionary to a csv file? [duplicate]
...ceptions occur.
Example with these changes made:
import csv
my_dict = {"test": 1, "testing": 2}
with open('mycsvfile.csv', 'wb') as f: # Just use 'w' mode in 3.x
w = csv.DictWriter(f, my_dict.keys())
w.writeheader()
w.writerow(my_dict)
Which produces:
test,testing
1,2
...
How to create user for a db in postgresql? [closed]
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From CLI:
$ su - postgres
$ psql template1
template1=# CREATE USER tester WITH PASSWORD 'test_password';
template1=# GRANT ALL PRIVILEGES ON DATABASE "test_database" to tester;
template1=# \q
PHP (as tested on localhost, it works as expected):
$connString = 'port=5432 dbname=test_databa...
Testing for empty or nil-value string [duplicate]
I'm trying to set a variable conditionally in Ruby. I need to set it if the variable is nil or empty (0 length string). I've come up with the following:
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JavaScript .replace only replaces first Match [duplicate]
...
You need a /g on there, like this:
var textTitle = "this is a test";
var result = textTitle.replace(/ /g, '%20');
console.log(result);
You can play with it here, the default .replace() behavior is to replace only the first match, the /g modifier (global) tells it to replace a...
How to gracefully handle the SIGKILL signal in Java
... event, such as user logoff or system shutdown.
I tried the following test program on OSX 10.6.3 and on kill -9 it did NOT run the shutdown hook, as expected. On a kill -15 it DOES run the shutdown hook every time.
public class TestShutdownHook
{
public static void main(String[] args) thro...
Can I force a page break in HTML printing?
... things in CSS, this doesn't always work consistently across the board, so test the living daylights out of it, lest you have angry users wondering why your site prints piles of extra blank pages!
– Zoe
Nov 2 '09 at 22:17
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How do I find all files containing specific text on Linux?
...rience, the -i makes it slow down a lot, so don't use it if not necessary. Test it in a certain dir and then generalise. It should be completed within few minutes. I think a regular expression would make it slower. But my comments are based on suppositions, I suggest you to test it with time in fron...