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Printing the last column of a line in a file
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Using Perl
$ cat rayne.txt
A1 123 456
B1 234 567
C1 345 678
A1 098 766
B1 987 6545
C1 876 5434
$ perl -lane ' /A1/ and $x=$F[2] ; END { print "$x" } ' rayne.txt
766
$
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Java: parse int value from a char
...n be converted into int(0 to 9), e.g., '5'-'0' gives int 5.
String str = "123";
int a=str.charAt(1)-'0';
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How can I import a database with MySQL from terminal?
...ple:
mysql -u root -p wp_users < wp_users.sql
mysql -u root -pPassword123 wp_users < wp_users.sql
See also:
4.5.1.5. Executing SQL Statements from a Text File
Note: If you are on windows then you will have to cd (change directory) to your MySQL/bin directory inside the CMD before exec...
Regex, every non-alphanumeric character except white space or colon
...
Try this:
[^a-zA-Z0-9 :]
JavaScript example:
"!@#$%* ABC def:123".replace(/[^a-zA-Z0-9 :]/g, ".")
See a online example:
http://jsfiddle.net/vhMy8/
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Changing column names of a data frame
...k it was asked for data.frame, not data.table
– Helix123
Apr 16 '15 at 19:15
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Printing leading 0's in C?
...intf allows various formatting options.
ex:
printf("leading zeros %05d", 123);
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How to replace all dots in a string using JavaScript
...our case :). Thanks for providing the link!
– testing123
Sep 28 '12 at 4:41
3
If you use RegExp, ...
What optimizations can GHC be expected to perform reliably?
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112
+150
This G...
How to get JQuery.trigger('click'); to initiate a mouse click
... you saved my day $('#asd')[0].click();
– waza123
May 31 '16 at 22:44
Used this to click the next tab on jQuery...
ERROR 1130 (HY000): Host '' is not allowed to connect to this MySQL server [duplicate]
...>use mysql
mysql>GRANT ALL ON *.* to root@'%' IDENTIFIED BY 'redhat@123';
mysql>FLUSH PRIVILEGES;
mysql> SELECT host FROM mysql.user WHERE User = 'root';
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