大约有 19,024 项符合查询结果（耗时：0.0454秒） [XML]
Adding information to an exception?
...ppens at %s' % arg1)
bar('arg1')
Traceback (most recent call last):
File "test.py", line 13, in <module>
bar('arg1')
File "test.py", line 11, in bar
raise type(e)(e.message + ' happens at %s' % arg1)
IOError: Stuff happens at arg1
Update 1
Here's a slight modification that ...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...
The /sys filesystem should contain plenty information for your quest. My system (2.6.32-40-generic #87-Ubuntu) suggests:
/sys/class/tty
Which gives you descriptions of all TTY devices known to the system. A trimmed down example:
#...
How to detect if my shell script is running through a pipe?
...ped to cat.
The -t flag is described in man pages as
-t fd True if file descriptor fd is open and refers to a terminal.
... where fd can be one of the usual file descriptor assignments:
0: stdin
1: stdout
2: stderr
...
Execute another jar in a Java program
...r" parameter and it doesn't work. With only one, we only need to put the 3 files .jar in the same place
– Duc Tran
Apr 17 '12 at 16:06
...
How to add NERDTree to your .vimrc
... the answer you're looking for is to add the line below into your ~/.vimrc file. It tells Vim that you want to setup a command to run when Vim starts, but since it depends on various plugins to be loaded, you don't want to run it until all initialization is finished:
autocmd VimEnter * NERDTree
...
What is the difference between client-side and server-side programming?
...cript type="text/javascript">
var foo = 'bar';
<?php
file_put_contents('foo.txt', ' + foo + ');
?>
var baz = <?php echo 42; ?>;
alert(baz);
</script>
Step 1, PHP executes all code between <?php ?> tags. The result is this:
<script type="t...
Migration: Cannot add foreign key constraint
...Migrations get executed in the order they were created as indicated by the file name generated after running migrate:make. E.g. 2014_05_10_165709_create_student_table.php.
The solution was to rename the file with the foreign key to an earlier time than the file with the primary key as recommended h...
e.printStackTrace equivalent in python
... error 1294 Something awful happened!
Traceback (most recent call last):
File "b.py", line 22, in f
g()
File "b.py", line 14, in g
1/0
ZeroDivisionError: integer division or modulo by zero
(From http://blog.tplus1.com/index.php/2007/09/28/the-python-logging-module-is-much-better-than-p...
Apache: client denied by server configuration
...espectively. Strange... I guess I need to compare each server's httpd.conf files to see if there is a config difference there...
– Darragh Enright
Jul 23 '14 at 1:22
...
Is Tomcat running?
...
Why grep ps, when the pid has been written to the $CATALINA_PID file?
I have a cron'd checker script which sends out an email when tomcat is down:
kill -0 `cat $CATALINA_PID` > /dev/null 2>&1
if [ $? -gt 0 ]
then
echo "Check tomcat" | mailx -s "Tomcat not running" support@...