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Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...pftrace-install 。
1、查看哪些程序（如head,tail）正在打开什么文件：
# bpftrace -e 'tracepoint:syscalls:sys_enter_open { printf("%s %s\n", comm, str(args->filename)); }'
Attaching 1 probe...
head /usr/lib/locale/locale-archive
head /usr/share/locale/locale.alias
head /us...
How do I run a Java program from the command line on Windows?
...
Let's say your file is in C:\mywork\
Run Command Prompt
C:\> cd \mywork
This makes C:\mywork the current directory.
C:\mywork> dir
This displays the directory contents. You should see
filenamehere.java among the files.
C:\mywork> set path=%path%;C:\Program Files\...
How can I upgrade specific packages using pip and a requirements file?
...also install the new versions of upgraded packages in current virtualenv).
cd into your project directory, and then run:
pip-upgrade
Advanced usage
If the requirements are placed in a non-standard location, send them as arguments:
pip-upgrade path/to/requirements.txt
If you already know what packa...
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
...nd i have installed mysql, django... however when i do python manage.py syncdb It gives me the same error that i have posted
– getitstarted
Mar 9 '13 at 23:13
...
How do I format a string using a dictionary in python-3.x?
...tring is more aligned to python3 approach.
– Jonatas CD
May 25 '18 at 12:00
2
Keep in mind that f...
How do I find out what keystore my JVM is using?
...
Mac OS X 10.12 with Java 1.8:
$JAVA_HOME/jre/lib/security
cd $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home
From there it's in:
./jre/lib/security
I have a cacerts keystore in there.
To specify this as a VM option:
-Djavax.net.ssl.trustStore=/Libr...
Sublime Text from Command Line
...blime Text 2\ in your PATH, and then run an administrator command prompt:
cd "C:\Program Files\Sublime Text 2\"
mklink sublime.exe sublime_text.exe
That will make a symbolic link with the new name. And now you can use it freely:
sublime hello.txt
Update: After having a chance to use this trick...
How to check if a file contains a specific string using Bash
...
##To check for a particular string in a file
cd PATH_TO_YOUR_DIRECTORY #Changing directory to your working directory
File=YOUR_FILENAME
if grep -q STRING_YOU_ARE_CHECKING_FOR "$File"; ##note the space after the string you are searching for
then
echo "Hooray!!It's avai...
How to add directory to classpath in an application run profile in IntelliJ IDEA?
... Some documentation on how -Xbootclasspath works: docs.oracle.com/cd/E15289_01/doc.40/e15062/optionx.htm#i1018570
– Lambart
May 6 '15 at 17:37
3
...
How to select only 1 row from oracle sql?
...UM.
ie.
SELECT user FROM Dual WHERE ROWNUM = 1
http://docs.oracle.com/cd/B19306_01/server.102/b14200/pseudocolumns009.htm
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