Recent questions tagged Linux

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1) Is it possible to access a physical address which is not defined in /proc/iomem? 2) If the physical ... not been utilized/initialized yet? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Which JDK's distributions can run `javac -source 1.6 -target 1.5`?

NOTE: Please do not comment on all the perils of cross-compiling. Thank you. I have a situation where we need ... a bug report for this issue. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - get parent directory of a file in bash

How do I get a parent directory for a file? I want it to be safe on all kind of names: . .. path ... ] bash filepath to parent directory of file See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - PHP session timeout callback?

I'm running a PHP + APACHE + CENTOS Linux combination. I have implemented a login & logout on the website. My ... use of Apache/Linux, right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Mismatch between sys.executable and sys.version in Python

There are two Python interpreters installed: [user@localhost ~]$ /usr/bin/python -V && /usr/local/bin/python ... , yet executes the same binary See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - No module named 'matplotlib.pyplot'; 'matplotlib' is not a package

Have found a similar issue, however haven't found proper solution. Here's a code: import matplotlib.pyplot as plt ... itself) - haven't risked. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Debugging shared libraries with gdbserver

I am using gdbserver on target and CodeSourcery IDE. My hardware is a gumstix with a omap3530. I can step through ... ="0",thread-group="i1" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - python: Interplay between lib/site-packages/site.py and lib/site.py

Due to a specific problem which I managed to solve, I spent most of today figuring out how site.py(s) work. ... > Output of python -vv is here See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Python: How to get number of mili seconds per jiffy

I'd like to know the HZ of the system, i.e. how many mili seconds is one jiffy from Python code. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How can I make bash treat undefined variables as errors?

Please note: there are many questions about how to test a single shell variable on this site. This question ... way to flag undefined variables? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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519 views

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linux - Run a persistent process via ssh

I'm trying to start a test server via ssh but it always dies once i disconnect from ssh. Is there a way to ... upon the end of my ssh session? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How to save the output of this awk command to file?

I wanna save this command to another text: awk '{print $2}' it extract's from text. now i wanna save output too another text. thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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454 views

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linux - Need to get the dates of all mondays in a year

I need to sort data on a weekly base and all i have are dates in a logfile. Therefore to sort out data per ... Isn't there a more efficient way? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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633 views

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linux - How to make python window run as "Always On Top"?

I am running a little program in python that launches a small window that needs to stay on top of all the other ... .demon.co.uk for his help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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474 views

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linux - Get subprocess id in Java

I'm creating subprocesses in this way: String command = new String("some_program"); Process p = Runtime.getRuntime(). ... I'm working on Linux. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - What character sequence should I not allow in a filename?

I found out after testing that linux allows any character in a file name except for / and null (). So what ... dash is a legal window character) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - /usr/bin/ld: skipping incompatible foo.so when searching for foo

I am using Ubuntu 13.10 64bit and I am getting the following errors while compiling the python wrappers of ... work on 64 bit architecture? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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linux - Changing environment variable of a running process

I have a script that exports a environment variable and starts some subscripts. export LOGLEVEL="1" /home/myuser/bin ... but that`s not working. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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710 views

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linux - Difference between bash pid and $$

I'm a bash scripting beginner, and I have a "homework" to do. I figured most of the stuff out but there is ... $BASHPID doesn't work on a mac? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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711 views

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linux - How can I add quotation marks to fields in a CSV file?

I've got a CSV file like Brand,Type,Color Porsche,Sport,Red BMW,Coupe,Blue I'd like to include quotation ... will implement it in a cronjob. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

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linux - redirecting output to a file in C

i coded a basic shell in C for executing basic commands it'll execute commands ls, ls -al , ls -al | more ... tee command. thanks in advance... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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502 views

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linux - How to specify base addresses for sections when linking or alternatively how to rebase a section after linking?

Symbols can be linked at certain addresses with defsym as illustrated here. My question is whether the same can ... an image to explain better. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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615 views

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linux - URL encoding a string in bash script

I am writing a bash script in where I am trying to submit a post variable, however wget is treating it ... $MESSAGE without php executing it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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844 views

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linux - Can't run Sonar Server caused by Elasticsearch cannot running as root

I'm trying to install SonarQube : i ve followed those steps : Setting up SOnarQube Tuto : here To summarize it : ... . 6 more Any suggestions ?? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How does the gettimeofday syscall wor?k?

gettimeofday is a syscall of x86-86 according to this page(just search gettimeofday in the box): int gettimeofday ... explain how it works? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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865 views

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linux - why do I get "Suspended (tty output)" in one terminal but not in others?

Apparently I've done something strange/wrong in a tcsh shell, and now whenever I start an application in the background ... , and tcsh 6.17.00. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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860 views

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linux - Can't get private key with openssl (no start line:pem_lib.c:703:Expecting: ANY PRIVATE KEY)

I have a .key file, when I do openssl rsa -text -in file.key I get unable to load Private Key ... the private key and its certificate? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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998 views

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linux - Read and Write on serial port in Ubuntu with C/C++ and LibSerial

I'm using LibSerial on Ubuntu to read and write data on serial port. At the moment, I'm able to write and ... ::endl ; return EXIT_SUCCESS ; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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