Recent questions tagged Linux

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linux - Use different PHP version CLI executable for one command

So I have Gentoo box with three PHP versions installed (nevermind the reasons): /usr/bin/php -> /usr/lib64/ ... e. with no root permissions). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux execute command remotely

how do I execute command/script on a remote linux box? say I want to do service tomcat start on box b from box a. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - SVN Error: Can't convert string from native encoding to 'UTF-8'

I've got a post-commit hook script that performs a SVN update of a working copy when commits are made to the ... I get Teneriffa-S??d.jpg See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How to copy multiple files from a different directory using cp?

I want to copy multiple files from a specific directory once I am in another directory. To clarify I want to do ... , I'm using bash. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - How to find files modified in last x minutes (find -mmin does not work as expected)

I'm trying to find files modified in last x minutes, for example in the last hour. Many forums and ... use the find command correctly? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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695 views

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linux - Convert binary data to hexadecimal in a shell script

I want to convert binary data to hexadecimal, just that, no fancy formatting and all. hexdump seems too clever, ... machine (there are many). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - What does 'cd -' stand for?

In a bash shell script today I noticed the below command at the end of the script. I know what is cd but I ... I am unable to find its answer. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Bluez: advertise service / gatt server example?

Goal I am developping a simple device running Linux. It is BLE capable, and I am currently using bluez ... is accepting incoming connections? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Bash Pipe Handling

Does anyone know how bash handles sending data through pipes? cat file.txt | tail -20 Does this command ... there a more complicated mechanism? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux device driver - proc_create() example for kernel module

Can someone give me proc_create() example? Earlier they used create_proc_entry() in the kernel but now they are using proc_create(). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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667 views

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linux - Find and basename not playing nicely

I want to echo out the filename portion of a find on the linux commandline. I've tried to use the following: find ... 't do what it should do. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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569 views

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linux - How to enable Bash in Windows 10 developer preview?

I am using windows 10 developer preview Build 14295. From the Build conference I understood that we can enable bash ... the bash. Kindly help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

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linux - Is OSX a POSIX OS?

What is it that makes an OS a POSIX system? All versions of Linux are POSIX, right? What about OSX? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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linux - Using `find -perm` to find when a permission is not set

I want to find the non-readable files in my directory (eg the files with g-r). So I tried this: find . - ... -perm -g-r does anything useful. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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555 views

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linux - What's the meaning of a ! before a command in the shell?

What is the purpose of a shell command (part of a shell script) starting with an exclamation mark? Concrete example: ... not make sense to me. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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681 views

1 answer

linux - How set multiple env variables for a bash command

I am supposed to set the EC2_HOME and JAVA_HOME variables before running a command (ec2-describe-regions) How do I do that in one go? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

1 answer

linux - Hard time in understanding MODULE_DEVICE_TABLE(usb, id_table) usage

I have a hard time understanding the exact usage of MODULE_DEVICE_TABLE(usb, id_table) AFAIK this will generate the ... am I missing something? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

1 answer

linux - Hibernate + MySQL: How to set the encoding utf-8 for database and tables

My system runs on Linux Mandriva, RDBMS - MySQL 5. I need to have the database and tables created in ... ENGINE=MyISAM DEFAULT CHARSET=cp1251 | See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

1 answer

linux - How to change all occurrences of a word in all files in a directory

I was in the process of creating a User class where one of the methods was get_privileges();. After hours of ... this typo and code around it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - Deleting a folder from svn repository

I sometimes make mistakes with svn and have folders stuck in my repository. I want to remove these folders but I ... What do I need to do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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620 views

1 answer

linux - How do I capture all of my compiler's output to a file?

I'm building an opensource project from source (CPP) in Linux. This is the order: $CFLAGS="-g Wall" ... the output of these command executions. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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601 views

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linux - Installing R from CRAN Ubuntu repository: No Public Key Error

I am on R version 2.13 and would like to update to a newer version in order to use some packages that depend ... idea how to debug this error? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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661 views

1 answer

linux - No local gulp install found even after installing npm install -g gulp

I tried to install gulp by npm install -g gulp The output seems to be something like this. (i have skipped ... i am getting this error. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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624 views

1 answer

linux - Why is kernel mapped to the same address space as processes?

This is a question to elaborate on this one: Why is kernel said to be in process address space? This ... or Ubuntu) specific operating system? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

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linux - How do I use EPOLLHUP

Could you guys provide me a good sample code using EPOLLHUP for dead peer handling? I know that it is a signal ... in code..Thanks in advance.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

1 answer

linux - Output file lines from last to first in Bash

I want to display the last 10 lines of my log file, starting with the last line- like a normal log reader. I ... but I can't find this anywhere. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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803 views

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linux - Unix pipe into ls

I thought I understood *nix pipes until now... I have an executable called studio which symlinks to my install of ... 't I grokked about pipes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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794 views

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linux - nginx not listening to port 80

I've just installed a Ubuntu 12.04 server and nginx 1.2.7, removed default from sites-enabled and ... ; fastcgi_read_timeout 300; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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