Recent questions tagged linux

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linux - How to check if ssh-agent is already running in bash?

I have a sample sh script on my Linux environment, which basically run's the ssh-agent for the current shell, adds ... and add my keys into 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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linux - How do you read the mouse button state from /dev/input/mice?

How do you read the mouse button state from /dev/input/mice? I want to detect if the button is pressed down. 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 is the purpose of the "-i" and "-t" options for the "docker exec" command?

To be honest, I have always been confused about docker exec -it , docker exec -i and docker exec -t ... options for the docker exec command? 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 validate CSS on internal web pages?

I want to check internal web pages, so I cannot use the W3C validation service directly. I managed to run the ... local CSS on a Linux box? 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 - Unix 'alias' fails with 'awk' command

I'm creating an alias in Unix and have found that the following command fails.. alias logspace='find /apps/ ... command fails... Thanks, Shaun. See Question&Answers more detail:os...

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

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508 views

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linux - sed to insert on first match only

UPDATED: Using sed, how can I insert (NOT SUBSTITUTE) a new line on only the first match of keyword for each ... Keyword and other stuff Line 6 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 - Maintain file and folder permissions inside archives

I am packaging and distributing a program I made for Windows,Linux and Mac. I plan to put the files and ... to set the permissions themselves ? 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 - Signal handling in multi-threaded Python

This should be very simple and I'm very surprised that I haven't been able to find this questions answered already ... . What am I missing 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 - Maximum number of Bash arguments != max num cp arguments?

I have recently been copying and moving a large number of files (~400,000). I know that there are limitations ... , or am I missing something? 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 get time since file was last modified in seconds with bash?

I need to get the time in seconds since a file was last modified. ls -l doesn't show 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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467 views

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linux - Apache server keeps crashing, "caught SIGTERM, shutting down"

This just started happening three weeks or so ago. The content of my website hasn't changed, it's just a phpBB forum using ... 05:01:10 2009] [error] [client ::1] Directory inde...

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

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771 views

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linux - Crontab run every 15 minutes except at 3AM?

Is it possible to have a cronjob run every 15 minutes (over every hour etc..) except for at 3AM? I have another ... to run at the same time... 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 - Does gcc have any options to add version info in ELF binary file?

I mean whether gcc can insert some source code version infor into ELF binary as section or something similar. I ... with gcc option in Makefile. 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 - Setting LD_LIBRARY_PATH from inside Python

Is there a way to set specify during runtime where Python looks for shared libraries? I have fontforge.so ... -64.so.2 (0x00007f110022d000) 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 - C# plugin for Eclipse

Is there a good working plugin for C# in Eclipse? I'm using a Linux machine so I do not have ... highlighting and compiling would be nice. See Question&Answers more detail:os...

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

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781 views

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linux - How to escape colon (:) in $PATH on UNIX?

I need to parse the $PATH environment variable in my application. So I was wondering what escape characters would be ... I'm running CentOS 6. See Question&Answers more detail:os...

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

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682 views

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linux - How can I suppress error messages of a command?

How can I suppress error messages for a shell command? For example, if there are only jpg files in a directory, ... I want to hide all errors. See Question&Answers more detail:os...

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

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660 views

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linux - Need to intercept HID Keyboard events (and then block them)

I've got a RFID USB device that registers as a HID device (A USB Keyboard more or less). I'm looking ... 10 Device Status: 0x0000 (Bus Powered) See Question&Answers more detail:os...

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

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460 views

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linux - Setting creation or change timestamps

Using utimes, futimes, futimens, etc., it is possible to set the access and modification timestamps on a file. ... behind it not being so? See Question&Answers more detail:os...

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

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449 views

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linux - Bash script: Using "script" command from a bash script for logging a session

I am trying to use script command for logging a bash session. The script command is executed from withing a bash ... from a bash script? 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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896 views

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linux - /usr/bin/ld: cannot find -llapack

I am seeking help for installation in ubuntu 14.04. I am installing a package in my pc. They have their ... this issue. 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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460 views

1 answer

linux - When to check for EINTR and repeat the function call?

I am programming a user application for a embedded Linux system, and I am using the common functions such as ... and repeat the function call? See Question&Answers more detail:os...

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

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878 views

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linux - Virtualenv: workon command not found

I have installed virtualenv and the virtualwrapper via apt-get, I got to a point where I created a virtual ... appreciated. 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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581 views

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linux - Bash read/write file descriptors -- seek to start of file

I tried to use the read/write file descriptor in bash so that I could delete the file that the file descriptor ... what I want just using bash? See Question&Answers more detail:os...

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

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564 views

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linux - Use an IP-camera with webRTC

I want to use an IP camera with webrtc. However webrtc seems to support only webcams. So I try to convert the ... use an IP camera with webRTC? See Question&Answers more detail:os...

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

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457 views

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linux - What's the memory before 0x08048000 used for in 32 bit machine?

In Linux, I learned that every process stores data starting at 0x08048000 in 32 bit machine (and 0x00400000 in ... after the user stack. See Question&Answers more detail:os...

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

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849 views

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linux - How to read realtime microphone audio volume in python and ffmpeg or similar

I'm trying to read, in near-realtime, the volume coming from the audio of a USB microphone in Python. I have ... need to work on OSX & 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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513 views

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linux - Print the last line of a file, from the CLI

How to print just the last line of a 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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