Recent questions tagged Linux

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linux - Proper way to run a script using cron?

When running a script with cron, any executable called inside must have the full path. I discovered this trying ... advance for anyone helping. 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 - Qimage to cv::Mat convertion strange behaviour

I am trying to create an application where I am trying to integrate opencv and qt. I managed successfully to ... Linux system with gnome-3.4 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 bake credential into docker image for git?

This is actually a question following from my previous one. I am trying to use docker to host a personal ... in docker with version control? 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 - Concurrency of posix threads in multiprocessor machine

I have some doubts regarding concurrency of posix threads in multiprocessor machine. I have found similar questions in ... correct. 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 - `Error: could not find tiller` when running `helm version`

I have minikube and kubectl installed: $ minikube version minikube version: v1.4.0 commit: ... to initialise 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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linux - how to execute an local script in remote server with parameters

I have written an bash script foo.sh #!/usr/bin/env bash echo "starting the script"; I want to execute ... I pass parameters with my scripts? 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 `set -o errtrace` do in a shell script?

What is the effect of this statement in a shell script? set -o errtrace 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 - Git Permission denied (publickey,gssapi-keyex,gssapi-with-mic)?

Client: OS Ubuntu, git-version 2.7.4. Server: OS Centos , git-version 2.7.4. I have a ... no client:ssh_config enter image description here 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 - replace string in a file with value from another file

I have two files. One of them defines a set of number-value pairs as follows (fileA): 1 asm 2 assert 3 ... existing file B. Any ideas? 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 - Have 5 scripts running at any given time

I have a bash script (running under CentOS 6.4) that launches 90 different PHP scripts, ie. #!/bin/bash php ... Is there a way to achieve this? 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 - Return code when OS kills your process

I've wanted to test if with multiply processes I'm able to use more than 4GB of ram on 32bit O.S (mine: ... . ",my_pid); return(EXIT_SUCCESS); } 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 - Opencv error on python

no matter what "CV_FOURCC" I use I get this: OpenCV Error: Unsupported format or combination of formats (Gstreamer ... this makes a working AVI 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 - Accessing shell variable in a Perl program

I have this Perl script: #!/usr/bin/perl $var = `ls -l $ddd` ; print $var, " "; And ddd is a ... escaping $ddd in backticks in the Perl script. 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 - Mercurial Hg No changes found - can't Hg push out

Can someone pls advise why I'm getting NO CHANGES found at the end. Also, I'm getting an annoying message ... /GigaTest # 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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linux - Extending a script to loop over multiple files and generate output names

I have following script (named vid2gif.sh) to convert a video file to gif: #! /bin/bash ffmpeg -i $1 /tmp/ ... as *.gif. Thanks for your 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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linux - Copy differences between two files in unix

Firstly, which is the best and fastest unix command to get only the differences between two files ? I tried using diff ... - Glad to be here:) 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 is the best way to parse command line options in bash shell?

So I have the following script to sort command line options I got it from here: optstring=h unset options #deletes ... what I am doing wrong? 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 - Why do my results different following along the tiny asm example?

I'm reading this page https://www.muppetlabs.com/~breadbox/software/tiny/teensy.html This is one of the example ... 19.216294869 -0500 Birth: - 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 command run for symfony2 in windows 7

I am working on Ubuntu environment (LAMP).But when i install symfony2 on windows 7 starter operating system i ... help is appreciated! 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 - Writing to shared memory in Python is very slow

I use python.multiprocessing.sharedctypes.RawArray to share large numpy arrays between multiple processes. And I've noticed ... -mu and vmstat. 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 - merge files with bash by primary key

I have two files with with IP-Addresses as the primary key. File two has just a subset with different ... hostname from file2. Any ideas? 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 do I replace : characters with newline?

I looked at a very similar question but was unable to resolve the issue Replace comma with newline in sed I ... . Any help is appreciated. 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 - Combine file modified date and "grep" results through "find", in one line

We want to show each file's modified date and time when applying grep to selected files by the find command. The final ... : 7 :Τα σχ?λια σα? 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 - ffmpeg fix watermark size or percentage

i have some videos and i want to add watermark to them but problem is coz in every video "watermark size ... 1280x720 then watermark is so small 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 tell Qt to use different OpenSSL

I have linux with Qt 4:4.6.3-4+squeeze1 and openssl 0.9.8o-4squeeze14 There is problem with ... version of openssl Best Regards Marek 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 - Command substitution within sed expression

I'm having little problem with bash/sed. I need to be able to use command substitution within sed expression. I have ... s/cat/$(echo dog)/g" 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 - Is there a way to connect a shell to a pseudo tty?

If I have a (compiled) background process (on GNU/Linux) such as a daemon create a pseudo-tty for itself, ... your terminal (or visa versa). 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 - Monit bundle exec rails s

I have the following shell script that allows me to start my rails app, let's say it's called start-app.sh: #! ... new? i hope you get my point See Question&Answers more detail:os...

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

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