Recent questions tagged Linux

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linux - Converting PDF to CMYK (with identify recognizing CMYK)

I am having much trouble to get ImageMagick's identify to, well, identify a PDF as CMYK. Essentially, let's ... to get RGB images color managed. 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 - Using grep and sed to find and replace a string

I am using the following to search a directory recursively for specific string and replace it with another: grep ... unix commands like these). 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 avoid transparent_hugepage/defrag warning from mongodb?

I'm receiving the following warning from mongodb about THP 2015-03-06T21:01:15.526-0800 I CONTROL [initandlisten] ... can I avoid the warning? 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 - When should I use TCP_NODELAY and when TCP_CORK?

I understood that both of them disable Nagle's algorithm. When should/ shouldn't I use each one of them? 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 - Shell - How to find directory of some command?

I know that when you are on shell, the only commands that can be used are the ones that can be found on ... $ location lshw /usr/bin Anyone? See Question&Answers more detail:os...

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

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558 views

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linux - Get last dirname/filename in a file path argument in Bash

I'm trying to write a post-commit hook for SVN, which is hosted on our development server. My goal is ... and see the changes live immediately. 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 sort a file in-place

When we use sort file command, the file shows its contents in a sorted way what if I don't want to get any-kind of output but a sorted 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 - How do I remove a CLOSE_WAIT socket connection

I have written a small program that interacts with a server on a specific port. The program works fine, but ... way to flush these connections? 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 - Recursively remove files

Does anyone have a solution to remove those pesky ._ and .DS_Store files that one gets after moving files from a Mac ... /var/www/html/ 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 - How do I get cURL to not show the progress bar?

I'm trying to use cURL in a script and get it to not show the progress bar. I've tried the -s, -silent, ... http://google.com > temp.html does. See Question&Answers more detail:os...

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

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425 views

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linux - Make install, but not to default directories?

I want to run 'make install' so I have everything I need, but I'd like it to install the things in their own ... tools in the /usr/bin etc.? See Question&Answers more detail:os...

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

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473 views

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linux - Command to get time in milliseconds

Is there a shell command in Linux to get the time in milliseconds? See Question&Answers more detail:os...

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

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435 views

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linux - What's the difference between .so, .la and .a library files?

I know an .so file is a kind of dynamic library (lots of threads can share such libraries so there is no ... 23:25 openvpn-plugin-down-root.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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541 views

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linux - How do I read the source code of shell commands?

I would like to read the actual source code which the linux commands are written with. I've gained some experience ... m running on Ubuntu 12.04 See Question&Answers more detail:os...

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

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561 views

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linux - How to create a CPU spike with a bash command

I want to create a near 100% load on a Linux machine. It's quad core system and I want all cores going ... thinking some sort of infinite loop. See Question&Answers more detail:os...

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

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706 views

1 answer

linux - How can I copy the output of a command directly into my clipboard?

How can I pipe the output of a command into my clipboard and paste it back when using a terminal? For instance: cat file | clipboard See Question&Answers more detail:os...

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

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531 views

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linux - get string length in inline GNU Assembler

I am re-learning assembler which I used on very old MS-DOS machines!!! This is my understanding of what that ... register*/ ); return len; } See Question&Answers more detail:os...

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

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707 views

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linux - Just black screen after running Qemu

I have just installed QEMU and compiled linux kernel with ARM support but when I run below command qemu-system-arm ... and Entry points OK 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 - syntax error near unexpected token '(' in bash script when selecting files

Running this script bash ./cleanup.bash #!/bin/bash ## going to dir moving stuff rm -rf !(composer.json|. ... this correctly in the bash script? See Question&Answers more detail:os...

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

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645 views

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linux - How to make ncurses display UTF-8 chars correctly in C?

I have a program written in C using ncurses. It let user input and display it. It does not display correctly if ... -8 chars in C using ncurses? See Question&Answers more detail:os...

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

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465 views

1 answer

linux - plain C: opening a directory with fopen()

I have a program which opens a file and checks its length. FILE* fd = fopen(argv[1], "rb"); fseek(fd, 0, ... am using gcc 4.8.1 as compiler. See Question&Answers more detail:os...

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

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350 views

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linux - Problem usage memory in C

Please help :) OS : Linux Where in " sleep(1000);", at this time "top (display Linux tasks)" wrote me 7.7 %MEM ... "); sleep(1000); return 0; } See Question&Answers more detail:os...

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

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588 views

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linux - Executing command using "su -l" in SSH using Python

I use a friends server that allows only one user to be logged from SSH, so normally I just log in as ... system doesn't support that option. See Question&Answers more detail:os...

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

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543 views

1 answer

linux - How to sort strings that contain a common prefix and suffix numerically from Bash?

Here is a list of files: some.string_100_with_numbers.in-it.txt some.string_101_with_numbers.in-it.txt some. ... be clever and script? See Question&Answers more detail:os...

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

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487 views

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linux - Why can't capture SIGSEGV using signalfd?

My system is ubuntu 12.04. I modify the example from man 2 signalfd, and add sigaddset(&mask, SIGSEGV) in the ... Read unexpected signal "); } } See Question&Answers more detail:os...

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

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731 views

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linux - Complete C++ i18n gettext() "hello world" example

I am looking for a complete i18n gettext() hello world example. I have started a script based upon ... any references to LC_MESSAGES directory. See Question&Answers more detail:os...

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

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628 views

1 answer

linux - Linking error: DSO missing from command line

I am rather new to Linux (using Ubuntu 14.04 LTS 64bit), coming from Windows, and am attempting ... gist.github.com/wbolden/135033daae04ed0d8cf3 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

1 answer

linux - Disable and re-enable address space layout randomization only for myself

I would like to disable address space layout randomization (ASLR) on my system (Ubuntu Gnu/Linux 2.6.32-41- ... , and their meanings? 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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