Recent questions tagged linux

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linux - C++: External library in eclipse CDT

Now I am using eclipse CDT for my C/C++ Application, but there is problem when I link my external library, it ... library to c/c++ application. 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 old files using crontab

I use the following crontab record in order to daily backup my DB: 0 2 * * * MYSQL_PWD=password mysqldump -u ... then one month. Any thoughts? 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 - Makefile command substitution problem

rebar doesn't automatically rebuild files when given a different configuration file. So, I've tried to do it on ... normal What am I missing? See Question&Answers more detail:os...

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

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838 views

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linux - No output when running ltrace

As the title says, ltrace does not work properly on my system. It shows no output in most cases, like ... anyone able to reproduce the issue? 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 dlopen: can a library be "notified" when it is loaded?

Is there a way for a shared library to be "notified" when it is loaded? In other words, let's say I use ... the shared library (e.g. main?) See Question&Answers more detail:os...

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

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463 views

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linux - Kafka - Unable to send a message to a remote server using Java

I'm trying to create a Kafka cluster to send messages to a remote control. I have configured everything as described ... I couldn't find 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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552 views

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linux - `docker run` on a remote host

is it possible (using the docker command or the docker-py API directly) to start a container from a remote host ... it on my local machine. 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 - Possible values for `uname -m`

The uname(1) command-line utility has a -m option which prints the "machine hardware name". On Linux, this ... values for the "machine" field? 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 - Python TA-lib install error, how solve it?

i install TA-lib with below command, pip install TA-lib but got this error "command 'gcc' failed with exit ... in current linux-64 channels" See Question&Answers more detail:os...

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

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538 views

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linux - How to transfer the data of columns to rows (with awk)?

I have a file like this: n A B C D 1 01 02 01 01 2 02 02 01 01 and I want to transfer the columns by rows, so ... 01 02 B 02 02 C 01 01 D 01 01 See Question&Answers more detail:os...

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

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812 views

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linux - how to self dlopen an executable binary

I wrote a program to dlopen itself void hello() { printf("hello world "); } int main(int argc, char ** ... can not get it working with itself See Question&Answers more detail:os...

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

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532 views

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linux - How can I prepend a string to the beginning of each line in a file?

I have the following bash code which loops through a text file, line by line .. im trying to prefix ... rob@laptop:~/Desktop$ ouse.com,passw0rd 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 - Installing python modules on Ubuntu

I need to install some modules for python on Ubuntu Linux 12.04. I want pygame and livewires but I'm not ... I also want to install pygame. See Question&Answers more detail:os...

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

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540 views

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linux - How do you specify filenames within a zip when creating it on the command line from a pipe?

I'm trying to create a zip file from file contents which are being piped in, e.g. mysql [params and query] ... in data should be within the zip? See Question&Answers more detail:os...

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

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394 views

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linux - How can I launch a new process that is NOT a child of the original process?

(OSX 10.7) An application we use let us assign scripts to be called when certain activities occur within the ... 255r REG /Volumes/DATA/blahblah See Question&Answers more detail:os...

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

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525 views

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linux - Bash: How to tokenize a string variable?

If I have a string variable who's value is "john is 17 years old" how do I tokenize this using spaces as the delimeter? Would I use awk? See Question&Answers more detail:os...

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

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530 views

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linux - Create new file but add number if filename already exists in bash

I found similar questions but not in Linux/Bash I want my script to create a file with a given name (via ... somefile Created "somefile-2.ext" See Question&Answers more detail:os...

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

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540 views

1 answer

linux - How to open some ports on Ubuntu?

I know little about Linux.Today I create a VPN server on My ubuntu according to https://github.com/ ... window through telnet the port? See Question&Answers more detail:os...

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

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828 views

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linux - Encrypt a string using openssl command line

I have a 16 byte character that I would like to encrypt using openssl into a 16 byte encrypted string. ... commandline. 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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549 views

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linux - Read line by line in Bash script

I want to do the following: Read a file line by line and use the line as a parameter. FILE="cat test" echo ... $CMD, it just prints cat test. See Question&Answers more detail:os...

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

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580 views

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linux - Using Rsync include and exclude options to include directory and file by pattern

I'm having problems getting my rsync syntax right and I'm wondering if my scenario can actually be handled with rsync ... idea how to do 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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622 views

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linux - What are stalled-cycles-frontend and stalled-cycles-backend in 'perf stat' result?

Does anybody know what is the meaning of stalled-cycles-frontend and stalled-cycles-backend in perf stat ... .000790562 seconds time elapsed See Question&Answers more detail:os...

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

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693 views

1 answer

linux - How to see full absolute path of a symlink

When I'm using ls -la symlinkName or stat symlinkName not all the path is displayed (e.g ../../../ ... linux command that reveals the full path? See Question&Answers more detail:os...

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

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812 views

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linux - Add suffix to each line with shell script

I need to add some words at the end of each line of a text file. How can I do this with a Bash ... done line2 abcdefg done line3 abcdeft done See Question&Answers more detail:os...

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

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525 views

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linux - Find out if file has been modified within the last 2 minutes

In a bash script I want to check if a file has been changed within the last 2 minutes. I already found out ... date is older than two minutes? See Question&Answers more detail:os...

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

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588 views

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linux - How to set process group of a shell script

How to set process group of a shell script ? Also I want all the child process to be in the same process group ... similar to setpgid() in C. See Question&Answers more detail:os...

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

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450 views

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linux - C program shows %zu after conversion to Windows

I complied a linux program on windows via Mingw. However, the output of the program looks different on Windows ... ") :_end PAUSE ) See Question&Answers more detail:os...

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

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629 views

1 answer

linux - How to pass arguments with special characters to call shell script

Calling .sh(shell script) with the required parameters as below :- sh home/example.sh --context_param dbUserName= ... help will be appreciable. See Question&Answers more detail:os...

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

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