Recent questions tagged Linux

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linux - How can I run a function from a script in command line?

I have a script that has some functions. Can I run one of the function directly from command line? Something like this? myScript.sh func() See Question&Answers more detail:os...

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

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562 views

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linux - Optimize PDF files (with Ghostscript or other)

Is Ghostscript the best option if you want to optimize a PDF file and reduce the file size? I need to store ... ='.$file_new.' '.$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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894 views

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linux - How to run crontab job every week on Sunday

I'm trying to figure out how to run a crontab job every week on Sunday. I think the following should work, but ... following correct? 5 8 * * 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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907 views

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linux - How can I use xargs to copy files that have spaces and quotes in their names?

I'm trying to copy a bunch of files below a directory and a number of the files have spaces and single-quotes ... .3 (Leopard) with BSD xargs. See Question&Answers more detail:os...

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

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600 views

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linux - Docker command can't connect to Docker daemon

I want to make a move to Docker, so I've just started to mess around with it. I've installed Docker on a ... avail. What am I doing wrong 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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575 views

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linux - Tar a directory, but don't store full absolute paths in the archive

I have the following command in the part of a backup shell script: tar -cjf site1.bz2 /var/www/site1/ When ... how the option -C works? 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 - How to kill zombie process

I launched my program in the foreground (a daemon program), and then I killed it with kill -9, but I ... anyprogram 1163 root 0 Z [anyprogramd] See Question&Answers more detail:os...

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

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631 views

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linux - How to set proxy for wget?

I want to download something with wget using a proxy: HTTP Proxy: 127.0.0.1 Port: 8080 The proxy does not need ... password. How can I do this? 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 - How do I change bash history completion to complete what's already on the line?

I found a command a couple of months ago that made my bash history auto-complete on what's already on the ... . Does anybody know the 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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699 views

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linux - What does "rc" mean in dot files

In my home folder in Linux I have several config files that have "rc" as a file name extension: $ ls -a ~/| ... the "rc" in these names mean? See Question&Answers more detail:os...

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

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698 views

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linux - Remove a symlink to a directory

I have a symlink to an important directory. I want to get rid of that symlink, while keeping the directory ... the baby with the bathwater? See Question&Answers more detail:os...

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

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1.1k views

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linux - NGINX Redirect URL with Query Strings

I have this NGINX configuration: root /var/www/web; index index.php; server_name domain.com; access_log off; error_log ... } but it didnt work.. 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 - How to set memory limit for OOM Killer for chrome?

chrome invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=300 I'm getting the above error while testing ... chrome browser + Selenium. See Question&Answers more detail:os...

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

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809 views

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linux - How to check if a file has been opened by another application in C++?

I know, that there's the is_open() function in C++, but I want one program to check if a file hasn't ... that this is for a Linux application. See Question&Answers more detail:os...

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

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809 views

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linux - Bash Script - iterating over output of find

I have a bash script in which I need to iterate over each line of the ouput of the find command, but it ... baz What am I doing wrong 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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724 views

1 answer

linux - How do you filter out all unique lines in a file?

Is there a way to filter out all unique lines in a file via commandline tools without sorting the lines? I' ... the performance hit of sorting. See Question&Answers more detail:os...

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

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667 views

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linux - What is path //, how is it different from /

We know root directory is /, and according to posix, there is another directory // which differs from /. When you ... me. Anyone got an answer? See Question&Answers more detail:os...

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

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652 views

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linux - How is Stack memory allocated when using 'push' or 'sub' x86 instructions?

I have been browsing for a while and I am trying to understand how memory is allocated to the stack when doing ... I on the right track 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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1.1k views

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linux - kernel symbol marked with "T" in /proc/kallsyms is not exported

Symbol machine_power_off is marked with "T" in /proc/kallsyms: $ grep -w machine_power_off /proc/kallsyms ... but not in VirtualBox? See Question&Answers more detail:os...

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

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916 views

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linux time command microseconds or better accuracy

I wish to know the amount of time taken for execution of a program under linux in microseconds (or better ... other command for the same? 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

1 answer

linux - What is the difference between "./somescript.sh" and ". ./somescript.sh"

Today I was following some instructions to install a software in Linux. There was a script that needs to be ... be as elaborate as possible. See Question&Answers more detail:os...

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

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677 views

1 answer

linux - What's the point of eval/bash -c as opposed to just evaluating a variable?

Suppose you have the following command stored in a variable: COMMAND='echo hello' What's the difference between ... exactly the same thing? See Question&Answers more detail:os...

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

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756 views

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linux - what do these kernel panic errors mean?

I insmod a kernel module on ARM platform and I get a kernel panic which causes this three errors to be printed ... thing in a kernel module.? See Question&Answers more detail:os...

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

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563 views

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linux - get a browser rendered html+javascript

I need a comandline tool (or Javascript/PHP, but i think commandline is the one way) for render and get the ... the result for save in files? See Question&Answers more detail:os...

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

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738 views

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linux - SUID not working with shell script

I have created a small shell script with the following content: cat /usr/bin/checksuid.sh !/bin/bash echo " ... that why SUID is not working? See Question&Answers more detail:os...

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

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810 views

1 answer

linux - Allowing Ctrl-C to interrupt a python C-extension

I'm running some computationally heavy simulation in (home-made) C-based python extensions. Occasionally I get ... /a/33652496/423420 below) See Question&Answers more detail:os...

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

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1.4k views

1 answer

linux - How to fix "[SEVERE]: bind() failed: Cannot assign requested address (99)" while starting chromedriver

I downloaded the latest version of chromedriver in Centos 7 platform: https://chromedriver.storage.googleapis.com/index. ... can I solve this? See Question&Answers more detail:os...

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

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688 views

1 answer

linux - init function invocation of drivers compiled into kernel

In Linux if device drivers are built as loadable kernel modules, then upon inserting the device driver kernel ... their init function called ? See Question&Answers more detail:os...

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

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