Recent questions tagged linux

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linux - How to print third column to last column?

I'm trying to remove the first two columns (of which I'm not interested in) from a DbgView log file. I ... line has variable number of columns. 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 - A way to determine a process's "real" memory usage, i.e. private dirty RSS?

Tools like 'ps' and 'top' report various kinds of memory usages, such as the VM size and the Resident Set ... interested in FreeBSD and OS X. 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 create a hex dump of file containing only the hex characters without spaces in bash?

How do I create an unmodified hex dump of a binary file in Linux using bash? The od and hexdump commands ... spaces or newlines in the output? 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 - Why Maven uses JDK 1.6 but my java -version is 1.7

I'm new to maven, and also to MacOS. I have setup maven in my terminal, and when getting the version settings ... arch: "x86_64", family: "mac" 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 status of POSIX asynchronous I/O (AIO)?

There are pages scattered around the web that describe POSIX AIO facilities in varying amounts of detail. None of ... have made me curious. 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 update a Python package?

I'm running Ubuntu 9:10 and a package called M2Crypto is installed (version is 0.19.1). I need to download ... system before installing 0.20.2? 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 change the default GCC compiler in Ubuntu?

I have installed gcc-3.3/g++-3.3 on ubuntu 11.04 which already has gcc/g++-4.4. So in my ... the system instead of changing all make 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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656 views

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linux - How to use sed to remove the last n lines of a file

I want to remove some n lines from the end of a file. Can this be done using sed? For example, to ... that using sed or some other method. 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 reset Jenkins security settings from the command line?

Is there a way to reset all (or just disable the security settings) from the command line without a user/ ... lock myself out of Jenkins? 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 find all of the distinct file extensions in a folder hierarchy?

On a Linux machine I would like to traverse a folder hierarchy and get a list of all of the distinct file ... to achieve this from a shell? 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 full path of a file?

Is there an easy way I can print the full path of file.txt ? file.txt = /nfs/an/disks/jj/home/dir/file. ... /nfs/an/disks/jj/home/dir/file.txt 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 - Run several jobs parallelly and Efficiently

OS: Cent-OS I have some 30,000 jobs(or Scripts) to run. Each job takes 3-5 Min. I have 48 CPUs(nproc ... to handle this kind of jobs next 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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linux - Where to get iostream.h

I'm trying to make something in Linux, but it complains that it can't find iostream.h. What do I need to install to get this 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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402 views

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linux - equivalent date from GNU to solaris

In GNU with the command date I can do it: date -d "+4 day" datei=20130101 i=5 date -d "$datei +$i ... do it in Solaris? with the date 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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475 views

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linux - SONAR - Measure Code Coverage using Cobertura

I am using sonar to measure code quality. One thing that I do not know is the steps to measure code coverage ... LINUX. Thanks for the help! See Question&Answers more detail:os...

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

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727 views

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linux - How to single step ARM assembly in GDB on QEMU?

I'm trying to learn about ARM assembler programming using the GNU assembler. I've setup my PC with QEmu ... SIGSEGV, Segmentation fault. (gdb) See Question&Answers more detail:os...

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

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357 views

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linux - Finding contents of one file in another file

I'm using the following shell script to find the contents of one file into another: #!/bin/ksh file="/home/ ... anything wrong with what I do? 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 - Set chrome browser binary through chromedriver in Python

I used Selenium with Python Chrome webdriver. In my code I used: driver = webdriver.Chrome(executable_path = ... an example for Python? See Question&Answers more detail:os...

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

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401 views

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linux - Detecting 64bit compile in C

is there a C macro or some kind of way that i can check if my c program was compiled as 64bit or 32bit at ... if the OS is capable of 64bit? See Question&Answers more detail:os...

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

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422 views

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linux - GROUP BY/SUM from shell

I have a large file containing data like this: a 23 b 8 a 22 b 1 I want to be able to get this: ... good direct command-line way of doing 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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503 views

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linux - SIGKILL signal Handler

I have a requirement to write to a log file on reception of any terminate command like SIGTERM AND SIGKILL. ... can handle the SIGKILL 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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776 views

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linux - Run interactive Bash with popen and a dedicated TTY Python

I need to run an interactive Bash instance in a separated process in Python with it's own dedicated TTY (I ... what could be the problem 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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467 views

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linux - Java Refuses to Start - Could not reserve enough space for object heap

Background We have a pool of aproximately 20 linux blades. Some are running Suse, some are running Redhat. ... would be greatly appreciated. See Question&Answers more detail:os...

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

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636 views

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linux - How to include all objects of an archive in a shared object?

When compiling our project, we create several archives (static libraries), say liby.a and libz.a that each ... idea where this comes from? 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 - What is the meaning of a double dollar sign in bash/Makefile?

When inserting a shell script inside a Makefile we have (?) to use a double dollar sign ($$) to make reference ... 4 ; do echo $$number ; done See Question&Answers more detail:os...

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

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440 views

1 answer

linux - How to compile my own glibc C standard library from source and use it?

I am trying to compile my own glibc. I have a directory glibc, which contain the glibc source code I downloaded ... How do I solve this problem? See Question&Answers more detail:os...

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

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536 views

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linux - Monitor Directory for Changes

Much like a similar SO question, I am trying to monitor a directory on a Linux box for the addition of new ... the best way to implement 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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389 views

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linux - Set environment variables in C

Is there a way to set environment variables in Linux using C? I tried setenv() and putenv(), but they don't seem to be working for me. See Question&Answers more detail:os...

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

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