Recent questions tagged linux

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

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

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

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linux - How to wait for server restart using Ansible?

I'm trying to restart the server and then wait, using this: - name: Restart server shell: reboot - name ... to example.com. Connection closed 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 - tcp_tw_reuse vs tcp_tw_recycle : Which to use (or both)?

I have a website and application which use a significant number of connections. It normally has about 3,000 ... of them is an 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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linux - Randomly Pick Lines From a File Without Slurping It With Unix

I have a 10^7 lines file, in which I want to choose 1/100 of lines randomly from the file. This is the AWK code I ... == c/100 ) break } }' 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 - Ubuntu - Run command on start-up with "sudo"

I would like to run a sudo command when Ubuntu starts up (before anyone logs in): sudo searchd How would 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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linux - Count occurrences of a char in plain text file

Is there any way under linux/terminal to count, how many times the char f occurs in a plain text 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 - Create zip file and ignore directory structure

I need to create a zip file using this command: zip /dir/to/file/newZip /data/to/zip/data.txt This works, but ... the man page or a Google hunt. 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 - Use grep to find content in files and move them if they match

I'm using grep to generate a list of files I need to move: grep -L -r 'Subject: [SPAM]' . How ... command and move the files somewhere else? See Question&Answers more detail:os...

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

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808 views

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linux - Get final URL after curl is redirected

I need to get the final URL after a page redirect preferably with curl or wget. For example http://google.com ... in tools? (command line only) 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 happens when you run a program?

I would like to collect here what happens when you run an executable on Windows, Linux and OSX. In particular, I ... and OSX it would be great. 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 list (ls) the 5 last modified files in a directory?

I know ls -t will list all files by modified time. But how can I limit these results to only the last n 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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619 views

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linux - How do I connect to a terminal to a serial-to-USB device on Ubuntu 10.10 (Maverick Meerkat)?

I am trying to connect minicom to a serial device that is connected via a USB-to-serial adapter. This ... converter now attached to ttyUSB0 See Question&Answers more detail:os...

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

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585 views

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linux - The Concept of 'Hold space' and 'Pattern space' in sed

I'm confused by the two concepts in sed: hold space and pattern space. Can someone help explain them? Here' ... six commands really confuse 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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434 views

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linux - What is Intel microcode?

From what I've read it's used to fix bugs in the CPU without modifying the BIOS. From my basic knowledge of ... , and what uses it would have. 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 - Is there a way to make mv create the directory to be moved to if it doesn't exist?

So, if I'm in my home directory and I want to move foo.c to ~/bar/baz/foo.c , but those directories don' ... to see if anyone had a better idea. See Question&Answers more detail:os...

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

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497 views

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linux - How do I check the operating system in Python?

I want to check the operating system (on the computer where the script runs). I know I can use os.system('uname ... Linux. How can I check it? 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 the contents of a webpage in a shell variable?

In Linux how can I fetch an URL and get its contents in a variable in shell 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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534 views

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linux - How to list the size of each file and directory and sort by descending size in Bash?

I found that there is no easy to get way the size of a directory in Bash? I want that when I type ls - ... sort by size order. Is that 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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571 views

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linux - Copy folder structure (without files) from one location to another

I want to create a clone of the structure of our multi-terabyte file server. I know that cp --parents can ... file server is CIFS mounted there. See Question&Answers more detail:os...

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

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551 views

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linux - How to show line number when executing bash script

I have a test script which has a lot of commands and will generate lots of output, I use set -x or set - ... would be a great help. 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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437 views

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linux - How to perform grep operation on all files in a directory?

Working with xenserver, and I want to perform a command on each file that is in a directory, grepping some stuff ... no more files are found. See Question&Answers more detail:os...

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

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901 views

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linux - How to make rpm auto install dependencies

I have built two RPM packages proj1-1.0-1.x86_64.rpm libtest1-1.0-1.x86_64.rpm proj1 depends on the file ... other way? Thanks for any 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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679 views

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linux - Recursively list all files in a directory including files in symlink directories

Suppose I have a directory /dir inside which there are 3 symlinks to other directories /dir/dir11, /dir/dir12, ... into them to list further. 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 send data to local clipboard from a remote SSH session

Borderline ServerFault question, but I'm programming some shell scripts, so I'm trying here first :) Most ... are appreciated as well. See Question&Answers more detail:os...

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

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687 views

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linux - How to list the contents of a package using YUM?

I know how to use rpm to list the contents of a package (rpm -qpil package.rpm). However, this requires ... YUM be used to achieve 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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569 views

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linux - Freeing up a TCP/IP port?

netstat -tulnap shows me what ports are in use. How to free up a port in Linux? See Question&Answers more detail:os...

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

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