Questions tagged [command-line]
The command-line is the interactive interface to your shell.
6,240
questions
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What is the output of the following ROT13 transformation command? [closed]
The command I'm using is:
echo "YRNEAVAT_YVAHK_SHAQNZRAGNYF" | tr '[A-Z]' '[N-ZA-M]'
I'm having trouble figuring out the exact output of this command.
Could someone explain the process and ...
6
votes
3
answers
557
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Is there an equivalent of caniuse for commands on posix systems?
I'm thinking about using a callout to the jq in a utility script I'm writing, rather than parsing JSON manually.
In order to make the script as portable as possible, I want to know which flavors of ...
0
votes
3
answers
34
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Play sound after command and also pipe output
I can easily pipe the output of a command like:
some_command | less
I can also easily play a sound after a command like:
echo test; print \\a
aplay, beep or others could also be used for sound.
...
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1
vote
1
answer
81
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Bash completion after quotation mark
I am experimenting with bash completion to write a general completion library in C associated with command line parsing and stumbled in a behavior for which I can find no documentation.
I am using the ...
- 13
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1
answer
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Is there a port of the Windows' REN command for Unix-like operating systems? [duplicate]
I already know the "rename" command in GNU/Linux. However, it is very complicated and cumbersome because it uses regular expressions.
For example, in Windows, I can simply rename files in ...
3
votes
4
answers
976
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How can one count how many pixels a GIF image has via command line?
I use Ubuntu. I have a large number of GIF images. How can one count how many pixels a GIF image has via command line?
- 5,155
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1
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87
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Find actual file by only file name, not literally everything non-related
PuTTY/SSH and logged in as root I simply want to find any instances of the file PEAR.php.
I've looked through a dozen different tutorials but they seem to just copy-paste the same instructions. An ...
- 194
0
votes
4
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command-line tool to sum the values in a column of a CSV file
I am looking for a command-line tool to calculate the sum of the values in a specified column of a CSV file. (Update: The CSV file might have quoted fields, so a simple solution just to break on a ...
- 589
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1
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Is there any sort of command-line tool I can use to detect and write metadata for a song's key?
I would like to get into DJing, or at least putting songs together in series and making it work. I have already used bpmwrap to tag the tempo for every song in my library, and it immediately made me ...
0
votes
1
answer
31
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rpm -qa but filtering for partial package name match?
I'm learning about the rpm package manager command. I figured out how to use rpm -qa however the list exceeds the overflow of the SSH program so I can't see the entire list.
How do I use the rpm ...
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How to set up public Linux station safely?
On a Linux cloud machine, I want to set up a learning station for beginners (pubnix/pubunix).
How can I block all internet except for incoming SSH (ssh user@cloudmachine) and except for SSH local port ...
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1
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open vpn - not working but also dont returns any error
i have both open vpn server and client. the client is my windows pc and the server is a ubuntu 22 VPS.
im running openvpn on the serverside with this command :
openvpn --dev tun --ifconfig 172.16.0.1 ...
1
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0
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49
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Shell: Customizing the "Display all N possibilities? (y or n)" message
I already know that double-pressing the Tab key on Bash terminal will enlist all files and folders in the current working directory or, when appropriate, show Linux executables that I can run. I want ...
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2
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How to print out all printable ASCII strings contained in binary data?
How can I print out all printable ASCII strings
(e.g., longer than four chars) contained in a binary file?
I used strings -a -w file.bin >>output.
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0
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2
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command suggestions while typing for beginners
When typing the commands in any shell, can there be any kind of setting that can be enabled for beginners to type just an alphabet and it will suggest multiple commands that the beginner might be ...
