command
Python command not working in command prompt
When I type python into the command line, the command prompt says python is not recognized as an internal or external command, operable program, or batch file. What should I do?
Execute multiple dependent commands individually with Paramiko and find out when each command finishes
I am writing a program in Python which must communicate through SSH with a physical target, and send to this targets some commands automatically (it is for testing).
python getoutput() equivalent in subprocess
I want to get the output from some shell commands like ls or df in a python script. I see that commands.getoutput(‘ls’) is deprecated but subprocess.call(‘ls’) will only get me the return code. I’ll hope there is some simple solution. Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the … Read more
What is $() in a command?
What is $() in Linux Shell Commands?
ifconfig command not found
I’ve just installed CentOS7 as a virtual machine on my mac (osx10.9.3 + virtualbox) .Running ifconfig returns command not found. Also running sudo /sbin/ifconfig returns commmand not found. I am root. The output of
echo $PATH is as below.
What’s the difference between “dir” and “ls”?
I have compared the man pages of dir and ls and they seem to be exactly the same. Both are part of GNU coreutils and “list directory contents”.
What does <<< mean?
What does <<< mean? Here is an example: $ sed 's/a/b/g' <<< "aaa" bbb Is it something general that works with more Linux commands? It looks like it’s feeding the sed program with the string aaa, but isn’t << or < usually used for that? Answers: Thank you for visiting the Q&A section on Magenaut. … Read more
clear full-screen in script and get the previous prompts after exiting script
Today I was using glance tool in my office to monitor CPU utilization.When I run glance from terminal ,the command clears the screen and after all the work when I quit back to the terminal,the previous prompts are still there on my screen.I mean that I can see all the previous lines.My question is how is this effect of clearing screen achieved.If they had used command like clear,It should have cleared the whole screen,how did they manage to get back all the previous prompts ? I want to implement the same feature for some of my scripts.
What’s the difference between “realpath” and “readlink -f”
I’ve read a lot about realpath command and how it has been deprecated with the readlink -f being now recommended. I have also seen in some places that the reason why realpath was introduced was for the lack of such functionality in readlink and that once it has been introduced, realpath was no longer needed and its support discontinued by most OS vendors.