tty

问题 I spend several days setting up the file /etc/sudoers to be able to give permissions to root to the user jenkins . I have Jenkins installed on my server because I host several projects with symfony, ionic, neo4j, etc... The problem is that I can not do build in the projects with ionic, I get this error: sudo: no tty present and no askpass program specified. This is the content of my /etc/sudoers file: # # This file MUST be edited with the 'visudo' command as root. # # Please consider adding

问题 Having read various resources including http://www.linusakesson.net/programming/tty/ I am still confused and curious about the structure and use of pseudo-terminals In a linux terminal (bash not tty) we have three streams: stdin stdout stderr There is a file descriptor for each one. These file descriptors map to streams FILE*. For example, we can use fileno() and fdopen() to switch between them. What can I do with a pty? I normally think of stdout, stdin and stderr being associated with a

问题 Having read various resources including http://www.linusakesson.net/programming/tty/ I am still confused and curious about the structure and use of pseudo-terminals In a linux terminal (bash not tty) we have three streams: stdin stdout stderr There is a file descriptor for each one. These file descriptors map to streams FILE*. For example, we can use fileno() and fdopen() to switch between them. What can I do with a pty? I normally think of stdout, stdin and stderr being associated with a

问题 Having read various resources including http://www.linusakesson.net/programming/tty/ I am still confused and curious about the structure and use of pseudo-terminals In a linux terminal (bash not tty) we have three streams: stdin stdout stderr There is a file descriptor for each one. These file descriptors map to streams FILE*. For example, we can use fileno() and fdopen() to switch between them. What can I do with a pty? I normally think of stdout, stdin and stderr being associated with a

问题 ssh -t remotehost vim /tmp/x.txt I know that I can run a command like the above. But I would like to be able to run any local bash code in a remote machine. For this reason, I'd like to call the remote 'bash -s' so that can process any local bash code. ssh -t remotehost 'bash -s' <<< vim /tmp/x.txt However, the above example shows "Pseudo-terminal will not be allocated because stdin is not a terminal." Is there any way to let ssh take local bash code via stdin and run it via the remote 'bash

来源： https://stackoverflow.com/questions/54013753/is-there-a-cross-platform-way-to-check-if-stdout-is-being-piped-into-another-pro

问题 I want to make linux just take 1 keystroke from keyboard using sys_read, but sys_read just wait until i pressed enter. How to read 1 keystroke ? this is my code: Mov EAX,3 Mov EBX,0 Mov ECX,Nada Mov EDX,1 Int 80h Cmp ECX,49 Je Do_C Jmp Error I already tried using BIOS interrupt but it's failed (Segmentation fault), I want capture number 1 to 8 input from keyboard. Thanks for the advance Sorry for bad english 回答1: Syscalls in 64-bit linux The tables from man syscall provide a good overview

问题 I want to make linux just take 1 keystroke from keyboard using sys_read, but sys_read just wait until i pressed enter. How to read 1 keystroke ? this is my code: Mov EAX,3 Mov EBX,0 Mov ECX,Nada Mov EDX,1 Int 80h Cmp ECX,49 Je Do_C Jmp Error I already tried using BIOS interrupt but it's failed (Segmentation fault), I want capture number 1 to 8 input from keyboard. Thanks for the advance Sorry for bad english 回答1: Syscalls in 64-bit linux The tables from man syscall provide a good overview

问题 As the question specifics ,i am getting this error while executing my bash script In exact terms i get following error bash: line 26: /dev/tty: No such device or address bash: line 29: /dev/tty: No such device or address Here are the concerned Line 26 and 29 in script respectively which causes the issue read -e -p "Paste the links : " links </dev/tty read -e -p "Enter your input : " sub </dev/tty If someone wonders, i cannot simply remove writing to </dev/tty from line 26 and 29 , it causes

问题 As the question specifics ,i am getting this error while executing my bash script In exact terms i get following error bash: line 26: /dev/tty: No such device or address bash: line 29: /dev/tty: No such device or address Here are the concerned Line 26 and 29 in script respectively which causes the issue read -e -p "Paste the links : " links </dev/tty read -e -p "Enter your input : " sub </dev/tty If someone wonders, i cannot simply remove writing to </dev/tty from line 26 and 29 , it causes