stderr

问题 I am writing a C program where I am printing to stderr and also using putchar() within the code. I want the output on the console to show all of the stderr and then finally flush the stdout before the program ends. Does anyone know of a method that will stop stdout from flushing when a putchar('\n') occurs? I suppose i could just do an if statement to make sure it doesn't putchar any newlines but I would prefer some line or lines of code to put at the top of the program to stop all flushing

问题 I am writing a C program where I am printing to stderr and also using putchar() within the code. I want the output on the console to show all of the stderr and then finally flush the stdout before the program ends. Does anyone know of a method that will stop stdout from flushing when a putchar('\n') occurs? I suppose i could just do an if statement to make sure it doesn't putchar any newlines but I would prefer some line or lines of code to put at the top of the program to stop all flushing

来源： https://stackoverflow.com/questions/61092160/how-to-redirect-both-stdout-and-stderr-to-a-file-from-within-a-bash-script

来源： https://stackoverflow.com/questions/17163413/no-error-messages-with-nohup-and-python

来源： https://stackoverflow.com/questions/13833088/why-doesnt-local-work-on-stderr-and-stdout

问题 I have the following Dockerfile: FROM ubuntu:16.04 RUN apt-get update VOLUME ["/LOGS"] COPY ./testServer . ENTRYPOINT ./testServer 8600 "testServer" has log files that are being written to. They are located in the directory "LOGS". Each time "testServer" is started, a new log is created. What I wanted to do was to "tail" the latest log file in the directory to stdout / stderr. I tried adding: CMD ["/bin/sh", "-c", "tail $( ls -Art /LOGS | tail -n 1 ) > out_server.log 2>&1"] to the Dockerfile

问题 I have this long process in a bash script (one of many) and so I'm experimenting with sending all output to a separate window to monitor, with any errors logged to errorlog.txt . For example: rsync -vahPz foo@bar:/bigfolder/ ./ >> /dev/pts/4 2>> errorlog.txt Trouble is that above doesn't display any errors on the separate window. Is there a way to redirect errors to both my separate window at /dev/pts/4 and errorlog.txt , while still redirecting normal output to /dev/pts/4 too? Something like

问题 I have this long process in a bash script (one of many) and so I'm experimenting with sending all output to a separate window to monitor, with any errors logged to errorlog.txt . For example: rsync -vahPz foo@bar:/bigfolder/ ./ >> /dev/pts/4 2>> errorlog.txt Trouble is that above doesn't display any errors on the separate window. Is there a way to redirect errors to both my separate window at /dev/pts/4 and errorlog.txt , while still redirecting normal output to /dev/pts/4 too? Something like

问题 Hey I am using the same old code for getting all the code outputs PyQT5 QTexBrowser GUI console, but I am also getting next line character ("\n") in all new lines. Code URL - pipe the output of sys.stdout to text browser in pyqt Below is the code I am using from above URL - class Port(object): def __init__(self, view): self.view = view def write(self, *args): # self.view.append(str([*args])) # self.view.append(str(*args).rstrip("\n").lstrip("\n")) self.view.append(*args) GUI Console Output -

问题 This is a follow up question for write to output stream and returning value from shell script function. In shell script, echo can be used to return values from functions. But, if those functions want to print some messages. Then, this can be done by redirecting it to error stream. But when the script is used as a autosys job. then messages from logic functions ends up in error stream file triggering alerts. Is there any way, messages from logic function can be written to output stream and not