Stdout is the standard output stream is the default destination of regular output for applications.

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3answers
1k views

zcat | head : write error from large gz file

I was trying zcat to get only the first 1M lines of a compressed .gzip file into a new one. However, I get the following error: $ zcat path/to/R2.fq.gz | head -100 >R2.fqtest head: write error: ...
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2answers
25 views

How do I output a variable without changing if it has a newline or not in a shell script?

I have a shell script that takes input from another shell script. The stream gets piped in on stdin. I need to capture all the bytes of the stdin stream to a single variable in the shell script. ...
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1answer
30 views

Which is the preferred approach to pass command/script arguments to a log file?

Generally, I am wondering how I can pass the arguments from a terminal command to stdout. More specifically, I am using tar as part of my backup process and I would like the parameters (especially ...
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0answers
34 views

How tell Linux GUI apps NOT to detach from console?

I need to debug some apps under Ubuntu. When i use FC_DEBUG=2053 gnome-calculator or FC_DEBUG=2053 mtpaint i get useful readout on console. But using FC_DEBUG=2053 firefox or FC_DEBUG=2053 ...
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0answers
117 views

ffprobe: selecting from time until the next IFrame

I'm using ffprobe to get a set a set of frames starting from one IFrame to the next. ffprobe "<file>.MP4" -select_streams v -show_frames -read_intervals 30.031 When I'm done processing this ...
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0answers
12 views

tmux freezed pane in copy-mode

tmux seems to have a limit on scroll backs buffer and block my process when it is full. Any method to prevent accidental blocking of process? Maybe auto quite the copy-mode when I disconnect? How to ...
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0answers
75 views

How can I view the stdout output from an app that I double-click?

How can I view the stdout output from an app that I double-click or use the open -a command to launch? You used to be able to view it (in real time) in the Console app, but it seems that in 10.9.3 ...
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0answers
1k views

bash: redirect the stderr/stdout of a running process?

I have a running process running in a bash terminal that is printing some prompt, and I would like to send it to the background with the stderr/stdout prompt that is printing either redirected to ...
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0answers
886 views

STDOUT redirection to a file does not work if Groovy script run directly from command line (.groovy in PATHEXT)

I've updated the title, please see update below for the reason. I have asked this question on Stackoverflow, but still didn't receive an answer. Groovy: redirect stdout to a file does not work. ...
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0answers
441 views

user crontabs don't work, only /etc/crontab

Hi when I use the command crontab -e to set up cron, the commands get triggered (according to syslog) but nothing happens. Also if I run sudo crontab -e. The only way to actually get cron working ...