Questions tagged [tee]
`tee` is a command that reads from standard input and writes to standard output and to a file, so that the user can see output from a command at the same time as saving it.
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Grep output from application, show to screen and write to file?
I run an application and pipe the output to grep. This works. However, I wish to show the output on both screen and write to file.
So I am piping the grep result to tee:
./app | grep something | tee ...
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Bash - How to add new line when appending text to a file?
I'm running this command to append output text data to a markdown file:
git log -1 --oneline --skip=1 | tee -a page1.md
For the most part functionality is great, but I need to format the output so ...
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How to append date and text to a file as an alias?
I want to create an alias to append a dated note to a file. (The use case I want to reproduce : Sebastian Daschner - How to do effective note taking as developer.
So far I was able to append the date, ...
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using a tee inside a .desktop file for debug logging
How do I write a .desktop file that includes a tee?
Normally I start my debug logging from terminal, using a .sh like the below:
sudo ./start-ds.sh 2>&1 | tee output.log
I have to go into ...
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Why use tee with wget? Isn't it superfluous?
So I came across this code for downloading youtube-dl using wget which pipes into tee here: How can I update youtube-dl?
The code being:
wget -O - https://yt-dl.org/downloads/latest/youtube-dl | sudo ...
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1
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How do I append a line to all .gitignore files recursively?
I have a directory that have multiple subdirectories with git repositories. I want to add desktop.ini to all .gitignore files in these subdirectories.
I know i can do echo "desktop.ini" | ...
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How to get both the output of the time command in a file?
I ran the command time echo "Hello world" | tee output.txt expecting to get the full output to both terminal stdout and the output.txt file. However, the file content is not what I expect :
...
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Can't save output of particular command in particular environment (cron)
My crontab is not producing logs for a particular command I'm using to monitor my network; other commands work fine.
* * * * * /usr/bin/COMMAND opt1 opt2 >> /home/pi/LOG.log 2>&1
The ...
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Wait for previous command to finish while using tee
I'm using tee as follows:
some commands | tee -a >(command1 >> file) >(command2 >> file) >(command3 >> file)
How can I delay the execution of command2 till command1 ends, ...
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tee: constraint_0_power_limit_uw: No data available
I am trying to replace value in the file of constraint_0_power_limit with new value using echo "45000000" | sudo tee constraint_0_power_limit_uw
That file is under /sys/class/powercap/intel-rapl/...
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Redirect program ouput to screen and file simultaneously
I have a Python script. I want to save its result while it outputs something in the terminal. I tried
python program.py 2>&1 | tee output.txt
However, it seems only after the program finishes, ...
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use tee to save log file in a subfolder (defined in a variable)
The input file of a script is passed as an argument from command line. I want the log file from tee to be saved in the same directory than the input file:
Lets say that input file is at "data/temp/...
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Can I use tee for large logoutputs on a server 7/24?
The tee command https://unix.stackexchange.com/questions/35935/how-to-log-to-file-and-to-console writes the console output as well to a file.
However when I open the file while the main program is ...
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use "tee" command to append asterisk debug information to file
When I run:
$ asterisk -rvvv | tee temp-log-asterisk.txt
$ ubuntu*CLI> dialplan reload
$ exit
this is the real output of asterisk:
Now when I look into the content of temp-log-asterisk.txt I ...
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Directing not empty output into a file
I want to save only non-empty output of find command into a file. If there is no output file should not be created.
$ ls folder
aa
$ find . -name 'bb' | tee file
$ cat file
$ ls folder
aa file
How ...
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The right way to configure USB power in ubuntu
echo on | sudo tee /sys/bus/usb/devices/*/power/level > /dev/null
The command above is used to keep USB power on (Turns off USB power-saving). I execute the command every time I log in to Ubuntu ...
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how to print for multiple files differently? [duplicate]
Give a single command line for searching a file ‘datafile’ for the string “Internet”, sending the output of the command to a file called ‘Internet.freq’ and any error message to a file ‘error.log’. ...
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Cannot duplicate all ouput to a file with tar/pigz [duplicate]
I'm using in my script:
tar cfh - "$SRC_DIR" --exclude-from <(find $SRC_DIR -size +$EXCLUDE_MB_FILES) | pigz -9 --quiet --keep --recursive --rsyncable > $BACKUP_TARGER_DIR/$ARC_NAME | tee $...
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Why is the tee command necessary?
On Ubuntu my Brightness keys don't work.
So instead to open Ubuntu settings every time, I want to write a shell script to use in my .bashrc.
Now I don't understand at all why the tee command in the ...
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Editing a text file does not save changes
I am trying to follow instructions from here to enable backlight for my keyboard on Dell Vostro 3350.
I want to change the contents of a /sys/class/leds/dell::kbd_backlight/brightness file, which ...
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How to append tee to a file in Bash?
These are commands I type in the terminal
echo -e "First Line" | tee ~/output.log
echo -e "Second Line" | tee ~/output.log
When I look in the file output.log I only see 'Second ...
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Debugging preseed/late_command for ubuntu 16.04 server: tee not found vs nonexistent directory
I am trying to run the following preseed file on a ubuntu 16.04 server machine (during a packer build):
d-i preseed/late_command string \
in-target mkdir -v -p -m 0440 "/etc/sudoers.d"; \
in-target ...
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Running tee from alt+f2
For some reason this works from term and does not from "run" dialogue or Openbox shortcuts...
echo 200 | sudo tee /sys/class/backlight/intel_backlight/brightness
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lint: command not found
Does Ubuntu have a lint utility? How is it installed?
In computer programming, lint is a Unix utility..
https://en.wikipedia.org/wiki/Lint_%28software%29
thufir@mordor:~$
thufir@mordor:~$ gcc ...
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Reading and writing a file: tee command
It is well known that a command like this:
cat filename | some_sed_command >filename
erases file filename, as the output redirection, being executed before the command, causes filename to be ...
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'sudo tee' command gone wrong | Removing a source.list that can't be read?
This has happened twice where I followed instructions on installing software and then having the software center open then close immediately as a result of running the commands from the instructions. ...
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tee results in a null file
I try to change Apache configuration with this:
sudo awk '/<Directory \/var\/www\/>/,/AllowOverride None/{sub("None", "All",$0)}{print}' /etc/apache2/apache2.conf | sudo tee /etc/apache2/...
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Tee doesn't get whole output from the pipe
I have a script executing commands like:
export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH;./some_app -i $INDEX | tee $LOG
echo "Number of errors: $(grep "ERROR" $LOG | wc -l)"
The problem is probably in ...
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GPS nmea output, saving only last record to external file linux
I'm using a globalsat G-STAR IV GPS for my Vehicular Ad Hoc networks project. In this, the nmea output coming from the GPS gets updated every 1 second. I want to know if there is a way to save just ...
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How to Automatically save terminal command output to file [duplicate]
Is there a way that I can save the terminal command output to a file, without having to write the command ' | tee /abc.txt' every-time around?
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Is there any significance to using tee?
Why is it that almost all instructions regarding appending text to system files like fstab and /etc/apt/sources.list.d/<name>.list involve using tee and echo to append said text?
Take the ...
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Capturing text output to a log, while printing REALTIME to terminal
My output prints approximately 1 line per second to the terminal, maybe 100-200 lines in total.
I've tried to capture the output using tee, but it prints all the lines at the end of the process, not ...
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how to redirect output to a log file without tee? normal redirection is not working
why not use tee? because the terminal rendering of the output makes the application run slower.
for some reason, this is not working:
application 2>&1 >"$logFile"
the output keeps going ...
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