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Questions[tee](ubuntu)

Martin Hope
Ahmed Hussein
Asked: 2020-07-31 19:46:46 +0800 CST
  • 4

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 :

Expected file content:

Hello world

real 0m0.000s
user 0m0.000s
sys 0m0.000s

Actual content:

Hello world"

can anyone help ?

redirect tee
Martin Hope
An Ignorant Wanderer
Asked: 2020-07-20 13:49:19 +0800 CST
  • 1

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, and same for command3 and command2? I tried using wait like this, but it didn't work:

some commands | tee -a >(command1 >> file) >(wait command2 >> file) >(wait command3 >> file)
command-line tee
Martin Hope
Mehmet
Asked: 2020-04-26 14:22:49 +0800 CST
  • 1

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/intel-rapl:0/

When I use above command, I get tee: constraint_0_power_limit_uw: No data available error.

How can I fix that error?

tee echo
Martin Hope
Mosky
Asked: 2018-11-30 08:58:50 +0800 CST
  • 1

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/inputfile.txt"

This is the part that is giving me problems:

{
INPUT1=$1

#Save each subdirectory as an element of the array
bkpIFS="$IFS"
IFS='/' read -r -a inputstring <<< $INPUT1
IFS="$bkpIFS"

#Get number of levels
PATHLENGTH=${#inputstring[@]}

if [ PATHLENGTH > 1 ]
then
    #Delete the input file from path
    FILEONLY=${inputstring[-1]}
    INPUTFOLDER=${INPUT1/%$FILEONLY/}
    #Name the log file
    LOGFILE="arrays.log"
    LOGPATH="$INPUTFOLDER$LOGFILE"
else
    #If input file is at working directory
    LOGPATH="arrays.log"
fi

# Here goes the main script...

printf "\nDone!\n"

}  | tee $LOGPATH

I'm just getting an empty file named "1" at the working directory. Of course if I write in the last line:

} | tee arrays.log

everything goes well, but I need each log file in the same place than the input file.

log bash tee