shell adventure

memo.txt

~/.bashrc
```
export PATH="/notebooks/webcam/ffmpeg_sources/bin:$PATH"
export OPENCV_FFMPEG_CAPTURE_OPTIONS="video_codec;h264_cuvid"
export OPENCV_V4L_CAPTURE_OPTIONS="video_codec;h264_cuvid"
export OPENCV_V4L2_CAPTURE_OPTIONS="video_codec;h264_cuvid"
alias ls='ls -lsrht --color=auto'
alias docker='sudo docker'
alias nvidia-docker='sudo nvidia-docker'
alias cuda-info='cat /usr/local/cuda/version.txt && nvcc --version'
```
~/.bashrc at ssh
```
sudo sshfs -o allow_other -o uid=1002 -o gid=1002 me@bla.bla:/home/me/Projects/bla ~/bla
sudo sshfs -o allow_other -o uid=1002 -o gid=1002 me@bla.bla:/home/me/DockerFiles ~/DockerFiles
```

~/.bash_logout at ssh
```
sudo fusermount -u DockerFiles/
sudo fusermount -u bla/
```

bash path play
```
$ foo=/usr/local/bin/bar
$ echo "${foo##*/}"
bar
$ echo "${foo%/*}"
/usr/local/bin

filename=$(basename -- "$fullfile")
extension="${filename##*.}"
filename="${filename%.*}"

find . -name \*.xls -exec cp {} newDir \

# watch file tail with filter
watch -n 5 "tail -n 3000 log | grep --line-buffered '.*avg.*' | awk -v n=10 'NR%n==0'"

# draw file tail with filter
[ "$1" ] || (echo "specify input" && exit)
if [ -f $1 ]
then
watch -n 5 "cat $1 | grep --line-buffered '.*avg.*' | awk '\$1%10==0 {print \$3}' | feedgnuplot --lines --points --legend 0 'Yolov3' --title 'Avg loss with mod 10' --terminal 'dumb 90,25' --exit "
fi

tail -n 5000000 log | grep --line-buffered '.*avg.*' | awk '$1%100==0 {print $0}'

command >out 2>&1

strace -p `pidof gdb`

# rmove empty txt file
find . -empty  | xargs rm

# copy jpg after txt
find *.txt -exec bash -c 'basename "$0" ".${0##*.}"' {} \; | while read bn; do mv ./data/$bn.jpg ./prepd/; done

# sync server results with local
rsync -uvr ../server/* ../local/
```