CLI oneliners accumulated during my life, tested on macOS

cli_utils.sh

# This stuff was tested on zsh. It should work on bash but won't work on tcsh for sure!

# Dumb way to sort du output by size and only list up to the 50 top dirs that we can access
# |& is used to pipe stderr to the next command
# 
du -k |& grep -v "Permission denied" | sort -nr | cut -f2 | head -n 50 | xargs du -sh |& grep -v "Permission denied" |& grep -v "No such" |& grep -v "Operation not"

# Compute the percentage of something
# 710 here is final expected number of files, we use `ls | wc -l` to get the current num of files
# then we pipe it into bc to do the math, then print to the console and save to file at the same time using tee
# scale=4 sets the float precision of bc
# In alternative, dc could be used instead of bc
echo "scale=4;`ls | wc -l | sed 's/ //g'` / 710 * 100" | bc | tee progress.txt