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cheat.sheets/sheets/xargs
terminalforlife f04907ea0d Add examples and clean up existing ones
The examples given using xargs are so far mostly never or rarely ever
best used or even well used with xargs, such as with find, which is
popular, unfortunately.

My reason for adding counters to some of these examples, is that, as an
educational resource, I believe it's important users understand what is
and is _not_ good practice; this is, at least, how I taught myself.
2019-11-06 16:20:51 +00:00

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# Find all file names ending with .pdf and remove them
find -name \*.pdf | xargs rm
# The above, however, is preferable written without xargs:
find -name \*.pdf -exec rm {} \+
# Or, for find's own functionality, it's best as:
find -name \*.pdf -delete
# Find all file name ending with .pdf and remove them
# (bulletproof version: handles filenames with \n and skips *.pdf directories)
# -r = --no-run-if-empty
# -n10 = group by 10 files
find -name \*.pdf -type f -print0 | xargs -0rn10 rm
# If file name contains spaces you should use this instead
find -name \*.pdf | xargs -I{} rm -rf '{}'
# Will show every .pdf like:
# &toto.pdf=
# &titi.pdf=
# -n1 => One file by one file. ( -n2 => 2 files by 2 files )
find -name \*.pdf | xargs -I{} -n1 echo '&{}='
# The above is, however, much faster and easier without xargs:
find -name \*.pdf -printf "%p\n"
# Group words by three in a string
seq 1 10 | xargs -n3