cheat.sheets/sheets/xargs

# 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
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			`# Find all file names ending with .pdf and remove them`
fixed xargs errors + added own examples 2017-05-25 10:22:44 +00:00			`find -name \*.pdf \| xargs rm`
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			`# 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`
fixed xargs errors + added own examples 2017-05-25 10:22:44 +00:00
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			`# Find all file name ending with .pdf and remove them`
xargs -0: (thanks to quizac@wykop) 2017-05-25 16:48:40 +00:00			`# (bulletproof version: handles filenames with \n and skips *.pdf directories)`
			`# -r = --no-run-if-empty`
			`# -n10 = group by 10 files`
really remove the files 2019-04-16 19:57:17 +00:00			`find -name \*.pdf -type f -print0 \| xargs -0rn10 rm`
xargs -0: (thanks to quizac@wykop) 2017-05-25 16:48:40 +00:00
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			`# If file name contains spaces you should use this instead`
fixed xargs errors + added own examples 2017-05-25 10:22:44 +00:00			`find -name \*.pdf \| xargs -I{} rm -rf '{}'`

			`# Will show every .pdf like:`
Substitute tabs for (4) spaces 2020-03-16 19:51:55 +00:00			`# &toto.pdf=`
			`# &titi.pdf=`
fixed xargs errors + added own examples 2017-05-25 10:22:44 +00:00			`# -n1 => One file by one file. ( -n2 => 2 files by 2 files )`
			`find -name \*.pdf \| xargs -I{} -n1 echo '&{}='`
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			`# The above is, however, much faster and easier without xargs:`
			`find -name \*.pdf -printf "%p\n"`
fixed xargs errors + added own examples 2017-05-25 10:22:44 +00:00
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			`# Group words by three in a string`
			`seq 1 10 \| xargs -n3`