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Top Forums UNIX for Dummies Questions & Answers how much we can pipe in shell prompt ? Post 302354594 by pludi on Friday 18th of September 2009 06:06:31 PM
Old 09-18-2009
If there is a limit, it's a quite large one. Example taken from Randall Munroe:
Code:
cat /usr/share/dict/words | fgrep -v "'" | \
perl -ne 'chomp($_); @b=split(//,$_); print join("", sort(@b))." ".$_."\n";' | \
tee lookup.txt | perl -pe 's/^([^ ]+) .*/\1/g' | awk '{ print length, $0 }' | \
sort -n | awk '{$1=""; print $0}' | uniq -c | sort -nr | egrep "^[^0-9]+2 " | \
awk '{ print length, $0 }' | sort -n | awk '{$1=""; print $0}' | \
perl -pe 's/[ 0-9]//g' | xargs -i grep {} lookup.txt | perl -pe 's/[^ ]+ //g' |\
tail -n2

 

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print(1)							   User Commands							  print(1)

NAME
print - shell built-in function to output characters to the screen or window SYNOPSIS
ksh print [ -Rnprsu [n]] [arg...] DESCRIPTION
ksh The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1). OPTIONS
The following options are supported: -n suppresses new-line from being added to the output. -R -r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than -n. -p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output. -s causes the arguments to be written onto the history file instead of standard output. -u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1. EXIT STATUS
The following exit values are returned: 0 Successful operation. >0 Output file is not open for writing. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
echo(1), ksh(1), attributes(5) SunOS 5.10 15 Apr 1994 print(1)
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