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Top Forums UNIX for Dummies Questions & Answers how much we can pipe in shell prompt ? Post 302354589 by adc22 on Friday 18th of September 2009 05:32:11 PM
Old 09-18-2009
Question

Quote:
Originally Posted by vidyadhar85
what do you mean by how much ??? in question 1..
echo $11 will print 11th argument like echo $3
mkdir -p dir1/dir2/dir3
by 'how much' I meant how many times. eg, echo "hello unix.com" | cut -f1 -d"." | grep 'unix' , here I used pipe twice. like wise can I pipe 50 or 60 or may be 100 times,eg, some command | some command | ........ 'n' times ........ | some command
 

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ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
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