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Shell Programming and Scripting

Help for pr command

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Top Forums Shell Programming and Scripting Help for pr command
# 1  
Old 02-03-2010
Help for pr command
hi,

can anyone explain the significance of the pr command in the below shell script

temp="/home/input.$$"

pr -e -t >$temp

when i tried executing from the shell , the file in $temp is emptied and the shell execution never comes to an end. please explain.
# 2  
Old 02-03-2010

You haven't supplied a filename for pr to read, so it is reading from the standard input, i.e., the terminal.

# 3  
Old 02-03-2010
ok im giving input from the terminal. and terminating it with ctrl+d.
thse are the three lines of the actual code.

temp="/home/input.$$"
pr -e -t >$temp
cut -c1-1 $temp >$temp2

i see that it pastes the first characters of $temp in $temp1. wat is the use of pr command here.?

wat is the use of giving input from the terminal as it is savd nowhere.?
# 4  
Old 02-03-2010
Quote:
Originally Posted by anijan
ok im giving input from the terminal. and terminating it with ctrl+d.
thse are the three lines of the actual code.

Please put code inside [CODE] tags:
Quote:
Code:
temp="/home/input.$$"
pr -e -t >$temp
cut -c1-1 $temp >$temp2

i see that it pastes the first characters of $temp in $temp1.

You haven't done anything with $temp1; it's not defined or used anywhere. Do you mean "$temp2"?
Quote:
wat is the use of pr command here.?

Have you read the man page?
Quote:
wat is the use of giving input from the terminal as it is savd nowhere.?

It is saved (in "$temp").
# 5  
Old 02-03-2010
Thnks for ur help..Sorry it was a mistake from my side. its temp2 and not temp1.
It is working fine now..
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