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Full Discussion: Insane redirection behavior
Top Forums Shell Programming and Scripting Insane redirection behavior Post 302708855 by chebarbudo on Tuesday 2nd of October 2012 10:40:04 AM
Old 10-02-2012
Quote:
Originally Posted by Franklin52
It should be easier if you also post the input file and the desired output.
The input file is random. It just contains 10 rows but we don't care what they are.
The output should be counting down from 9 to 0.

---------- Post updated at 16:40 ---------- Previous update was at 16:23 ----------

Hi alister,

You were right.
Here are the two new scripts...
Code:
i=0
tmpfile=/tmp/tmp.txt
while read -r; do
    echo "$REPLY" > /dev/null
    ((++i))
   sed "1,${i}d" $tmpfile | wc -l
done < $tmpfile

Code:
i=0
tmpfile=/tmp/tmp.txt
while read -r; do
    echo "$REPLY" > /dev/null
    ((++i))
    sed "1,${i}d" $tmpfile > /tmp/output; wc -l /tmp/output
done < $tmpfile

... and their output...
Code:
root@debian:~# ./script1
9
8
7
6
5
4
3
2
1
0
root@debian:~# ./script2
9 /tmp/output
8 /tmp/output
7 /tmp/output
6 /tmp/output
5 /tmp/output
4 /tmp/output
3 /tmp/output
2 /tmp/output
1 /tmp/output
0 /tmp/output

Regards
Santiago
 

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LEARN ABOUT DEBIAN

i-ls

i-ls(1) 						      General Commands Manual							   i-ls(1)

NAME

       i-ls - display file stat and checksum information for files

SYNOPSIS

       i-ls [-s] filename

       i-ls [-s] dirname

       Specify a filename for i-ls to examine, or specify a directory with dirname to examine all the files in the directory.

       -s

	      Do not show/calculate checksums for all regular files.

DESCRIPTION

       The integrit system detects intrusion by detecting when trusted files have been altered.

       integrit records information about files in a database.	i-ls allows the user to see that information for live files.

       The output syntax is the same as that of integrit.

EXAMPLES

	    i-ls /tmp/foo.txt

       shows file stat attributes for the file, "/tmp/foo.txt".

	    i-ls /tmp

       shows file stat attributes for all files in the directory, "/tmp".

	    i-ls -s /tmp

       shows file stat attributes for all files in the directory, "/tmp", also including also checksums for all regular files.

AUTHOR

       Ed L Cashin <ecashin@users.sourceforge.net>

       See the integrit web site for up to date releases and information at

	   http://integrit.sourceforge.net/

SEE ALSO

       Integrit File Verification System Manual (info), lstat(2)

Version 4.1							   Jul 27, 2001 							   i-ls(1)
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