02-02-2007
what is wrong here
Hello,
I have a simple script such as
-----------------------------
#! /bin/sh
YEAR=`date -u +%Y`;
MONTH=`date -u +%m`;
DAY=`date -u +%d`;
DATE=$MONTH$DAY$YEAR
LOGFILES=auditTrail-$DATE
LOGMATCH=$LOGFILES\*
ARGUM=''
# find all files and write them to a file
find . -name "$LOGMATCH" > temp
cat ./temp | while read file_line
do
ARGUM=$file_line' '$ARGUM
echo $ARGUM
done
echo "final string contains"
echo $ARGUM
echo "nothing"
----------------------------
I was hoping that it will read a line one at the time and add to the variable ARGUM. It does exactly that within the loop. Yet, when it gets out the loop, last line
echo $ARGUM
return nothing
output looks like this
./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.7.out ./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.1.out ./log/auditTrail-02022007.7.out ./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
final string contains
nothing
-----------------------
I thought that variable ARGUM is global everywhere in the script.
What am I missing?
Thank you in advance
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line(1) General Commands Manual line(1)
NAME
line - Reads one line from standard input
SYNOPSIS
line
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
line: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
OPTIONS
None
DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command
within a shell command file to read from your terminal. The line command always writes at least a newline character.
NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead.
EXIT STATUS
Success. End-of-File.
EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log
This shell procedure displays the message: Enter comments for the log:
It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon)
prompt. See the echo command for information about the c escape sequence.
SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p)
Functions: read(2)
Standards: standards(5)
line(1)