OK, first thing first, you're also trying (in a syntactically incorrect way) to append STDOUT to the log too (which would never actually assign anything to the variable.... if the whole thing was enclosed in backticks... ).
we have two alpha stations which are connected on two sides on the same wan (64k leased line), here is one problem described as follow.
when i do a ftp to copy a file form one to another, an error mesg shown and the file lenth is 0 at last.
diamond> ftp 192.168.50.1
Connected to... (1 Reply)
I have a Dell Latitude c840 that runs SuSE 8.0 Enterprise server that hangs on bootup on trying to create /var/log/boot.msg. It boots in rescue mode just fine. I've tried deleting the old boot.msg file that was in there, but that did no good.
Does anyone have any advice/know of a website with... (3 Replies)
Sometimes, for any reason, the UX System sends messages to /var/mail/root and/or to Error Log of the guardian.
I'll appreciating if you help me to configure so that those messages are also sent to the System Administrator's e-mail address.
Regards
Gege (1 Reply)
mit@mydomain.com
here is the latest error message:
There was a problem logging onto your mail server. Your Password was rejected. Account: 'mit@mydomain.com', Server: 'mail.mit.com', Protocol: POP3, Server Response: '-ERR Logon failure: unknown user name or bad password.', Port: 110,... (2 Replies)
Hi,
I have a script to compare 2 files.
file1=$1
file2=$2
num_of_records_file1=`awk ' END { print NR } ' $file1`
num_of_records_file2=`awk ' END { print NR } ' $file2`
i=1
while
do
sed -n "$i"p $file1 > file1_temp
sed -n "$i"p $file2 > file2_temp
diff file1_temp... (5 Replies)
Hi friends,
Please suggest a solution for this.
A script has following things.
echo "Enter P for PML"
echo "Enter V for VVL"
echo "Enter L for LNL"
echo "Enter G for GDL"
read choice
echo ${choice} >> LOG_Daily.txt
if operator enters anything other that P/V/L/G it should show an... (8 Replies)
#!/bin/ksh -x
cd /tmp/tj
ftp -n servername.com << DONE
user username password
as
put test.log
quit
close
DONE
echo "testing..."
sh -x scriptname, and it shows all, but username, as, put, quit, close, DONE.
how can i see those ? (1 Reply)
Hi guys,
been scratching round the forums and my mountain of resources.
Maybe I havn't read deep enough
My question is not how sed edits a stream and outputs it to a file, rather something like this below:
I have a .txt with some text in it :rolleyes:
abc:123:xyz
123:abc:987... (7 Replies)
I'm trying to complete a bash script to capture if an external webcam is active in a video conference session. Some users will switch the camera to the built-in MAC camera. When this happens I want to trigger a set of events.
Things tried: reviewed the console.app to look for patterns on when... (6 Replies)
Discussion started by: dallas88
6 Replies
LEARN ABOUT BSD
expr
EXPR(1) General Commands Manual EXPR(1)NAME
expr - evaluate arguments as an expression
SYNOPSIS
expr arg ...
DESCRIPTION
The arguments are taken as an expression. After evaluation, the result is written on the standard output. Each token of the expression is
a separate argument.
The operators and keywords are listed below. The list is in order of increasing precedence, with equal precedence operators grouped.
expr | expr
yields the first expr if it is neither null nor `0', otherwise yields the second expr.
expr & expr
yields the first expr if neither expr is null or `0', otherwise yields `0'.
expr relop expr
where relop is one of < <= = != >= >, yields `1' if the indicated comparison is true, `0' if false. The comparison is numeric if
both expr are integers, otherwise lexicographic.
expr + expr
expr - expr
addition or subtraction of the arguments.
expr * expr
expr / expr
expr % expr
multiplication, division, or remainder of the arguments.
expr : expr
The matching operator compares the string first argument with the regular expression second argument; regular expression syntax is
the same as that of ed(1). The (...) pattern symbols can be used to select a portion of the first argument. Otherwise, the
matching operator yields the number of characters matched (`0' on failure).
( expr )
parentheses for grouping.
Examples:
To add 1 to the Shell variable a:
a=`expr $a + 1`
To find the filename part (least significant part) of the pathname stored in variable a, which may or may not contain `/':
expr $a : '.*/(.*)' '|' $a
Note the quoted Shell metacharacters.
SEE ALSO sh(1), test(1)DIAGNOSTICS
Expr returns the following exit codes:
0 if the expression is neither null nor `0',
1 if the expression is null or `0',
2 for invalid expressions.
7th Edition April 29, 1985 EXPR(1)