10-27-2014
PATH is a special variable containing a list of paths to look for commands in, by altering it you are preventing the shell from being able to find ordinary commands! Use another variable name.
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1. Shell Programming and Scripting
Hi ,
I have a file like this
parentid process id
45 3456
1 7898
45 7890
1 6789
45 7597
now i need to... (5 Replies)
Discussion started by: namishtiwari
5 Replies
2. UNIX for Dummies Questions & Answers
Hi ,
I have a file like this
parentid process id
45 3456
1 7898
45 7890
1 6789
45 7597
now i need to loop through this and if parentid != 45 , then... (4 Replies)
Discussion started by: namishtiwari
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3. UNIX for Dummies Questions & Answers
I wrote the following code and I am wondering why the variable "mon" can reach values > 12 due to the marked lines. Please help me!
Best regards,
Patrick
#!/bin/csh
# data directory
set datadir = '/isi/input/ncar_global/NCEP_reanalysis/'
# Datums- und Uhrzeitermittlung
set... (1 Reply)
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4. Shell Programming and Scripting
i have the below script that will grep a particular pattern and then will compute the sum of its value.
TZ=`date +%Z`+48 ;a=`date +%Y-%m-%d`
echo $a
sum=0
num=0
for i in `cat Archiver* | grep "$a" | grep 'ERROR' | grep 'CleanLPDataMessage: Missing Intervals'`
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Discussion started by: ali560045
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5. Shell Programming and Scripting
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
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6. Shell Programming and Scripting
Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have:
... (4 Replies)
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7. Shell Programming and Scripting
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
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8. Shell Programming and Scripting
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
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9. Shell Programming and Scripting
Hi,
I want to read file multiple times. Right now i am using while loop but that is not working.
ex.
While read line
do
while read line2
do
echo stmt1
#processing some data based on data.,
done < file2.txt
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Discussion started by: tmalik79
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10. Shell Programming and Scripting
Here's my code:
awk -F '' 'NR==FNR {
if (/time/ && $5>10)
A=$2" "$3":"$4":"($5-01)
else if (/time/ && $5<01)
A=$2" "$3":"$4-01":"(59-$5)
else if (/time/ && $5<=10)
A=$2" "$3":"$4":0"($5-01)
else if (/close/) {
B=0
n1=n2;
... (2 Replies)
Discussion started by: klane
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LEARN ABOUT OPENDARWIN
while
while(n) Tcl Built-In Commands while(n)
__________________________________________________________________________________________________________________________________________________
NAME
while - Execute script repeatedly as long as a condition is met
SYNOPSIS
while test body
_________________________________________________________________
DESCRIPTION
The while command evaluates test as an expression (in the same way that expr evaluates its argument). The value of the expression must a
proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter. Once body has been executed then
test is evaluated again, and the process repeats until eventually test evaluates to a false boolean value. Continue commands may be exe-
cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate termi-
nation of the while command. The while command always returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the while command starts execut-
ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an
infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10:
set x 0
while {$x<10} {
puts "x is $x"
incr x
}
SEE ALSO
break(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)