09-03-2002
In the man page it shows an example. But you are correct that test statement is usually used with another structure.
It is usually used in conjuction with some type of conditional statement like while, for, if, until, etc...
while test -r <myfile> # if the file exists
do
somecommand
done
OR
[ ! -f thisfile ] && echo default > thisfile
My brain is your brain....
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have the code below. I want to said
If TrackErrors > 0 or count == 0
then
MailErrors
else
MailSuccess
fi.
if
then
MailErrors ${count}
else
MailSuccess ${count}
fi
Any helps greatly appreciated. (2 Replies)
Discussion started by: leemjesse
2 Replies
2. Shell Programming and Scripting
Hi all,
I got some problems on executing the following scripts.
Scripts:
if ]; then
echo "M${str}O 0 1" >> ${tempFile}
elif ]; then
echo "M${str}O 1 0" >> ${tempFile}
else
echo "M${str}O 0 0" >> ${tempFile}
fi
Error:
"`;' is not expected."
what's the problem? (2 Replies)
Discussion started by: Rock
2 Replies
3. Shell Programming and Scripting
Hi
I am extracting a column value(DESCRIPTION) from one table and passing it to another db2 statement in a shell code to fetch some value(ID) but the value when passed in where condition is taking as newline+value.
Please find the out put when executed:
+ echo description is ::::... (1 Reply)
Discussion started by: msp2244
1 Replies
4. Shell Programming and Scripting
I want to know the if condition in checking the hostname in unix and then running a cron job (all in a single line)
Thanks (2 Replies)
Discussion started by: prash358
2 Replies
5. Shell Programming and Scripting
Hi all,
I have a file which I want to split into several files based on a condition. This files has several records. I want one record per file. Each record ends with a //. So, I want to separate files based on this condition. I want split files to be named with the name across the field ID (for... (2 Replies)
Discussion started by: kaav06
2 Replies
6. Shell Programming and Scripting
i have a script where i have to find the age of a file,
if
then
echo "dnb file is present for the monthly load" >> $RUNLOG
dnb="1"
else
echo "dnb file has not arrived yet" > $ERRLOG
dnb="0"
fi
i know the file is available so... (3 Replies)
Discussion started by: lovelysethii
3 Replies
7. Shell Programming and Scripting
i have this code
for i in `cat sql_output.txt`
do
-- some script commands
done
sql_output.txt has 1 column with employee_ids
If the sql_output.txt is null then the do loop should not execute.
How can i implement this.
for i in `cat sql_output.txt`
If i is null or empty
then ... (5 Replies)
Discussion started by: rafa_fed2
5 Replies
8. Shell Programming and Scripting
Hi
I am trying to do a "IF" Condition in UNIX where we compare EACH file size in a directory with a SIZE (Parameter passed)
If Each File size EXCEEDS parameter passed SIZE then we manipulate the file.
Somehow the IF condition do not work ?? (is this Variable decalration issue ??)
... (9 Replies)
Discussion started by: Pete.kriya
9 Replies
9. UNIX for Advanced & Expert Users
Hi All,
I have already code to create folder for one country let say US , now we want to create folder/directory for JP country also using shell script , application server.
$COUNTRY='US'
if ]
then
if mkdir -m 777 -p /opt/TEST/$COUNTRY/$INVOICE >/dev/null 2>&1 | tee -a ... (5 Replies)
Discussion started by: Boost
5 Replies
10. Shell Programming and Scripting
Hi everybody,
I must get trought a shell script 3 arguments.
1st argument = $1 (can take values REP1..4)
2nd argument = $2 (can take values A..Z)
3rd arguement = $3 (also can take values A...Z)
I've written this code :
#!/bin/bash
if
then
liste=/data/folder1
echo... (6 Replies)
Discussion started by: shellX
6 Replies
LEARN ABOUT CENTOS
execute
EXECUTE(7) PostgreSQL 9.2.7 Documentation EXECUTE(7)
NAME
EXECUTE - execute a prepared statement
SYNOPSIS
EXECUTE name [ ( parameter [, ...] ) ]
DESCRIPTION
EXECUTE is used to execute a previously prepared statement. Since prepared statements only exist for the duration of a session, the
prepared statement must have been created by a PREPARE statement executed earlier in the current session.
If the PREPARE statement that created the statement specified some parameters, a compatible set of parameters must be passed to the EXECUTE
statement, or else an error is raised. Note that (unlike functions) prepared statements are not overloaded based on the type or number of
their parameters; the name of a prepared statement must be unique within a database session.
For more information on the creation and usage of prepared statements, see PREPARE(7).
PARAMETERS
name
The name of the prepared statement to execute.
parameter
The actual value of a parameter to the prepared statement. This must be an expression yielding a value that is compatible with the data
type of this parameter, as was determined when the prepared statement was created.
OUTPUTS
The command tag returned by EXECUTE is that of the prepared statement, and not EXECUTE.
EXAMPLES
Examples are given in the EXAMPLES section of the PREPARE(7) documentation.
COMPATIBILITY
The SQL standard includes an EXECUTE statement, but it is only for use in embedded SQL. This version of the EXECUTE statement also uses a
somewhat different syntax.
SEE ALSO
DEALLOCATE(7), PREPARE(7)
PostgreSQL 9.2.7 2014-02-17 EXECUTE(7)