Hi there,
I'm very surprised that I can't find this myself and I'm sorry to bother you with such a stupid question. I just want to write a test with one condition or another one. I want either the first argument to be equal to 'this' or the second argument to be equal to 'that'.
~$ cat test
((... (3 Replies)
I have a shell script, what i want to do is to use the test command and test it, but to be honest with you i really don't know,
can someone give me some advices and how to use it?
I have looked on the internet and saw some commands and scripts but the thing is where to start.....to test... (6 Replies)
if -o ]
then
echo "Expected valid value"
The above multiple if condition is NOT working in my script.
I am getting the error as '-a' not expected. Can anyone help with the syntax for this? (5 Replies)
This is the code:
while test 1 -eq 1
do
read a
$a
if test $a = stop
then
break
fi
done
I read a command on every loop an execute it.
I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test.
For example echo hello.
Now the... (1 Reply)
I want to create an IF condition with multiple condition, in the statement below I want to add OR EOF, can any one please advise how to do.
if } != $sample ] && ; then
echo .....
fi
code tags please (1 Reply)
I have written this script. This is used for creating a backup folder.
#!/bin/sh
#set -x
. /home/.profile
usage="Usage is $0"
usage="$usage "
# Use the getopt utility to set up the command line flags.
set -- `/usr/bin/getopt b: $*`
# Process individual command line arguments
while ;... (1 Reply)
Hi, guys.
In Linux Shell script, how can I check a string whether meets some conditions.
e.g.:
If a string str must start with a underscore or a alphabet, and it must contains at least one lowercase, one uppercase, one numeric and one punctuation, and its length must be more than 8 characters... (2 Replies)
Hi Guys,
I am new to shell script.I need your help to write a shell script.
I need to write a shell script to extract data from a .csv file where columns are ',' separated.
The file has 5 columns having values say column 1,column 2.....column 5 as below along with their valuesm.... (1 Reply)
Hi All,
I am trying to place one SQL query in Shell Script with Where Condition as Status='1' But after running the the script it is returning error as
SQL0206N "1" is not valid in the context where it is used. SQLSTATE=42703
The query is working fine in Data Base.
Please suggest... (1 Reply)
Discussion started by: sumanmca2006
1 Replies
LEARN ABOUT BSD
test
TEST(1) General Commands Manual TEST(1)NAME
test - condition evaluation utility
SYNOPSIS
test expression
DESCRIPTION
The test utility evaluates the expression and, if it evaluates to true, returns a zero (true) exit status; otherwise it returns 1 (false).
If there is no expression, test also returns 1 (false).
All operators and flags are separate arguments to the test utility.
The following primaries are used to construct expression:
-b file
True if file exists and is a block special file.
-c file
True if file exists and is a character special file.
-d file
True if file exists and is a directory.
-e file
True if file exists (regardless of type).
-f file
True if file exists and is a regular file.
-g file
True if file exists and its set group ID flag is set.
-h file
True if file exists and is a symbolic link.
-n string
True if the length of string is nonzero.
-p file
True if file is a named pipe
-r file
True if file exists and is readable.
-s file
True if file exists and has a size greater than zero.
-t [file_descriptor]
True if the file whose file descriptor number is file_descriptor (default 1) is open and is associated with a terminal.
-u file
True if file exists and its set user ID flag is set.
-w file
True if file exists and is writable. True indicates only that the write flag is on. The file is not writable on a read-only file
system even if this test indicates true.
-x file
True if file exists and is executable. True indicates only that the execute flag is on. If file is a directory, true indicates
that file can be searched.
-z string
True if the length of string is zero.
string
True if string is not the null string.
s1 = s2
True if the strings s1 and s2 are identical.
s1 != s2
True if the strings s1 and s2 are not identical.
n1 -eq n2
True if the integers n1 and n2 are algebraically equal.
n1 -ne n2
True if the integers n1 and n2 are not algebraically equal.
n1 -gt n2
True if the integer n1 is algebraically greater than the integer n2 .
n1 -ge n2
True if the integer n1 is algebraically greater than or equal to the integer n2 .
n1 -lt n2
True if the integer n1 is algebraically less than the integer n2 .
n1 -le n2
True if the integer n1 is algebraically less than or equal to the integer n2 .
These primaries can be combined with the following operators:
! expression
True if expression is false.
expression1 -a expression2
True if both expression1 and expression2 are true.
expression1 -o expression2
True if either expression1 or expression2 are true.
(expression)
True if expression is true.
The
-a operator has higher precedence than the -o operator.
GRAMMAR AMBIGUITY
The test grammar is inherently ambiguous. In order to assure a degree of consistency, the cases described in the IEEE Std 1003.2
("POSIX"), section D11.2/4.62.4, standard are evaluated consistently according to the rules specified in the standards document. All other
cases are subject to the ambiguity in the command semantics.
RETURN VALUES
The test utility exits with one of the following values:
0 expression evaluated to true.
1 expression evaluated to false or expression was missing.
>1 An error occurred.
BUGS
Named pipes are not implemented in 2.11BSD.
STANDARDS
The test function is expected to be IEEE Std 1003.2 ("POSIX") compatible.
7th Edition March 13, 1995 TEST(1)