TEST(1) General Commands Manual TEST(1)NAME
test - condition command
SYNOPSIS
test expr
DESCRIPTION
test evaluates the expression expr, and if its value is true then returns zero exit status; otherwise, a non zero exit status is returned.
test returns a non zero exit if there are no arguments.
The following primitives are used to construct expr.
-r file true if the file exists and is readable.
-w file true if the file exists and is writable.
-f file true if the file exists and is not a directory.
-d file true if the file exists and is a directory.
-s file true if the file exists and has a size greater than zero.
-t [ fildes ]
true if the open file whose file descriptor number is fildes (1 by default) is associated with a terminal device.
-z s1 true if the length of string s1 is zero.
-n s1 true if the length of the string s1 is nonzero.
s1 = s2 true if the strings s1 and s2 are equal.
s1 != s2 true if the strings s1 and s2 are not equal.
s1 true if s1 is not the null string.
n1 -eq n2
true if the integers n1 and n2 are algebraically equal. Any of the comparisons -ne, -gt, -ge, -lt, or -le may be used in place of
-eq.
These primaries may be combined with the following operators:
! unary negation operator
-a binary and operator
-o binary or operator
( expr )
parentheses for grouping.
-a has higher precedence than -o. Notice that all the operators and flags are separate arguments to test. Notice also that parentheses
are meaningful to the Shell and must be escaped.
SEE ALSO sh(1), find(1)TEST(1)
Check Out this Related Man Page
TEST(1) General Commands Manual TEST(1)NAME
test, [ - test for a condition
SYNOPSIS
test expr
[ expr ]
OPTIONS
(none)
EXAMPLES
test -r file # See if file is readable
DESCRIPTION
Test checks to see if files exist, are readable, etc. and returns an exit status of zero if true and nonzero if false. The legal operators
are
-r file true if the file is readable
-w file true if the file is writable
-x file true if the file is executable
-f file true if the file is not a directory
-d file true if the file is a directory
-s file true if the file exists and has a size > 0
-t fd true if file descriptor fd (default 1) is a terminal
-z s true if the string s has zero length
-n s true if the string s has nonzero length
s1 = s2 true if the strings s1 and s2 are identical
s1 != s2 true if the strings s1 and s2 are different
m -eq m true if the integers m and n are numerically equal
The operators -gt, -ge, -ne, -le, and -lt may be used as well. These operands may be combined with -a (Boolean and), -o (Boolean or), !
(negation). The priority of -a is higher than that of -o. Parentheses are permitted, but must be escaped to keep the shell from trying to
interpret them.
SEE ALSO expr(1), sh(1).
TEST(1)
Hi, I tried locating my book for the keyword to test whether the file is a binary file but I can't find it under test.
Anyone any idea what the key letter is ?:( (8 Replies)
Hi
I want to group
like this but syntactic is not right ...
Thanks
if
Like this below does not work properly ..
if
then
:
else
usage
exit 1
fi (5 Replies)
Excuse the terrible title.
I have a text file of 1..n lines, each one containing at least one string between parentheses. Within each string, there is one or more strings separated by commas. I need to extract each string, thus:
input file:
(THIS,THAT)
(THE,OTHER)
(THING)
(OR,MAYBE)... (6 Replies)
Hi,
Suppose in some directory (/APPS/TEST) I have a file ABCTEST.csv. I want to write a IF condition in which I want to check if filename contains the string ABC then I will do certain operations .
I have a variable having value as /APPS/TEST/ABCTEST.csv
How Can I achieve this...please... (14 Replies)
Hi guys,
For some reason the terminal on my mac does not let me run string manipulations commands using the expr command. I'm not sure how to fix this so I'm requesting a "work-around" to using the expr command...
This is the string I'm working with:
"neo_opls01_1.log"
And I'm trying to... (9 Replies)
Hi,
I searched in the forums, but I didn't find a good solution. My problem is:
I have a string like "TEST.ABC201005.MONTHLY.D101010203".
I just want to have the string until the D100430, so that the string should look like: "TEST.ABC201005.MONTHLY.D"
The last characters after the D can be... (8 Replies)
Hello Friends,
I have written a code on a Linux box, however, am getting issues while running it on a Solaris server. The issue with Sed command is sortd out, however, am still lokking for solutions with expr command. Here is the issue,
Linux :
bash-2.03$ expr match singh@test.com... (10 Replies)
"Both cases have to be true for the expression to evaluate "true". is that not so.
the following code does a read from a txt file, an then suppose to do the deletion ,but although the condition exists, its not performing the deletion
&&
echo "\n\t Deleting printer ${prt} !!!"
if !... (5 Replies)
Hello! I know I must take the efforts of learning C..! I need to recompile a binary with the following at the beginning: test if a file exists, remove it and exit. All in "C". As simple as this in sh:
file=/tmp/filename
if ; then
rm -f $file
exit 0
fi
Thanks! (8 Replies)
shell scripting
From the given input file i want the output (shown below) which is the values of statements starting with Haripin loop and Muti-loop in each structure with its dG no. In input file they are shown in bold case. (original input file is a big one consists of n structures with n... (14 Replies)
Hi all,
I have little working knowledge in unix shell scripting. I have a requirement where i need to pull out some data in between the strings in the file.
Input:
TEST
a
a
c
f
d
TEST
f
e
g
g
TEST
Output: (7 Replies)
Hi I have data in the below format in two columns in excel which i will copy to notepad.
test as rec1, string
test as rec2, byteint
test as rec3, string
update date as test, datetime
name as tes2 string
I need to add trim function on all the string columns and keep the remaining... (10 Replies)