Without grep, I'd like to make a test condition so that any a word that does not have the successive letters car in it will be echoed. for example, bluecar will contain "car" so it will show up as a no
yes
this variable contains "car" so I want it to print nothing. However, I can do this by using *car* but that appears to grab any letters c a r and not the successive letters car. Is there any way to do this with a test condition?
Last edited by Scrutinizer; 07-17-2015 at 03:37 PM..
I'm new to scripting and I need help with a bourn shell script. What i'm trying to do is a test condition where "if the time is within 2 hours, it's true" and so on.
The time is in the following format
DATE=`/bin/date +"%Y%m%d%H%S"`
for example, 20060907152000.
So, what the script first... (9 Replies)
Guys look at this:
i have to write a script that takes a file as an argument. The script should be able to determine what permissions the owner, group and everybody has for the file passed in. The output should be displayed similar to this.
READ WRITE EXECUTE
OWNER LEE.BALLANCORE YES YES NO... (9 Replies)
Hi ,
I have a doubt on condition test ( ] ). Pls refer blow program.
#!/bin/ksh
TEMP=
if ;then
echo $TEMP
else
print 'invalid option'
fi
Above script's TEMP variable has no value so it gives "invalid option" as output. But I got an error before priting the string .
Result :
... (2 Replies)
Hi there,
When I try to do a condition on test:
$ str1=abcd
$ test $str1
$ echo $?
0
Is there anyway to display the answer to be 'TRUE' or 'YES'? rather than 0?
If so, how can I do it without using awk or sed. (2 Replies)
Hello,
what is the better and correct way to perform a comparison:
I have been using the following with no problems:
if ]
then ....
fi
I have seen this also used :
if
then ....
fi
When I try :
if
then ....
fi
I get an error like .... the test condition expects a... (4 Replies)
Hi there,
I tried to search for this almost everywhere, but didnt get any proper information on it.
What is the difference between
]
Some of the code works when I have only single condition i.e.
] && $dothis1 || $dothis2
But if i try to include another testcondition to the... (1 Reply)
I have a much larger script that takes an input file of hosts and determines if we support them and checks to ensure the FQDN coincides with our DNS. For instance, the hostname may return a different FQDN when passed to the "host" command, so I keep the value of the output of the "host" command... (4 Replies)
I want to locate directories that are upper, lower or have both upper and lower cases.
What I have is:
find /tmp/$var2 -type d' " ); && echo "host case is incorrect" || echo "host case is correct"
This actually is part of a larger script and it does work but the problem is that it... (3 Replies)
i have to test a condition for n times and if its value is greater than one each time for continuous 5 iterations it will take action
My Approach
run the same command 5 times in for loop and divert the output to a file and then read the values from file and use if else if and take action
... (1 Reply)
Discussion started by: abhaydas
1 Replies
LEARN ABOUT ULTRIX
test
test(1sh5)test(1sh5)Name
test - condition evaluation command
Syntax
test expr
[ expr ]
Description
The command evaluates the expression expr. If the value of expr is true, the command returns a zero exit status; otherwise, it returns a
nonzero exit status. The command also returns a nonzero exit status if no arguments are specified. The following primitives are used to
construct expr:
-r file True if file exists and is readable.
-w file True if file exists and is writable.
-x file True if file exists and is executable.
-f file True if file exists and is a regular file.
-d file True if file exists and is a directory.
-c file True if file exists and is a character special file.
-b file True if file exists and is a block special file.
-p file True if file exists and is a named pipe (fifo).
-u file True if file exists and its set-user-ID bit is set.
-g file True if file exists and its set-group-ID bit is set.
-k file True if file exists and its sticky bit is set.
-s file True if 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 non-zero.
s1 = s2 True if strings s1 and s2 are identical.
s1 != s2 True if strings s1 and s2 are not identical.
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, and -le may be used in
place of -eq.
These primitives can be combined with the following operators:
! unary negation operator.
-a binary and operator.
-o binary or operator (-a has higher precedence than -o).
( expr ) parentheses for grouping.
Note that all the operators and flags are separate arguments to the command. Note also that parentheses are meaningful to the Shell and
must be escaped. In the form of the command that uses square brackets ([]), instead of the word test, the brackets must be delimited by
blanks.
See Alsofind(1), sh5(1), test(1)test(1sh5)