Hello All,
I have a script that will email out if the email address is specified as parameter 1.
I am using ksh, and then tried the following :
email=$1
Following did not work, I am getting error
test -z $email
test ${email:=" ") -eq " "
test -n $email
test ${?email}
What... (4 Replies)
I am making a script to check the parameters, but it seems that I can't catch the parameters by loop.
$ cat sendmsg.sh
#!/bin/sh
## Parameter Check
i=0
max=$#
while
do
PARAM=$${i}
i=`expr ${i} + 1`
echo ${PARAM}
done
How can I get the $1, $2, $3 by loop and set their... (2 Replies)
I need to pass a parameter to a function in a script. My parameter is a string. When I display the parameter within my function, I only get the first word from string I pass in.
How can I make the function receive the whole string (and not terminate at the first space it encounters)?.
part of... (1 Reply)
I have a "find {start} -ls" command listing all files and dirs in on the whole filesystem.
As part of this it lists locations that contain temporary files and, sometimes when executing, it identifies a file but produces an ERROR when trying to list it.
ERROR thrown: find: bad status--... (2 Replies)
Hi,
I have a parameter which is a string:
set parameter = "string"
I would like to compare it to various strings inside an IF conditional:
if ($parameter == "string") then
bla bla bla
endif
but it doesn't work, and I have no idea why.
Thanks in advance,
Shira. :) (12 Replies)
Hi all,
I have four (4) different UNIX flavours and I want to know whether the following commands are correct with respect to wanting to check on what are my current kernel parameter settings.
I just want to clear the doubts hanging over my head whether the commands below are the right ones... (2 Replies)
Hi all
i need to check that if user has passed any input parameter while executing he shell script like
./test1.sh -a"-v"
then do smothing
if user execute the script without giving input paramater then
./test1.sh
then do something
how can we check this input parameter (6 Replies)
Hey I'm new in linux,
I'm looking for a code to check whether the parameter is a number or a string.
I have already tried this code:
eerste=$(echo $1 | grep "^*$">aux)
if
But it doesn't work.:confused:
Thanks (2 Replies)
I have a code which is using to find duplicates in a files based on column.Below is the same code which is used to find duplicates in my file based on column 1
awk -F'|' '{if (x) { x_count++; print $0; if (x_count == 1) { print x } } x = $0}' FileName >Dup_File.txt
But my requirement here is... (3 Replies)
Discussion started by: ginrkf
3 Replies
LEARN ABOUT PLAN9
test
TEST(1) General Commands Manual TEST(1)NAME
test - set status according to condition
SYNOPSIS
test expr
DESCRIPTION
Test evaluates the expression expr. If the value is true the exit status is null; otherwise the exit status is non-null. If there are no
arguments the exit status is non-null.
The following primitives are used to construct expr.
-r file True if the file exists (is accessible) and is readable.
-w file True if the file exists and is writable.
-x file True if the file exists and has execute permission.
-e file True if the file exists.
-f file True if the file exists and is a plain file.
-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 the same file as /dev/cons.
s1 = s2 True if the strings s1 and s2 are identical.
s1 != s2 True if the strings s1 and s2 are not identical.
s1 True if s1 is not the null string. (Deprecated.)
-n s1 True if the length of string s1 is non-zero.
-z s1 True if the length of string s1 is zero.
n1 -eq n2 True if the integers n1 and n2 are arithmetically equal. Any of the comparisons -ne, -gt, -ge, -lt, or -le may be used in place
of -eq. The (nonstandard) construct -l string, meaning the length of string, may be used in place of an integer.
These primaries may be combined with the following operators:
! unary negation operator
-o binary or operator
-a binary and operator; higher precedence than -o
( expr ) parentheses for grouping.
The primitives -b, -u, -g, and -s return false; they are recognized for compatibility with POSIX.
Notice that all the operators and flags are separate arguments to test. Notice also that parentheses and equal signs are meaningful to rc
and must be enclosed in quotes.
EXAMPLES
Test is a dubious way to check for specific character strings: it uses a process to do what an rc(1) match or switch statement can do. The
first example is not only inefficient but wrong, because test understands the purported string "-c" as an option.
if (test $1 '=' "-c") echo OK # wrong!
A better way is
if (~ $1 -c) echo OK
Test whether is in the current directory.
test -f abc -o -d abc
SOURCE
/sys/src/cmd/test.c
SEE ALSO rc(1)TEST(1)