I am a beginner (Just 2 days old ), i will really appreciate if you can solve my silly queries as below:
Lets say i write a script like this
Code:
#!/bin/bsh
clear
#to read name from keyboard
echo "your name please.."
read fname
echo "you just entered $fname"
exit 0
My environment is set to work in tcsh.
My query are:
a) how does placing !/bin/bsh as comment results in its execution as bsh shell? AS i am a beginner, i need to know if it is an exception ? how does placing a path as comment affects the execution of code.
b)If, say i place the path as second line of my comment. assume my first two lines are as below
#just comment
#!/bin/bsh
The code executed, but i also get some errors which says command not found.
c) Is it compulsorily to place "exit 0" at the end of every script? where should it be used?
In a Bourne shell script, I often come across statements involving `sh -c`. I was not able to make out if any reason is there behind that.
example:
echo `sh -c 'date'` killing all server processes
Instead of the above, I can use
echo `date` killing all server processes.
Is there any... (1 Reply)
Hi All,
I am new to shell scripting.
I have a variable which holds a numeric value.I have to check whether this variable holds a value between(0- 8),(8-17)(17-24).How do i write this syntax using if in shell scripting.
Thanks
Vignesh (2 Replies)
I everybody!
I am trying to install the bsh shell on a SCO unix and i don't know how.
The deal is that i have an old SCO unix running with an old system made with cobol, so it works with shell menus and it use a variety of a shell called bsh (Business Shell) so i search for a package to install... (5 Replies)
hi,
I am new script learner,
so my basic doubt is ,
how to store value of any command in a variable example
$ ls | wc -l
i want to stote the output of this in a variable c.
so that i can use c in if else loop.
and when do we use " ` " symbol in script..
can anyone also tell for... (5 Replies)
Hi,
I have a requirement as below which needs to be done viz UNIX shell script
(1) I have to connect to an Oracle database
(2) Exexute "SELECT field_status from table 1" query on one of the tables.
(3) Based on the result that I get from point (2), I have to update another table in the... (6 Replies)
Lets say I wanted to create a script that would show what people are doing on my machine using the w command and refresh in about 6 seconds. What would be the easiest way to do this? I pretty much want the script to loop until I stop it.
I'm using the BASH shell by the way.
Help is appreciated.... (1 Reply)
Im trying to make a script that simply adds a word to the last available line in a txt file without overwriting any previous lines.
Ive googled this and there are great examples but no one explain what each function does, and i dont entirely understand how it works.
Basically Im looking for... (7 Replies)
Hi All,
I have made a file file usercreate.sh & it has to run in tcsh env & needs some path to be set.
my script is as below.
##########################
#!/bin/csh
setenv PATH "/usr/lib/java/class"
setenv LD_LIBRARAY_PATH
###########################
but when i am ruuning my script... (1 Reply)
Hi,
I need to query Oracle database for 100 users. I have these 100 users in a file. I need a shell script which would read this User file (one user at a time) & query database.
For instance:
USER CITY
--------- ----------
A CITY_A
B CITY_B
C ... (2 Replies)
ATF-SH(1) BSD General Commands Manual ATF-SH(1)NAME
atf-sh [-s shell] -- interpreter for shell-based test programs
SYNOPSIS
atf-sh script
DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library.
atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter-
preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not
use any non-standard extensions.
The following options are available:
-s shell Specifies the shell to use instead of the value provided by ATF_SHELL.
ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes.
ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes.
ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a
specific interpreter.
EXAMPLES
Scripts using atf-sh(3) should start with:
#! /usr/bin/env atf-sh
Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode
the path to atf-sh in the script and then use the -s option afterwards as a single parameter:
#! /path/to/bin/atf-sh -s/bin/bash
ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts.
SEE ALSO atf-sh(3)BSD September 27, 2014 BSD
07-20-2011
), i will really appreciate if you can solve my silly queries as below: