10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
Im trying to write a Bash script that calculates the least common subnet for two address.
Theoretical: I have to change IP from decimal to binary, then apply XNOR on the two IPs.
I tried to write this:
#!/bin/bash
echo "Ebter the first ip"
read ip1
echo "Enter the second ip"
read... (7 Replies)
Discussion started by: Miron
7 Replies
2. UNIX for Dummies Questions & Answers
#!/bin/bash
if &&
then
echo "True"
else
echo "False"
fi
Hi everyone, I am new to UNIX, here I have a if statement elevating two boolean conditions. I thought the output should be True because there are + in the statement. But it turns out to be False.
Can anyone... (3 Replies)
Discussion started by: mryuyu1111
3 Replies
3. Shell Programming and Scripting
hi, im learning python language. and my teacher gives me this question on class:
Boolean expression :
not (p or not q)
what is the correct answer for that? i still dont understand, and please give me a link for a new beginner in python to learn.
thanks (1 Reply)
Discussion started by: jazzyzha
1 Replies
4. Shell Programming and Scripting
Dear all,
IT seems to be rather small issue, but is not resolved. What Google suggest does no work..!
#!/bin/bash
date
jobNo=$(awk '/Jobs with... (4 Replies)
Discussion started by: emily
4 Replies
5. Shell Programming and Scripting
Can someone, please, help me to make this condition valid/accepted in bash?
I really cannot.
I'm stuck with the brackets...
This one tells me: missing `]'
if ]; then
# NOTIFY ERROR...
fi
And... I'd also appreciate a link to bash documents that explain these things. All... (2 Replies)
Discussion started by: mamboknave
2 Replies
6. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
Im experimenting with if expressions for an assignment. What i want to do is check if an input of read x y z will be checked against x for 1-999 for y for and for z for 1-999. Am i doing this right? or perhaps you could tell me... (0 Replies)
Discussion started by: Ren_kun
0 Replies
7. UNIX for Advanced & Expert Users
I was reading this find guide and I saw something with the -and option that I don't think is correct. Do you need the -and option in this?
$ find /mp3-collection -name 'Metallica*' -and -size +10000k I found my file that was bigger than 500 MB with and without the -and option.
~ $ find /... (1 Reply)
Discussion started by: cokedude
1 Replies
8. Shell Programming and Scripting
Hi everybody:
I'm working on a script to send emails with logs attached based on one single rule..."check if the number of errors has increased since the last time the script ran"
Basically what my script does is read from a previous file with the last trace of errors the previous error... (3 Replies)
Discussion started by: hyunkel_01
3 Replies
9. Shell Programming and Scripting
Hi there,
Sorry if the title doesn't mean much to you, I don't know how to sum up my pb in one line.
I'd like to set a value to 0 or 1 depending on the result of a comparison. Here's what I do:
supernova:~# a=
supernova:~# isempty=$(] && echo 1 || echo 0)
supernova:~# echo $isempty
1... (4 Replies)
Discussion started by: chebarbudo
4 Replies
10. Shell Programming and Scripting
I have a file coming in with many columns, but the first character of the the coumn is a record type, if I wanted to get a true/false kind of response as to whether it contains at least one of each type of record how would be best?
sed -e '/01/!d; /02/!d; /03/!d; /04/!d' datafile
returns... (4 Replies)
Discussion started by: badg3r
4 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