I have to write a shell script that takes a number as input , like 123
and the output will be 6 ,i.e the output will be the sum of digits of the input.
I have an idea as follows,
Code:
echo "123"|fold -1|tr '\n' '+'|bc
But the problem is after " echo "123"|fold -1|tr '\n' '+' " the output is 1+2+3+ which is not working with bc.
Is there is any way to replace the last character of a line to "\n" ???
Thanking You ,
M.Choudhury
Last edited by Franklin52; 07-07-2011 at 04:26 AM..
Reason: Please use code tags for code and data samples, thank you
I have a text file and every line ends in
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|^^^^
I need to use sed to make all lines end it
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The code i was using is:
cat FILE | sed 's/\^\^\^/\^/g'
But then they threw that curveball at me. Also is there a way to... (2 Replies)
Hi All,
I don't know what I am doing wrong in the regex below.
I have the following string:
31000000010201005181121360000000100000000003000000YYY-YYY-YYY-20100518-104139.txt.YYY
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cat input.txt
agsbdafgd
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ahrbrwerg
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Can anyone post the sed command to do that? (2 Replies)
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Hello.
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Hi,
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Hello All,
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Discussion started by: Ophiuchus
5 Replies
LEARN ABOUT FREEBSD
atf-sh
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
07-07-2011
