I need the line printed with echo to append to eof of to exactly line, am i able to do that?
i mean
echo "sysctl -w lalala=1" > to end of file /etc/sysctl.conf
or to the 21st line, if the line exist, open new line and insert text there.
Thx.maybe i'm in wrong topic but anyway... (2 Replies)
Hi,
Thanks in advance.
i need to kill a unix background running job after that job process completes.
i can kill a job by giving the following unix command
kill -9 processid
how to kill the job after the current process run gets completed ?
Appreciate your valuable help.
... (1 Reply)
Im trying to execute application and its return code is below
IF Status code=o
echo "........"
else Staus Code =-2 DJRE
then echo "......"
Can any one help me how to handle the status code and echo some message. (12 Replies)
hello everybody!!
i want to post a question!
is there any way to get process status using C commands?
To be more specific, i want to know whether a process is running or is stop or killed.
thanks in advance! (3 Replies)
The problem i am encountering is the process is getting killed before it dispalys the details.The details are displayed using printf.I created a new buffer for printing the details using setvbuf function call instead of output buffer.This is not working.The thing is,killing of the process must be... (1 Reply)
All,
I have fair amount of knowledge about shell scripting, but only liitle on system administration.
I would like to know how to analyze whether the particular linux process is alive or not ? If it is alive, will it affect the performace of other process ?.
Also is it still consuming... (1 Reply)
Hi,
i am witing a function in a shell script which will echo the file name and witre in to the new line, but i dont get expected results. The below is my code
#!/bin/bash
DATE=$1
myview(){
base_name=$1
echo -ne "${base_name}${DATE}">> /path/to/file/txt
}
myview sample3030
myview... (5 Replies)
Looking to add text to a file, example
File example;
nodegroups:
check-hosts: L@host.domain.com,host2.domain.com,host3.domain.com
I need to take a file with a one line list of hosts separated by commas
host.domain.com,host2.domain.com,host3.domain.comand prepend the string " ... (6 Replies)
Discussion started by: bash_in_my_head
6 Replies
LEARN ABOUT ULTRIX
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)