12-25-2017
Is that only for that ssh command line, or for other commands / history lines as well?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have file named script1 as follows:
#!/bin/bash
count="0"
echo "hello"
echo "$count"
while
do
echo "$count"
count=`expr $count + 1`
done
-----------
when I run it, I get
./script1: line 9: syntax error near unexpected token `done'
./script1: line 9: `done'
I... (6 Replies)
Discussion started by: npatwardhan
6 Replies
2. Shell Programming and Scripting
hello everybody,
as many, I have a problem with a script...
I wrote a shell script in which I want to read a variable value. the problem is that I can't use the arrow keys.
Here is the script I use :
#!/bin/bash
stty erase ^H
read foune
echo "$foune"
exit 0;
the problem is... (2 Replies)
Discussion started by: Moumou
2 Replies
3. Shell Programming and Scripting
Hi All,
Linux lxs3er06 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:58:04 EST 2007 i686 i686 i386 GNU/Linux
Issue:
While executing shell scripts in bash shell, following error messages are thrown:
rm:command not found
On doing little investigation, I added '/bin' to $PATH and on doing echo... (9 Replies)
Discussion started by: a1_win
9 Replies
4. Shell Programming and Scripting
Hi,
This is my program.
#!/bin/bash
today=`date +"%b-%d-%Y"`
SERVICE="pbxconnect.php"
if ; then
echo "pbx program is running"
else
nohup php pbxconnect.php > logpbx-$today.txt &
fi
On executing using "sh myprogram.sh" , i get the following error.
myprogram.sh: line 4: '
My... (7 Replies)
Discussion started by: gskumar1234
7 Replies
5. Shell Programming and Scripting
PLEASE HELP!
NEED LINUX SCTIPT
Need to write a bash shell script to show information of employees of a department from a company data set.
The script should accept a project number (1/2/3/10/20/30) and output
* the name of the project
* the name of the manager of the controlling... (1 Reply)
Discussion started by: help123
1 Replies
6. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a bash shell script that presents work information of employees of a department from a company data... (1 Reply)
Discussion started by: help123
1 Replies
7. Shell Programming and Scripting
Hello All,
I am trying to gather output of df -k from remote server to local server using below line:
rsh <host> df -k >/tmp/space_remote_host.txt
Why above throws following error message:(I've deleted the IP address in below chunk)
connect to address ..: Connection refused
Trying... (2 Replies)
Discussion started by: InduInduIndu
2 Replies
8. Shell Programming and Scripting
Migrating Unix batch jobs (Korn Shell) running in HP-UX server to Linux environment.
Hi All
Please help me to understand the easiest way to migrate Kernel Shell scripts to Linux Bash. Also let me know
1. Any automated scripts or tools available for this.
2. Challenges and issues... (5 Replies)
Discussion started by: cpremesh
5 Replies
9. Shell Programming and Scripting
I am trying to initialize a file name in bash but not having much luck. For example, one of my bash scripts outputs a file named "FILE_1000G.vcf". I would like to rename FILE to match with the user's name. This is my code:
set -e
echo "Please enter your filename:"
read filename
rename... (6 Replies)
Discussion started by: Geneanalyst
6 Replies
10. UNIX for Beginners Questions & Answers
I have a csv file that looks like this
Name,Food,Sport
James,Curry,Gym
Darren,Pizza,Football
Jim,Fish,Hockey
James,Sushi,Tennis
My code looks like this
IFS=","
sed 1d $file_name | while read Name Food Sport
do
mkdir -p $Name
#echo "=================="
#echo "Name: $Name" (3 Replies)
Discussion started by: darklord173
3 Replies
LEARN ABOUT REDHAT
system
SYSTEM(3) Linux Programmer's Manual SYSTEM(3)
NAME
system - execute a shell command
SYNOPSIS
#include <stdlib.h>
int system(const char *string);
DESCRIPTION
system() executes a command specified in string by calling /bin/sh -c string, and returns after the command has been completed. During
execution of the command, SIGCHLD will be blocked, and SIGINT and SIGQUIT will be ignored.
RETURN VALUE
The value returned is -1 on error (e.g. fork failed), and the return status of the command otherwise. This latter return status is in the
format specified in wait(2). Thus, the exit code of the command will be WEXITSTATUS(status). In case /bin/sh could not be executed, the
exit status will be that of a command that does exit(127).
If the value of string is NULL, system() returns nonzero if the shell is available, and zero if not.
system() does not affect the wait status of any other children.
CONFORMING TO
ANSI C, POSIX.2, BSD 4.3
NOTES
As mentioned, system() ignores SIGINT and SIGQUIT. This may make programs that call it from a loop uninterruptable, unless they take care
themselves to check the exit status of the child. E.g.
while(something) {
int ret = system("foo");
if (WIFSIGNALED(ret) &&
(WTERMSIG(ret) == SIGINT || WTERMSIG(ret) == SIGQUIT))
break;
}
Do not use system() from a program with suid or sgid privileges, because strange values for some environment variables might be used to
subvert system integrity. Use the exec(3) family of functions instead, but not execlp(3) or execvp(3). system() will not, in fact, work
properly from programs with suid or sgid privileges on systems on which /bin/sh is bash version 2, since bash 2 drops privileges on
startup. (Debian uses a modified bash which does not do this when invoked as sh.)
The check for the availability of /bin/sh is not actually performed; it is always assumed to be available. ISO C specifies the check, but
POSIX.2 specifies that the return shall always be non-zero, since a system without the shell is not conforming, and it is this that is
implemented.
It is possible for the shell command to return 127, so that code is not a sure indication that the execve() call failed.
SEE ALSO
sh(1), signal(2), wait(2), exec(3)
2001-09-23 SYSTEM(3)