01-19-2015
Add a printf() to show what poll() returns...
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1. Shell Programming and Scripting
Hi there,
I have a strange problem and I cannot figure it out what I am doing wrong here.
Let me try to picture it.
In principle it is prety straight forward, but something odd is happening.
Here is part of the input file snmp_alm.cfg:
... (2 Replies)
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2. Solaris
Hello everyone.
I beg your guys pardon please.
I try to ls -al in many path/directories. So, I put the code in text file which look like below;
ls -al /
ls -al /etc
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...
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3. Shell Programming and Scripting
Is it normal behavior for a shell script that terminates to terminate its parent shell when executed with the "." option?
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#!/bin/sh
if
then
echo "Bye."
exit 2
fi
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>./ex.sh
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4. Shell Programming and Scripting
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
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I've posted about this before, but only recently narrowed the problem down to a specific cause.
Ok, first of all, the behavior:
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cd ~/<TAB>
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7. Shell Programming and Scripting
This really puzzles me. The following code gives me the error 'expr: syntax error' when I try to do multi-line comment using here document
<<EOF
echo "Sum is: `expr $1 + $2`"
EOF
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8. Shell Programming and Scripting
Hi there,
I'm running into a very weird situation. Let's forget about the purpose of my initial script please. I noticed the bug whatever I'm trying to do.
I'm on an old server running bash 3.1.17.
Say we have the following script :
foo:~# cat /tmp/test
#!/bin/bash
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9. Shell Programming and Scripting
Look at the following data file(cou.data) which has four fields separated by tab.
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10. Shell Programming and Scripting
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
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LEARN ABOUT DEBIAN
explain_poll_or_die
explain_poll_or_die(3) Library Functions Manual explain_poll_or_die(3)
NAME
explain_poll_or_die - wait for some event on file descriptor and report errors
SYNOPSIS
#include <libexplain/poll.h>
int explain_poll_or_die(struct pollfd *fds, int nfds, int timeout);
int explain_poll_on_error(struct pollfd *fds, int nfds, int timeout);
DESCRIPTION
The explain_poll_or_die function is used to call the poll(2) system call. On failure an explanation will be printed to stderr, obtained
from the explain_poll(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_poll_on_error function is used to call the poll(2) system call. On failure an explanation will be printed to stderr, obtained
from the explain_poll(3) function, but still returns to the caller.
fds The fds, exactly as to be passed to the poll(2) system call.
nfds The nfds, exactly as to be passed to the poll(2) system call.
timeout The timeout, exactly as to be passed to the poll(2) system call.
RETURN VALUE
The explain_poll_or_die function only returns on success, see poll(2) for more information. On failure, prints an explanation and exits, it
does not return.
The explain_poll_on_error function always returns the value return by the wrapped poll(2) system call.
EXAMPLE
The explain_poll_or_die function is intended to be used in a fashion similar to the following example:
int result = explain_poll_or_die(fds, nfds, timeout);
SEE ALSO
poll(2) wait for some event on a file descriptor
explain_poll(3)
explain poll(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2010 Peter Miller
explain_poll_or_die(3)