02-24-2012
Works on every Linux I ve been using so far.
Cent OS 6.0 and Linux xxx 2.6.9-42.ELhugemem
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am very new to Unix and don't know much about it. I've been trying to create a menu and what I don't understand is how to execute a command once a user makes a selection. I have the menu set up. In fact, the following is the code that I have thus far:
#! /bin/csh
# This is the UNIX menu... (0 Replies)
Discussion started by: sinjin
0 Replies
2. Shell Programming and Scripting
Hi there. I'm trying to teach myself UNIX but the book I bought is a bit confusing. I'm trying out this exercise and I think I'm on the right track, but I'd appreciate any suggestions on how to improve what I have so far. Also, I'm not clear on how to use the read command to utilize the user's... (3 Replies)
Discussion started by: Jsmith
3 Replies
3. UNIX for Dummies Questions & Answers
the idea is to create script with menu and when option 1 or2 is pressed program should clear screan display info and get back to menu....
I managed some code but getting errors...
#!/bin/bash
choice1=ls -l|awk'{print $9 $1}'
choice2= ls | wc -c
choice3=exit
while
do
clear
echo "... (8 Replies)
Discussion started by: me.
8 Replies
4. Shell Programming and Scripting
Hopefully I'm in the right place. Im new to the forums and linux!
I'm looking to add a menu to my perl hangman game i have created. The menu will use user input for the desired option and then perform the operation indicated. I would like something along the lines of:
Welcome to Hangman... (1 Reply)
Discussion started by: jahburmski
1 Replies
5. Shell Programming and Scripting
hi all i am a newbie to this
is there any examples on creating a main menu with 3 sub menu
main menu -> option a , b and c
a menu -> option 1 ,2 and 3
b menu -> option 1 ,2
c menu -> option 1 ,2
i am getting headache as my code kept getting unexpected EOF
---------- Post... (0 Replies)
Discussion started by: chercm
0 Replies
6. UNIX for Dummies Questions & Answers
Dear Sir,
May I know how do I go about adding the following feature into the script below:
When user enter values other than 1,2,3,4,
a) Message “Wrong entry !!! Pls select 1,2,3 or 4” is displayed
b) The screen is cleared again and the menu is displayed.
#!/bin/bash
clear
var=1... (2 Replies)
Discussion started by: fusetrips
2 Replies
7. Shell Programming and Scripting
I am trying to make a calculator. The user Enters number 1, chooses and operation, enters number 2, then chooses another operation or for the answer to be displayed.
eg. 1 + 1 = or 1 + 1 + 2 + 1 =
Both of these should be possible.
#!/bin/bash
read -p "what's the first number? " n1... (3 Replies)
Discussion started by: redshine6
3 Replies
8. Red Hat
I ran the following command.
cat abc.c > abc.c
I got message the following message from command cat:
cat: abc.c : input file is same as the output file
How the command came to know of the destination file name as the command is sending output to standard file. (3 Replies)
Discussion started by: ravisingh
3 Replies
9. Shell Programming and Scripting
hi all
i am trying to get help with writing a script using case statement to display menu as
1) Authentication log
2) System log
3) Messages
4) Dmesg
5) Boot log
Q) Exit
When selecting the menu by 1 or 2 or 3 o 4 or 5, it should display the last 10 lines of the log files,
if... (3 Replies)
Discussion started by: renegade11
3 Replies
10. Shell Programming and Scripting
In the bash menu below if the variant that is inputted is in the format NM_004004.3:c.274G>T the below works perfectly. My question is if the variant inputted isNM_004004.3:-c.274G>T or NM_004004.3:+c.274G>T then the code as is will throw an error due to a biological issue. Is it possible to to... (1 Reply)
Discussion started by: cmccabe
1 Replies
LSNS(8) System Administration LSNS(8)
NAME
lsns - list namespaces
SYNOPSIS
lsns [options] [namespace]
DESCRIPTION
lsns lists information about all the currently accessible namespaces or about the given namespace. The namespace identifier is an inode
number.
The default output is subject to change. So whenever possible, you should avoid using default outputs in your scripts. Always explicitly
define expected columns by using the --output option together with a columns list in environments where a stable output is required.
Note that lsns reads information directly from the /proc filesystem and for non-root users it may return incomplete information. The cur-
rent /proc filesystem may be unshared and affected by a PID namespace (see unshare --mount-proc for more details). lsns is not able to see
persistent namespaces without processes where the namespace instance is held by a bind mount to /proc/pid/ns/type.
OPTIONS
-J, --json
Use JSON output format.
-l, --list
Use list output format.
-n, --noheadings
Do not print a header line.
-o, --output list
Specify which output columns to print. Use --help to get a list of all supported columns.
The default list of columns may be extended if list is specified in the format +list (e.g. lsns -o +PATH).
-p, --task pid
Display only the namespaces held by the process with this pid.
-r, --raw
Use the raw output format.
-t, --type type
Display the specified type of namespaces only. The supported types are mnt, net, ipc, user, pid, uts and cgroup. This option may
be given more than once.
-u, --notruncate
Do not truncate text in columns.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
AUTHORS
Karel Zak <kzak@redhat.com>
SEE ALSO
nsenter(1), unshare(1), clone(2), namespaces(7)
AVAILABILITY
The lsns command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux December 2015 LSNS(8)