17
votes
2answers
12k views

What is the difference between interactive shells, login shells, non-login shell and their use cases? [duplicate]

Possible Duplicate: Difference between Login Shell and Non-Login Shell? I have been looking at /etc/profile. bash.bashrc to see how they are run, and notice that some are executed by ...
2
votes
0answers
245 views

K800 USB Wireless Keyboard - keyboard repeat rate intermittent problems

Any advice as to how to debug this: My K800 USB Wireless Keyboard's repeat rate intermittently stops working. It will start behaving erratically and when holding a key down it will either not repeat ...
6
votes
1answer
617 views

inittab '-' character in process field

I have a an inittab file with the following entry: console::askfirst:-/bin/ash According to this Man page a '+' character in the process field means init will not do utmp and wtmp accounting ...
4
votes
2answers
823 views

Help with unzipping a .dd.gz, possibly corrupted

I recieved this file that I was told was a copy of a hard drive (or disk). The file is "sheeva-mem.dd.gz". I tried to unzip the file in a linux Fedora machine. This yielded "unexpected end of file". ...
17
votes
3answers
39k views

Can't ifdown eth0 (main interface)

I can't ifdown an interface on a Debian 6.0.5 box; user@box:/etc/network$ sudo ifdown eth0 && sudo ifup eth0 ifdown: interface eth0 not configured SIOCADDRT: File exists Failed to bring up ...
4
votes
1answer
272 views

detect if key is pressed from script

I would like to detect if a key is being pressed when running a script. I have the following script: #!/bin/bash sleep 0.5 xte 'str sometext' I run this script using a shortcut to paste "sometext" ...
2
votes
1answer
2k views

Installing jdk7 on Debian server via SSH

Currently, I'm trying to launch a java program on a server. The server is launched on my virtual machine (VirtualBox) and controlled over SSH. Its OS is Debian. So, in order to launch my program I ...
2
votes
1answer
92 views

What is Unix for the OpenVMS DUMP command?

In OpenVMS the DUMP command: Displays the contents of a file, a directory, a disk volume, a magnetic tape volume, or a CD-ROM volume in decimal, hexadecimal, octal format, ASCII, or formatted ...
6
votes
1answer
1k views

Only one file name allowed error

Sometimes I forget to do sudo vim and open files to which I don't have write permission. I saw this post and it was really helpful. When I did :w !sudo tee % it asked me for a password and then the ...
2
votes
2answers
424 views

Why sudo timestamp is not updated when NOPASSWD is set?

I've set up sudo not to prompt for password by editing the sudoers file: myuser ALL=(ALL:ALL) NOPASSWD: ALL And it works fine, running sudo with no password prompting. But when entering sudo -v I ...
2
votes
1answer
834 views

update mysql on debian

I'm trying to update Mysql on debian without success, and all tutorial on internet just fails. I got Debian 6.0.6 squeeze, my mysql version is mysql Ver 14.14 Distrib 5.1.63. I did apt-get update and ...
2
votes
2answers
1k views

Automatically include N latest kernel versions in GRUB / GRUB2 menu on kernel upgrade

What I like about Ubuntu is that the GRUB menu always allows me to pick the latest (default) or second-latest (etc.) kernel version at boot time. In Arch Linux, I can't do that by default. The only ...
7
votes
2answers
464 views

When is it useful to use “grep — SOMEPATTERN”?

So under Linux/AIX where ever.., when is it useful to use: grep -- SOMEPATTERN the Question is the "--" part. When is it usefull to use?
4
votes
1answer
473 views

How to rename all files and add image size to file name

I can`t make this work. I have a lot of images and i want to rename his name and append image size to name using exiv2 exiv2 pr * prints all info about file # exiv2 pr 9b523e5a002268fe5067a928 File ...
3
votes
5answers
5k views

How to detect dos format files in git bash

Git Bash is a nice bash shell you get in Windows as part of the installation of Git. It comes with other typical unix tools bundled inside, such as grep, sed, awk, perl. It doesn't have the file ...
4
votes
2answers
14k views

How can I detect that no options were passed with getopts?

I have this code - #getoptDemo.sh usage() { echo "usage: <command> options:<w|l|h>" } while getopts wlh: option do case $option in (w) name='1';; ...
5
votes
3answers
3k views

Test command in unix doesn't print an output

When I type this in the terminal test 4 -lt 6 I don't get any output. Why not? I need that 0 or 1
6
votes
3answers
1k views

Equivalent of date --reference in Solaris

The GNU implementation of the date command has a nice feature to show the date of the last modification of a reference file. Then using the +FORMAT parameter it's easy to get the date in any format, ...
14
votes
7answers
21k views

Kill many instances of a running process with one command

This is one of the questions that has troubled me often. Suppose I have thousand or more instances of any process(for e.g. say the process vi) running. How do I kill them all in one single shot/one ...
1
vote
3answers
250 views

User's name appears as “bash-3.0” on SSH shell

I am working on a Redhat server and one of the users' names appears as "bash-3.0" on the "SSH Secure Shell Client." His name is appearing correct under /etc/passwd. How could this happen? How can I ...
4
votes
0answers
629 views

How to set up an encrypted directory to be mounted only during samba access?

(This is not about restricting client access, for which ext3 permissions do the trick) I'd like to encrypt the data on my NAS drive (Buffalo LinkStation Pro with SSH access enabled, if that matters) ...
2
votes
1answer
613 views

Double SSH tunnelling for SMB shared folder

I am actually working from PC1 (using Mac OSX) on a distant computer(Linux) PC2 using SSH. This distant computer PC2 does not have any connection to Internet but is in a network with a PC3 (Windows ...
2
votes
1answer
3k views

Backspace, del, arrow keys not working with interactive programs in Tilda

I currently run Openbox on a light netinstall of Debian. In Tilda, when I use a program like nslookup or winexe, some of my keys do not work properly. Backspace generates ^? Up generates ^[[A ...
3
votes
2answers
4k views

What does gpg error code 2(GPG_ERR_UNKNOWN_PACKET) mean?

I am tasked to explain the variation of gpg errors that happened in one of my batch script. Currently when I perform gpg decrypt for a specified file it returns 2. The problem with this is when I ...
1
vote
1answer
247 views

How to turn off lines under entire text in Kate editor?

After a recent upgrade on Kubuntu, Kate editor (v3.8.5) shows odd lines under the entire text of previously created simple text files. New files usually have only the first line underlined. Maybe if I ...
2
votes
1answer
606 views

Inconsistent behaviour of “wmctrl -i -a <WIN>”

I'm trying to use dmenu and wmctrl to write a script that would present to me a list of all currently open windows and then switch to the one I select. It looks something like this: Now, I'm using ...
2
votes
0answers
351 views

Samba 3 on Arch Linux, streams_xattr behaviour

I'm running Samba 3.6.8-1 on my x64 Arch Linux installation. I recently decided to have my samba share support NTFS's Alternate Data Streams by using streams_xattr or streams_depot. With streams_xattr ...
3
votes
1answer
2k views

Ubuntu 12.04: Random freezes

I get random freezes with Ubuntu 12.04 (kernel 3.2.0-31). The entire system freezes, mouse pointer doesn't move, keyboard input doesn't work. I'd say this happens about once per week on a system that ...
2
votes
0answers
497 views

Why if I don't disable nm-applet and xfce4-volumed my startup slows down?

I'm running Xubuntu 12.04, and after I ran the update, my login started slowing down big time. I've dabbled a little bit with the programs in Settings -> Settings Manager -> Session and Startup, and ...
11
votes
3answers
11k views

What is the difference between grep -e and grep -E option?

I am trying to understand the difference between grep -e and grep -E. Now from grep manpage I got: -E, --extended-regexp Interpret PATTERN as an extended regular expression (see below). ...
11
votes
1answer
2k views

Reusing ssh session for repeated rsync commands [duplicate]

Possible Duplicate: Using an already established SSH channel I have a remote server accessible via a chain of SSH proxies. The resulting channel is wide and fast enough, but setting it up ...
3
votes
0answers
284 views

Bad HD video deinterlacing processing

I have Ubuntu 12.04 32-bit with Unity. My system configuration is: CPU: Core 2 Quad Q6600 (2.4 GHz) RAM: 8192 Mb DDR2 Kingston Video: Palit GeForce GTX 260 216 SP, and my screen resolution is ...
2
votes
2answers
5k views

How can I install php5-curl on Ubuntu 12.04 LTS (GNU/Linux 3.2.0-24-generic x86_64)

I have a working server running Ubuntu 12.04 LTS (GNU/Linux 3.2.0-24-generic x86_64), including apache and php. Now I want to add curl support for php by running this: apt-get install php5-curl ...
2
votes
2answers
9k views

How to remove root password on Debian?

I'm running Debian in a virtual machine and for convenience I would like to remove the password on root (since it doesn't really matter what happens to this box). Internet hasn't been too helpful on ...
21
votes
3answers
7k views

When should I use a trailing slash on a directory? [duplicate]

Possible Duplicate: How linux handles multiple path separators (/home////username///file) Most commands I use in linux behave exactly the same whether I include the trailing slash / ...
1
vote
0answers
2k views

hda-codec and hda-intel issues

I use Arch Linux 3.5.6-1-ARCH and since ever I get a lot of those error messages in dmesg on my HP Pavilion dv6 (pure systemd): [ 72.137821] hda-intel: spurious response 0x0:0x0, last cmd=0x370100 ...
2
votes
2answers
1k views

Filesystem type on Solaris 5.10

How can I get the file system type for each device on Solaris 5.10? I tried mount with no args but that only listed each mount point, similar to df. Also, how can I find where a specific directory ...
56
votes
2answers
3k views

Clear / erase a mistyped invisible password on a shell / terminal in Linux

One thing that annoys me using Linux's terminal is when I have to type a invisble password, like when you run ssh. Sometimes I mistype one or more letters and then I have to press backspace key a few ...
3
votes
1answer
5k views

The simplest method to count lines matching specific patterns, including '0' if line is not found?

I have very big logs (several gigabytes per day), that can (but do not need to) contain specific lines. I have to count the number of occurences of every one of these lines on a daily basis. I have a ...
7
votes
2answers
1k views

What are the ramifications of setting the hostname?

I have several Amazon EC2 servers and I'm using Chef to manage the configuration. I'd like to set the hostname so that the default bash prompt is more helpful. Right now after launching a new server ...
4
votes
1answer
1k views

Install only a few GNU coreutils?

Is there a way to build and install only a few of the GNU coreutils? The README in coreutils-8.19.tar.xz lists 100-odd, but the INSTALL doesn't say how to install only a few, and the Makefile is (to ...
8
votes
1answer
3k views

Tmpfs only with RAM

How to be sure that a tmpfs filesystem can only deal with physical and it's not using a swap partition on disk ? Since i have a slow HDD and a fast RAM i would like, at least, giving higher priority ...
6
votes
2answers
3k views

Is there an easy way to create a FreeBSD rc script?

I have a FreeBSD jail in which I run a server using the command: /usr/sbin/daemon /path/to/script.py At the moment I have to run this command every time I restart the machine and the jail starts. ...
6
votes
1answer
1k views

sorting threads in mutt

I'd like to have mutt sort messages newest first, and have threads displayed with the newest message at the top of the thread. Right now I have the message list in the correct order, but the ...
8
votes
1answer
2k views

How to make ghostscript not wipe PDF metadata

Ghostscript wipes the PDF metadata like author, title, subject etc. How can I tell ghostscript not to touch the metadata? I invoke it as follows: gs \ -dBATCH \ -dNOPAUSE ...
2
votes
1answer
662 views

Which filesystem to use when a samba share should allow for NTFS encryption?

I'm using a NAS (Buffalo LinkStation Pro with SSH access, if that matters) which runs Linux (2.6.31.8 #1 Fri Jun 8 11:07:30 JST 2012 armv5tel GNU/Linux, with smbd --version = Version ...
2
votes
1answer
180 views

How to find files compared to the time of a specific file

How can I search for files that were modified or changed 5 minutes before and 5 minutes after, a certain file. I have tried mint@mint ~/Desktop $ touch -t 201210101315 /tmp/timestamp mint@mint ...
1
vote
0answers
93 views

how to open a knote file on knote

I was wondering if there is any way to open a knote file within knote. There is a knote save option but I am not sure how to open one. Any ideas? Any other program that could open .ics files?
11
votes
3answers
5k views

How does “cp” handle open files?

I'm having two separate directories. The user loads a file into the first. Theres a cronjob running in the background which copies the files every 5 minutes over to the second directory. What happens ...
4
votes
3answers
14k views

How to create Local Repositories in RHEL

I need to create a local repository in RHEl 5.5. i386 Because when I type some command in terminal it say that RHEL is not subscribed with RHN which is true. I took it from friend. So can someone ...

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