3
votes
2answers
234 views

less freezes at last line when paging output from a running command

I have a CLI app that produces lots of debug output and I have a really big need to search in the output. I'm using less for that but it freezes when I reach the last line with j or G. And it returns ...
1
vote
1answer
6k views

How to get variables from the command line while makefile is runing?

Such as in bash script: read -p "Only UI(y/n)" Temp_Answer. Is it possible to do this while Makefile is runing? Because I want to do different base on the $Temp_Answer (Y or N) in Makefile.
27
votes
3answers
76k views

Sort based on the third column

I'm facing a huge 4-columns file. I'd like to display the sorted file in stdout based on its 3rd column: cat myFile | sort -u -k3 Is that enough to perform the trick?
7
votes
1answer
890 views

Auto-Mounting CIFS Shares on Laptop

I've seen questions similar to this asked before in several variations, but I have yet to locate a satisfactory answer. Here's what I have: A highly mobile Debian laptop that switches networks ...
3
votes
0answers
75 views

How to use `smart-compile` without confirmation in Emacs

I'm using smart-compile in Emacs. It works fine, but if possible I want to omit the confirmation like Compile command: ruby foo.rb. How can I do it?
1
vote
0answers
1k views

Qemu: No file system could mount root (unable to mount roofs)

In Linux, I've created the root file system (rootfs) by following commands: dd if=/dev/zero of=ramdisk.img bs=1M count=4 mkfs.ext2 ramdisk.img sudo mount -o loop ramdisk.img rootfs sudo cp init ...
6
votes
3answers
1k views

Splitting the Home dir two different partitions

I run a Ubuntu desktop environment with two harddisks. A small SSD and a large regular disk. Currently i run a setup where my home drive is located on /home/name, but some folders e.g. Downloads ...
2
votes
2answers
179 views

Simple terminal emulator (themable) with mark-as-copy with 'universal' $TERM

I have a need for very simple terminal (no multiple tabs, no menu etc. - I use XMonad so splitting windows is not necessary as well). I tried to use xterm but unfortunately I need to be able to ...
0
votes
1answer
58 views

executing any program in mc ends putty session if not logged in with root

Maybe there is a simple-obvious solution for this but I dont know how to make mc to be able to execute programs when I press enter/double click on it and I am not logged in as root... the executable ...
3
votes
1answer
82 views

navigating nautilus tree using arrow keys

I use mostly command line tools, but sometimes browsing a directory tree is more easy using GUI. In PCManFM I could use the arrow keys to walk the tree and left arrow and right arrow would open a ...
1
vote
2answers
137 views

Removing “[crap-like-this]” from strings using bash parameter expansion?

If I have the following $STRING aaa.bbb.ccc.[ddd].eee.fff.[ggg].hhh is there any way, using bash parameter expansion, to echo the following aaa.bbb..ccc.eee.fff..hhh That is, remove all ...
3
votes
2answers
20k views

How to exit file reading mode in linux terminal?

I appologize if its something really stupid i am asking. But this is my first day on linux commands infact I dotn have linux right now I have just installed CYGWIN for my learning. SO my question is ...
0
votes
3answers
252 views

To find file received time using find command in ssh server

Below command gives syntax error fname1=abc.txt tim=`find /path/ -type f -name $fname1 -ls|awk '{print $8$9$10}'` Syntax Error The source line is 1. The error context is ...
5
votes
1answer
2k views

What happens to a continuing operation if we do ssh and then disconnect?

I am moving one directory to another using mv command. However, I was forced to shut down my computer, which means losing connection to the server. What happen to the mv command? Note: After I ...
-1
votes
1answer
196 views

Checking if folder exist using case/switch

Is it possible to use case to check if folders exist? I have these folders. I need to check if they exist then do something afterwards, I have 5 folders I need to check, and if it does exist, I ...
1
vote
2answers
4k views

I messed up my EFI boot, what do I do?

I have Debian Wheezy installed on my computer using EFI boot. It used Grub2 as the bootloader. I then decided to install Arch Linux, using EFI as well, on another partition and chose Grub bootloader ...
3
votes
1answer
256 views

Why starting firefox (from command line) in VM starts the firefox in the host machine and vice-versa?

I have a SLED 10 host machine and I am using a SLES 10 VM via ssh -X. When I start firefox in my VM using firefox & then it runs the firefox which is installed in the VM. So that's fine. ...
2
votes
1answer
2k views

Finding function parameters for functions in shared object libraries

I am currently fiddling around with some c libraries without documentation. I am wondering if it is at all possible to retrieve more metadata, such as parameters and return values, outside of what is ...
1
vote
1answer
54 views

Backup 'empty' parts of disk drive

I have a USB drive which has around 7MB of 'empty' space at its beginning. The first partition in MBR starts at 8225kB, according to Parted. How can I back up this space using something like dd? ...
0
votes
1answer
8k views

Why am I getting git error “remote: error: unable to create temporary file: No such file or directory” on push?

This problem is getting weirder. My original post follows, but here is the new thing I discovered: I executed git push and it gave me its usual error: Counting objects: 9, done. Delta ...
7
votes
2answers
598 views

what does a “deleted file” entry look like in the journal

I hope I've got this right: A file's inode contains data such as inode number, time of last modification, ownership etc. – and also the entry: »deletion time«. Which made me curious: ...
2
votes
3answers
767 views

Amazon EC2 micro instance large number of IO requests

I'm trying to understand why I have a huge number of EBS IO request on my Amazon EC2 micro instance. I launched the instance roughly 6 days ago and has racked up over 4 million IO requests so far. ...
1
vote
0answers
61 views

List Mails by subject

I'm writing a script to send mails from a mailbox on a remote server and a script to check if the mails are received at another remote server. For this I have configured mutt. What I now need is to ...
2
votes
1answer
2k views

undefined symbol in /usr/lib64/libGL.so.1 when using ssh

I frequently use ssh to a computer with redhat using the Y option so I can forward the windows. I always saw errors like this one /usr/lib64/firefox/firefox: symbol lookup error: ...
1
vote
0answers
156 views

Kernel IPsec SA database: FIFO instead of LIFO

When processing an IP packet, the kernel looks into the security policy (SP) database to determine whether it is to be protected with IPsec. If the identifiers of the packet (e.g. IP addresses, etc.) ...
1
vote
2answers
166 views

How to find a symlink when the location in which it was created is unknown?

I followed some slightly incorrect instructions to install my video driver. I executed this command blindly and don't know what directory I did it: sudo ln -s lib /usr/lib64 How can I find that ...
1
vote
2answers
269 views

Why do you need screen/tmux to keep a remote program running

When I ssh to a server and start a script that is supposed to run for several days, it stops executing some time after I log off. Why? I suppose the server runs 24/7. And what does screen/tmux do to ...
1
vote
2answers
142 views

Command working from CLI but not from script

I have a command that I use from the CLI to properly color files, folders, executables, etc. The command that I'm executing looks like this: test -r ~/.dircolors && eval "$(dircolors -b ...
2
votes
3answers
640 views

Emacs defaulting to emacs.d as a file

No matter where I am or how I open emacs, I get this message: File exists: /home/{user}/.emacs.d/ I then have to C-x C-f to get to the file I was trying to edit. What is going on here, and how do I ...
1
vote
0answers
3k views

How to install PHP 5.2.4 in CentOS release 6.5 (Final)?

Folks I need to install PHP 5.2.4 in CentOS release 6.5 (Final). My souces list are: # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of ...
2
votes
1answer
2k views

How to safely give non-root access to lib so that Catalyst hardware acceleration can function?

I've installed AMD Catalyst 13.8 BETA2 by following these directions. It works fine on the administrative user it was setup with, but a non-admin user gets the black screen on login. Non-admin user ...
8
votes
2answers
1k views

How do I edit a file as root?

Are there any special considerations to editing a file as root? What is the safest way to do this?
3
votes
1answer
731 views

Awesome WM tiles KDE networking and battery widget

I currently use KDE with Awesome WM. I got the KDE bar at the bottom hidden, but I can un-hide with with the cursor when I need to use the Plasma Network Manager. With KWin, they would appear like ...
2
votes
2answers
362 views

Display content of all currently detached screen

I have a few detached screens running. Now I’d like to see their current state for each of them. Currenlty, I do $ screen -r # look at the cryptic numbers $ screen -r <paste number one> # look ...
1
vote
1answer
6k views

How to use command line arguments in a shell script

I have a shell script and when invoking it ./test it asks for an input.I 've seen a quicker way just by writing at once ./test myInput ,how is that achievable?
1
vote
1answer
578 views

Fedora and Samba on VirtualBox

I have Linux Fedora 18 installed as a VM Guest. Trying to share directories from the Linux VM Guest box to the Windows 7 Host. (NOTE: VirtualBox is installed on Windows 7, and the Linux virtual ...
6
votes
1answer
2k views

ProxyCommand without socat, nc or Bash's TCP redirection?

ssh_config's ProxyCommand allows to establish some connection to a proxy prior to establishing the connection to the actual target machine. Simple question: how can I leverage the dynamic or SOCKS ...
0
votes
0answers
313 views

What are these strange characters in wifi-menu and alsamixer?

I have a fresh install of Arch. When I run wifi-menu or alsamixer, both of which I think use dialog, the display in the shell is not correct. The border, for example, is drawn with the wrong ...
5
votes
2answers
4k views

Kill disconnected SSH session running in `screen`

I'm always forgetting to logoff when ssh-ing somewhere. After I reopen my notebook, a screen window with this running ssh is unresponsive. I have to create another window, $ killall ssh, and only then ...
0
votes
0answers
23 views

File systems or services that facilitate self updating, variable symbolic links [duplicate]

I'm curious if there are any implementations provided as a file system or a service/daemon that facilitate the following: Symbolic links that can be specified to update if the target is moved ...
3
votes
1answer
8k views

Screen in bash script

I am using a bash script and I need to create a screen, execute a specific command with a memory limit and detach the screen. I have been trying something similar: #!/bin/bash for i in 1 2 3 4 5 6 7 ...
1
vote
0answers
69 views

Ubuntu Precise — suspend wedges GDM — help!

I've been a very happy Ubuntu user for many years, and worked my way past any number of problems, but I've never seen anything like this. Recently I got a new machine and installed 12.04 Precise on ...
7
votes
2answers
2k views

Re-execute fc command from history

Sometimes I am using the fc builtin in bash (3.2 if that matters), to recall commands from the history. This also offers the possibility to edit, before execution. For example, by typing fc 23 27 ...
3
votes
2answers
1k views

How to redirect http requests to local Apache server on internet connection lost?

I have a little Linux (Ubuntu based) server with 2 network cards, which acts as a router, dhcp, dns server, firewall, etc. One network card is connected to the LAN, while the other is connected to my ...
-1
votes
2answers
853 views

How to manipulate output from commands with shell scripts [closed]

Simple question, having a ls -l command it makes a list on the command prompt and if we want to manipulate it we pipeline it with awk command, for instance if we want to to show specific files. Is ...
0
votes
1answer
126 views

Could not get a command to work with bash -c

I am trying to execute a command to find out which process is listening on a particular port and i cannot get it to work if the command is passed as an argument to bash using bash -c netstat -tnlp ...
3
votes
2answers
674 views

Setting the TOPCOLORS environment variable

I don't seem to be able to find any examples on the Internet for this environment variable, which top will apparently read and use to display colours. How would I set this variable correctly so top ...
5
votes
1answer
5k views

Why does grep sometimes show the file name, sometimes not?

Can somebody please explain to me why I don't get the full path in example 1? example 1 - returning found line grep MODIFY /opt/releases/packages/cr_c_cr6/sas/dbms/*/*; outcome: MODIFY example 2 ...
2
votes
1answer
80 views

Matching two different lines that are at least N lines distant from each other

I would like to match files that contain try (in one line) and consecutive catch (in another line) at least N lines later (to find very long try-catches and try to get rid of them). I mean, the first ...
12
votes
2answers
7k views

How to show only installed packages by executing “aptitude search”?

After executing the aptitude search pattern command, I need to see only installed packages in the search result. Is there any way to do that?

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