2
votes
2answers
668 views

Unlock LUKS encrypted Debian root with key file on boot partition

I'm trying to decrypt the Debian root with a key file stored in the boot partition (decrypted partition). This will break the security, but it doesn't matter now. I have to conclude this successfully ...
2
votes
2answers
76 views

How to wrap the comma delimited values to the next line without disturbing the other fields using awk or ksh

I have the following input, in which some of the values are comma delimited. I would like decouple each value and print it in the new line. I tried many ways in awk, but no luck. If I have three ...
2
votes
1answer
750 views

How do I check the progress of Badblocks if it's running in the background?

I'm running a drive check on my unmounted USB3 drive with: sudo fsck.ext4 -cDfty -C 0 /dev/sda1 & However, I sent it to the background and would like to check its progress. It's been running on ...
2
votes
0answers
365 views

How do I backport Mesa on Debian Wheezy?

This post is continuing a previous one where I tried to compile Mesa 10.0.5: What are the required build dependencies of mesa for Debian-based distros? . Except that this time, I switched to another ...
2
votes
0answers
59 views

Create a notification on the screen initiated by root [duplicate]

I would like to give out a notification on screen by a script that is running by root on Ubuntu 14.04. I tried this: #!/bin/bash MAINUSER=$(cat /etc/passwd|grep 1000|sed "s/:.*$//g") su $MAINUSER -c ...
2
votes
1answer
537 views

Set system font in LXDE?

I want to set the system font in LXDE, but I can't find where the setting is. This is what the Font tab looks like in lxappearance. As you can see, there is no combo for selecting the font:
2
votes
0answers
318 views

Mint 17 Cinnamon: suddenly everything looks messed up [closed]

I'm kind of freaked out right now. Hopefully I can find a solution here. I am new to linux, I'm only using it for a couple days now, and something really strange happened. Basically, all of a sudden, ...
2
votes
2answers
2k views

Bash not equal string comparison

Why does this cause an infinite loop? #!/bin/bash while [[ "$(ipcs | awk '{print $2}')" != "Semaphore" ]]; do #Gonna get rid of the echo after working echo "$(ipcs | awk '{print $2}')" #I wanna ...
2
votes
4answers
524 views

How can I disable lightdm auto-login from the command-line when isn't possible to get a GUI session?

Suppose auto-login to a session is active in Ubuntu. So there will not be an opportunity to select a session (e.g gnome, unity, kde, etc). But if the environment is corrupted there is no way to escape ...
2
votes
1answer
1k views

Updating bash against shellshock on Linux Mint 16

Apparently the LM package manager person is on holiday, so even an up-to-date Mint 16 box is vulnerable to the original Shellshock CVE. How do you update such a system meanwhile?
2
votes
3answers
2k views

grep to find words with all vowels

Using grep -E and regular expressions I need to find words containing all of a group of characters in no particular order. For instance a word containing all vowels (aeiou) however the vowels can ...
2
votes
0answers
123 views

How do I execute a program in Xfce and make it use another xfwm4 theme other than the default one?

I want to run a python script (the one in the answer to Python - how to make transparent window with gtk.Window but not with Gtk.) that displays a transparent window. I'm running it from a bash script ...
2
votes
1answer
1k views

How to Mount a Drive with Right Filesystem?

I am trying to mount the device /dev/xvdc on my CentOS system. When I run an fdisk command I get: Device Boot Start End Blocks Id System /dev/xvda1 * 1 33 ...
2
votes
2answers
182 views

Merging two tables including multiple ocurrence of column identifiers

I would like to merge two tables: File 1: 1 today 2 tomorrow 3 red File 2: 1 a lot 1 sometimes 2 at work 2 at home 2 sometimes 3 new Desired output (file 3): 1 today ...
2
votes
1answer
88 views

feh: maintain zoom setting

When browsing through the images in a directory with feh, the magnification can be changed by use of the up/down arrow keys, but the setting is lost as soon as the next image in the series is loaded. ...
2
votes
2answers
75 views

How to make an infinitely executing command kill itself when certain conditions are met?

I'm running a command on command line which infinitely generates a certain data and I'm looking for a particular bit of data, so I used grep to find it. As soon as I get the data, I want the command ...
2
votes
1answer
367 views

How to print a bash variable that has an array as value

I wrote a script for my dwm statusbar. One part of it is finding the current cpu usage for every single core on my system. I figured out a way myself but I would need some help fixing a bug in this. ...
2
votes
2answers
151 views

How to combine arithmetic expansion and brace expansion? [duplicate]

Can peoples combine arithmetic expansion and brace expansion? $ for i in {$((1 + 1))..5}; do echo $i; done; {2..5} $ echo "bash laughs at me"
2
votes
1answer
256 views

Bash tab completion fails inside of command substitution

I've been using kill $(pidof ) to terminate programs for a while, and since last night, every time I try to use tab completion inside the $() it throws an error, bash: unexpected EOF while looking ...
2
votes
1answer
231 views

How does chroot's use of qemu for cross compile environments work?

To be able to do cross compiling there's a trick where you copy a static qemu binary into your <different-arch-root-to-be>/usr/bin and when you chroot into that filesystem, which has non-native ...
2
votes
4answers
474 views

How can I run a GUI on my server through SSH? [duplicate]

Most people want to be able to forward a window through ssh to the machine they're logging in from. I want to do the opposite. I'm on my desktop and I'm logging in via ssh to my server. The server is ...
2
votes
0answers
62 views

Unable to install Mysql

When I install mysql on my Centos, I get the following error: Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile Could not retrieve mirrorlist ...
2
votes
2answers
2k views

Installing Steam on Debian Wheezy

I downloaded the .deb file from the Steam website, but couldn't install it as it complained about having and "outdated" version of libc6. I look around and apparently I have to add jessie sources to ...
2
votes
1answer
499 views

How to connect to ssh-server running on embedded linux without /etc/passwd?

After installing ssh server on my remote machine (which runs embedded Linux), I tried to connect to ssh server from host machine but it failed. This is because I could not specify user account when ...
2
votes
2answers
347 views

How to clear the input in Bash

I have a bash script that is reading quite a bit of data /dev/random. I need the user to type randomly to seed the random daemon. However once the script completes everything typed will get dumped to ...
2
votes
1answer
643 views

Debian CLI torrent program through VPN

Has anyone successfully set up a CLI-only (no web UI's!) torrent client that can tunnel all of its traffic through a VPN? (Either by sending all traffic through a particular interface or a SOCKS ...
2
votes
2answers
540 views

running strace for specific period of time

How to run strace on a user process for specific period of time, say 1 minute, without terminating the user process and without using Ctrl+C? I want to create a script to automating strace execution ...
2
votes
1answer
796 views

/usr/sbin/sendmail: Permission denied

I am trying to setup the mail on my fedora 20. Every time I try to fire a test mail it tells me the permission is denied on /usr/sbin/sendmail. I checked the permissions and this is the output: ...
2
votes
3answers
75 views

Setting regions in a Screen session

I'm trying to get a 'Screen' with 4 tabs to split the screen into 4 regions. I'm running 4 instances of bfgminer. One instance per USB Hardware miner. Unfortunately it has to be this way. So I'm ...
2
votes
2answers
412 views

Merge csv files with conditions

I have 2 CSV files for each date (csv_2014_4_15 and csv_2014_4_16) , with basic structure and couple of unique columns as below. id,name,created_at,updated_at,other columns 12, joe, 2013-1-1 18:30, ...
2
votes
1answer
452 views

sudo -u git clone

I'm on Ubuntu server 14.04. I am using apache web server which runs as the www-data. I need to do git clone from a script (a web hook). This script will run with www-data user privilages. Running ...
2
votes
1answer
189 views

Accumulate Filename in a Log file using shell script

I have files with their names as ABC_-_123321.20140505_-_161500.CSV ABC_-_654145.20140506_-_135020.CSV String_-_SerialID.Date_-_Time.CSV StartDate, StartTime, EndDate and EndTime are given as ...
2
votes
1answer
70 views

Context of the matching regular expression

I'm using egrep with the -o option in order to just get the matching part of the line, e.g. cat /usr/share/dict/words | egrep -o '(aa|ii)' Now I'd like to see some context of the match, i.e. a few ...
2
votes
1answer
187 views

mixed raid types

I am about to reinitialise my (SW) raid array. Previously the array was raid5 with 4 disks. I've removed one disk in order to install a new additional (larger) drive. What I'd ideally like to do is ...
2
votes
2answers
258 views

can regex capture groups be used in GNU find command?

With the GNU find command (GNU findutils 4.4.2), a regular expression can be used to search for files. For example: $ find pool -regextype posix-extended -regex ...
2
votes
3answers
631 views

replace a character from a string that is in between first and second search using sed or awk

I need to replace _ (underscore) with ? (question mark) in a file containing email addresses. The file looks like below: EFT_020034-E015133 20140624 /ACC/EMAIL+test_1@mysite.com SHR ...
2
votes
1answer
159 views

List directories with dot directories last, then dot files

I'm aware of the ls option --group-directories-first but that's not exactly what I want to achieve. The output should be: (sorted by name ASC) Directories Hidden Directories Hidden Files
2
votes
0answers
98 views

CGroup Processes Not Terminated even when main process has been killed through Systemctl stop command

I am running systemctl stop process command for some process. Please find the output for systemctl status process below: Loaded: loaded Active: deactivating (stop-sigterm) CGroup: ...
2
votes
3answers
4k views

Comparing text files using Bash and AWK

I have two text files, and I want to compare their corresponding values according to their rows and columns. By comparing, I mean to check if the values are equal and echo if the values are the same ...
2
votes
2answers
3k views

Comparison of decimal numbers in bash

My search this morning was about how could I compare two decimal numbers in bash, and I came to this answser: How to compare to floating point number in a shell script. This one, however, doesn't ...
2
votes
0answers
141 views

Drive disappears from dev during ddrescue copy or testdisk recovery

I have been trying to recover data from a Seagate 7200.11 1.5TB drive (2 ext4 partitions_ for 3 days now, predominantly with ddrescue and testdisk, but because of some critical error on the disk ...
2
votes
0answers
1k views

mailx attachment behaviour between RHL 5 and RHL 6

We have a line of code that does this in ksh, to send a file as an attachment in email: uuencode <filename> <filename.txt> | mailx someone@somewhere.com In RHL 5.2 mailx sends ...
2
votes
4answers
493 views

Overwriting a Disk

Should I use: find / -type f -exec shred -uvz -nX or just good old dd if=/dev/urandom of=/dev/sda Is one faster or more secure than the other?
2
votes
2answers
24k views

Wireless connection not figuring in VMware Workstation 10(Kali-Linux)

I just installed kali-linux on my VMware workstation 10. I had to check for the wireless connection in the kali-linux. I tried to check for the wireless-network connection(WiFi);but,it was incorrectly ...
2
votes
3answers
235 views

Remapping a keyboard key to print ⸮ (irony mark)

I find myself using the irony mark ⸮ unicode U+2E2E (or ؟ unicode U+061F) in both mcabber and vim a lot. The old copy-and-paste antipattern is tedious so I thought I would rename one of the many ...
2
votes
3answers
210 views

Low level disk i/o on linux

Can a user level program do page level or block level I/O on SSDs? I've looked at disk devices, but am unsure if they provide this as they work only if the partition has a file system. UPDATE #1 I ...
2
votes
1answer
901 views

How can I resize my encrypted root and home partitions, to give root more space?

I need to enlarge my / (root) partition, I have a lot of space on my /home partition so how can I do this? The drive is encrypted with LUKS. My system is Fedora 20. I have another thread here which ...
2
votes
1answer
365 views

Is there a way to manipulate lines in logcheck rules before sending?

There are a few cases, such as netfilter logs, where it would be great if I could send the report logcheck is about to send through a filter. logcheck(8) doesn't seem to describe anything like this, ...
2
votes
1answer
2k views

ifup eth0 timeout during boot

I need to start eth0 network interface during boot, but only if cable is plugged in. I have following in my /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp ...
2
votes
1answer
2k views

Why can't I write on External Hard disk?

I am using Arch Linux. I am not able to write on my external hard disk. I have tried to change the permission manually through properties but not allowed to do so. How can I fix this problem? Here is ...

15 30 50 per page