Bash is the shell used in Ubuntu's command-line interface.

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type command in bash

I'm learning bash and while trying the "type" command with an argument like "cd" (type cd)which should return cd is a shell builtin but it throws no such file or directory. What could be the ...
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2answers
114 views

sudo dpkg fails when trying to install wifi driver (on mac)

I finally created a persistent USB that runs on Mac, after a couple of weeks of failure after failure. However, now, I've run into the problem that the wifi doesn't work (because Ubuntu doesn't have ...
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6answers
633 views

Concealing long paths in variables in Bash

I have to move files from one folder to another but they reside in totally different paths. The destination path is so long and complicated that I am not able to remember it. Is there any way to go ...
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1answer
952 views

How to recover a deleted Folder(/Desktop in this case)

I have accidentally deleted(in a way) or I can say dislocated reference to my /home/user/Desktop directory , Is there any way to undo what I have done. The following Describes what I have done $ cp ...
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1answer
284 views

bash- Control-C behavior (^C) / gksudo vs sudo

This is about how the ctrl+c key press has a different effect when performed to a gksudo instance as opposed to a sudo instance. I executed the following using gksudo to read an installation failure ...
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1answer
28 views

Partition not loading automatically - Ubuntu [duplicate]

So I store my websites on a partition of my laptops hard drive. Programs and my bash scripts say that this partition does not exist, until I personally open the partition up by clicking the icon on ...
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0answers
33 views

Adding a file/directory to a specific location (on the Desktop) [duplicate]

I use Ubuntu 14.04.(Unity Desktop Environment) I like to use a specific part of my desktop(the screen) to store files related to my current work, and certain other spaces to store images and others. ...
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2answers
221 views

bash command starts new process

I have noticed that whenever I just execute the command bash in Terminal that it appears to have executed successfully with no output. I have also noticed that then when I want to close Terminal I ...
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3answers
494 views

How can I input to a file directly from the terminal

Other than bringing up a text editor, is there a way I can input text in a linux terminal directly to a file? (then enter a control code such as ctrl-c, to end the input) I'm pretty sure there's a ...
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2answers
24k views

Shell does not show typed in commands, “reset” works, but what happened?

My problem is that the Bash shell stops showing the characters I type into it. It does read the commands though. I've come across this problem quite a few times and I don't understand what causes it. ...
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2answers
320 views

How to find and replace word or character in paragraph using bash script?

I want to write a script which take input as a paragraph. In that paragraph I want to find and replace a word or a character provide by the user and display the new paragraph with the changes. I also ...
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2answers
147 views

bash sorting multiple duplicate strings in a file

I have file like below: Personname:Mark Hobby:chess Hobby:tennis Personname:Tom Hobby:swimming Hobby:badminton Hobby:boxing Hobby:music Personname:Nick Hobby:swimming Personname:fabio Hobby:swimming ...
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374 views

Can simple scripts use GUI file manager to select file?

I have an extremely simple script that currently executes a command on a file located in the same folder: command ./file_in_folder option output. It would be better if script asks user which file they ...
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7answers
1k views

How to see if no output from `ls *.xls` command?

Ubuntu 14.04.1. I have a bash script, called by cron every 10 minutes, which basically looks for files in a subdir, then loops through and process each file. But how do I check if there are no files ...
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2answers
4k views

Export $DISPLAY value in Shell script

I am trying to Print the value of $DISPLAY under my Shell script. I have Following shell script which Exports the DISPLAY: #!/bin/sh export DIPLAY=:10.0 Here, each time I need to change the Value ...
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4answers
496 views

Alternative way to run a sudo command on startup

I am trying to write a script for my Ubuntu system to hibernate, whenever the amount of battery left is (say) 5%. This script will run on startup. I can get the battery left using upower -d |grep ...
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1answer
213 views

How to start CAESES free?

I have downloaded the program CAESES free on my Ubuntu 14.04.1 LTS and unpacked it into the folder /home/xyz/Programy/CAESES-FFW_3.1.2_Linux.x86_64. The program developer proposes to use the bash for ...
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1answer
127 views

Deleting input forward to the next space

When in terminal I can use Ctrl+w to delete a whole word or IP (. is separator for each octet) when going leftward of prompt. However, if I try Alt+d to go rightward of prompt, terminal recognizes "." ...
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1answer
708 views

The program 'sed' is currently not installed. You can install it by typing [sed: not found]

I was trying to create my own program in the /usr/local/bin. During the process I messed something up and now anytime I press enter or type anything in the command line, I get this stupid message......
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2answers
89 views

Login screen keeps coming back (bash_completion related)

I'm using Ubuntu 12.04. By accident I deleted /etc/profile.d/bash_completion.sh. I then restored it by copying that same file from another similar Linux machine (same OS). Now I can't login because ...
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1answer
759 views

How to use i2cset to display the ip address

I am trying to use the i2cset command to display characters on my LCD screen. For example i2cset -y 1 0x3e 0x40 0x49 displays I and so on. Now I want to try and display my ip address. I had posted ...
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1answer
52 views

execute the enscript command in cron job fails

When executing my backup bash script, all goes fine including executing two lines of enscript (enscript converts a log file to .html and.pdf format in my case). Problem is running the same script ...
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1answer
7k views

bash comparing multiple column in two files with different length

I have following data set in text file data.txt d1,40,gold d2,30,silver d3,20,bronze d4,10,iron d5,5,wood d6,20,gold d7,10,wood d8,5,gold d9,10,silver . . . def.txt gold,40 silver,30 bronze,20 ...
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2answers
344 views

bash text colon values to html table

i had a big file with more than 10000 recordslike below, this need to be converted to html table i tried various ways with converting into csv and then to html etc.., not able to get the desired ...
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1answer
464 views

Help me remove this Bash error

The bash error below keeps popping up each time I open a new terminal, why is that? How do I fix the bash error below? bash: /home/yonas/.rvm/scripts/rvm: No such file or directory
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92 views

Network scanning script - cronification issues

This is (yet) another query about cron. I have referred to the guide on this site before posting here, but I still can't get this script to work. It is designed to suspend the PC when activity on ...
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2answers
239 views

How to find (and delete) duplicate files among local disks and NAS? [duplicate]

I want to detect and delete duplicate files (same size) along local Disks and Nas Disks (The Nas Disks are mounted using Samba) I found the How to find and delete duplicate diles answer but I'm ...
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1answer
863 views

How to allow the shutdown of computer using web server?

I have a web server under apache2 and php5. I want to shutdown a computer using web server but to shutdown the computer a current user should be 'root' user because command for the turning off of PC '...
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1answer
61 views

Help with an IF and SED to replace \n

I have a filename variable that sometimes gets set as: attachment; JobRunStatisticsReport_20150122.zip In the File Manager window, it looks like this: I need help coming up with an IF statement ...
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2answers
1k views

Difference between `sudo su` and `sudo fish` [duplicate]

I am running fish (Friendly Interactive Shell) as my standard shell in Ubuntu 14.04, rather than bash. I noticed the following behaviour and don't know, if any of these are the preferred one to gain ...
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2answers
940 views

Find out if lines of a file is sorted

I have a large text file, where each line consists of three numbers, except for a few comment lines that all start with a hashtag (#). I want to verify that the non-comment lines are sorted ...
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2answers
110 views

How do I use the set command to find directories in my path?

I am taking a linux class this semester and one of the questions on a lab is: Use the set command to find out all directories in your path. Normally, I would just use $PATH to find out the ...
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1answer
265 views

How to check for any activity on a physical disk?

I have an SD card that's connected via a USB interface. The output of fdisk -l indicates the following: Disk /dev/sdb: 3965 MB, 3965190144 bytes I have a script that re-initializes multiple ...
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1answer
261 views

Code works in Terminal, but not when in a script

I have: This is my zip file.zip in path $dec If I manually copy this code over to the terminal window, I get the correct output. But, if I take the same exact code and put it into a .sh file and ...
5
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1answer
579 views

How can you mirror an autocomplete function in your own aliases (in 14.04)

I have a bunch of aliases that I've used on my 12.04 machine. example: alias pssh="tsocks ssh" alias pscp="tsocks scp" alias prdp="tsocks xfreerdp ..........SOMETHING ...." These aliases are ...
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1answer
1k views

Differences between md5pass and md5sum

This question may be insane ,but due to definition of hash algorithms, hash algorithms are some kind of functions that accept variable length input and make it encrypted and the output always has a ...
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9answers
3k views

change directory (cd) but by replacing a part of the path only

Not sure if it is possible, but i seem to remember from my old days using AIX it was possible to change my path by just saying which part of the path needed to be replaced by something else. For ...
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1answer
393 views

“Command not found” after running a file compiled on the same directory [duplicate]

I don't know what is going on... d@d-SVF15A17CDB:~/University/CSC209/a1$ gcc -o remvocals remvocals.c d@d-SVF15A17CDB:~/University/CSC209/a1$ dir remvocals remvocals.c d@d-SVF15A17CDB:~/University/...
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2answers
159 views

Send a twiter message from the terminal

Is there away to send a message form the terminal or write a shell bash file that fill send a message to twiter.
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1answer
33 views

Implementing an if clause in simple bash script

I've got a bash script that makes use of cal -m $v where v is number . The user is prompted for v's value at the beginning of the execution . In case the user presses ENTER instead of introducing a ...
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3answers
8k views

How can I wake a sleeping bash script?

Is it possible to wake a process that is paused using the sleep command? As an example, lets say you have this script: #!/bin/bash echo "I am tired" sleep 8h echo "I am fresh :)" After 30 ...
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1answer
105 views

Syntax for regex in IF statment

I'm trying to come up with the syntax for a regex in an IF statement, but I'm not quickly having success... Can anyone lend a quick hand please? if [[ "$path/$file" =~ .{txt,doc,docx,xlsx,rtf} ]]; ...
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2answers
158 views

How do you create a shell script?

I need to create a shell script that will create a user then put it into a group. How do I do it?
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1answer
40 views

A problem when invoking a function in a bash script

I've written the following bash script to find a driver's name, I'd make it better but for now I just want to know why this script doesn't work ? #! /bin/bash ## the driver's name drivername=$(...
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1answer
33 views

A bash scripting problem

In advance , I'd say I know the basic syntax of bash scripts but the following statement is not recognized for me : if [ ! -f /etc/debian_version ] could you help me what this condition going to ...
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2answers
98 views

A strange problem about terminal or command environment

Two weeks ago I was learning Python and Flask. I followed step-by-step the steps in The Flask Mega-Tutorial, Part I: Hello, World!. While I was following the tutorial, I had problem in "virtualenv", ...
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90 views

Desktop Environments Incorrect After SLiM Install

I am working on making an automated install based off of Lubuntu using Debian Installer so that the install is as automated as possible (a few inputs at the very beginning). So far I am mostly pleased ...
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1answer
476 views

PATH is not getting exported by default in Ubuntu 12.04

When i run su on command line and enter root password, I am getting error as mentioned below: Command 'lesspipe' is available in the following places /bin/lesspipe /usr/bin/lesspipe ...
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1answer
711 views

Why isn't Roundcube's Upgrade Shell Script Working?

I am trying to upgrade my Roundcube installation from version 1.0.4 to 1.0.5 and I cannot get the upgrade script working properly. According to Roundcube's upgrade documentation, the following command ...
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2answers
275 views

bash script dollar sign operator $ question - is it incompatible to ~ operand?

I am new to the Linux environment. After a quick search I could not find a helpful question about the $ operator used in bash scripting. I do not know if this question relates more to the Ubuntu (or ...