Tagged Questions

The command-line is the interactive interface to your shell.

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1
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1answer
18 views

Checking permission for files

Is there any way to check/find files and directories that only I created and check their permission?
0
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0answers
8 views

iw dev <iface> connect <essid> doesn't connect

I am trying to connect with the by the command line to the Wifi I have up on my AP with hostapd and no password and it's not working, the command doesn't have any effect. My AP doesn't have password ...
1
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1answer
7 views

Maintain the path in installable UnixAPI

I am developing an API in Unix environment for virtual machines. Most of the modules are developed in python. I have few questions on this. Inside the API I am using absolute path like ...
0
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0answers
6 views

Make python module as an installable API

I am developing an API in Unix environment for virtual machines. Most of the modules are developed in python. I have few questions on this. I want to make this as an installable API, I mean to ...
2
votes
1answer
53 views

Basic steps to develop python API in Unix environment

I am developing an API in Unix environment for virtual machines. Most of the modules are developed in python. I have few questions on this. I have the file extension as abc.py. I would like to make ...
2
votes
1answer
25 views

How to run a program that has its own command line within a shell script program

I need to write a shell script to automatically run a set of files through an existing program ~1000 times. The program I'm trying to run them through is accessed through command line as follows, then ...
0
votes
1answer
12 views

How do I immediately put a drive to sleep (without changing its power setting configuration)?

Within GNOME's "Disks" utility there is the option to immediately put a drive into sleep / standby, which spins down the platters. I would like to do this on my servers before pulling hot-swap drives ...
2
votes
1answer
27 views

Saving a list in a specific format

Is there any way I can save a list in a output.txt, but without using the text editor to make so that: before each output there should be the command used that made the list ( list -l, for example ...
1
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2answers
22 views

ls for decreasing order in combination with another command

I know there is the ls -r command for listing in a decreasing order. But is there any simple way to do it with a combination with another function by only using ls and not its arguments?
1
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2answers
47 views

What can I do if bash stops echoing?

One of the applications I use at work sometimes screws with my bash and so I don't see my own input anymore. I.e. $ echo foo foo $ becomes $ foo $ I incorrectly tried to run stty -echo which ...
2
votes
1answer
27 views

Dig command: Is the output guaranteed to be sorted?

Let's say I'm trying to lookup the IPs mail.yahoo.com, gmail.com and mail.google.com If I execute: dig @8.8.8.8 +nocomments +noquestion \ +noauthority +noadditional +nostats +nocmd \ ...
1
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3answers
44 views

How to access temporary file straight after creation?

I've script which is connecting to remote host via SSH, creates temporary file and executing the following command: Calling system(mysql --database=information_schema --host=localhost < ...
0
votes
1answer
49 views

grep: input file 'X' is also the output

I use ubuntu 14.4, and attempt to redirect the output of grep command to a file, but I keep getting this error: grep: input file 'X' is also the output I've searched for this issue and just found ...
4
votes
1answer
41 views

Why does BASH process substitution not work with some commands?

On occasion process substitution will not work as expected. Here is an example: Input: gcc <(echo 'int main(){return 0;}') Output: /dev/fd/63: file not recognized: Illegal seek collect2: ...
2
votes
1answer
28 views

How to create a deterministic tar.gz using git-archive?

Creating a git repository for testing. ~ $ mkdir somefolder ~ $ cd somefolder/ ~/somefolder $ git init Initialized empty Git repository in /home/user/somefolder/.git/ ~/somefolder $ echo test > ...
0
votes
2answers
57 views

What are the meanings of different Unix commands? [closed]

I am running Ubuntu 14.04 on my machine. I am new to Linux and feeling lost when I see different command line commands (or what exactly are they called?) like sudo, apt-get, mkdir, -R, -n etc. while ...
2
votes
1answer
31 views

Confused about piping commands from find to commandX?

I have a script, run.sh, that looks like this: #!/bin/bash FILES=$(find corpus/ -type f) for i in $FILES do ./individual.sh $i done It runs without problem. I want to do away with the run ...
3
votes
1answer
97 views

What is the purpose of those special characters in the sed command?

I found this bash command that creates a directory tree in your console window. I find it quite useful, but I don't really understand how all of the special characters work. Could someone help break ...
3
votes
3answers
61 views

Sorting directories by last modified date/time of the same-named contained file

Is it possible, using grep, find, etc, to sort a list of directories by the last modified date of the same-named file (e.g., file.php) within? For example: domain1/file.php (last modified 20-Jan-2014 ...
1
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1answer
34 views

Start a background process from a script and manage it when the script ends

I'd like to run and configure a process similarly to a daemon from a script. My shell is zsh emulated under Cygwin and the daemon is SFK, a basic FTP server. For what matters here, the script ...
2
votes
1answer
21 views

PHP CLI and Bash - change behaviour of PHP keyword

Our hosting providers have installed 3 versions of PHP onto our linux box and when I SSH into it the command php points to use/bin/php which is version 5.2, the command php-5.4 points to ...
1
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2answers
32 views

Replace text/string with new line

I have had a requirement where I need to move data to a new line based on a text: Input :61: 456 B66666 :61: 878 N78777 :61: 534533534 BNNN Output :61: 456 B66666 :61: 878 N78777 :61: 534533534 BNNN ...
1
vote
1answer
29 views

How to set size of mate-panel via command line (not via dconf)?

When I install Linux Mint (Mate, Qiana) I like to make Mate panel more wide (or may be "higher"). Default it is near 20 pixels. I make it, for example, 45 pixels. I can easy set it by right button ...
1
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2answers
40 views

Add test user to the sudoers file, to run ifconfig

I would like to see the ifconfig file with test user (under Linux Debian) that's why I have used the sudo task, but the terminal said that: test is not in the sudoers file. How can I take the test ...
0
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2answers
60 views

Command Line only UNIX/Linux OS [closed]

I want a command line only UNIX/Linux OS. I want the download of the OS to be below 80MB. I want minimum software.
1
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0answers
66 views

How to pass commandline arguments larger than 131k? [closed]

I want to get data out of a Virtualbox VM. You can define variables (called guestproperties) via commandline, which can be accessed from both the host and the VM. The amount of data for such a ...
0
votes
1answer
42 views

Scale cpu frequency in CLI?

I am using cpufreq to scale my CPU frequency. But I do that by clicking cpufreq icon on the panel of Ubuntu 12.04. If without a mouse, how can I show and scale CPU frequency by running commands in ...
3
votes
1answer
109 views

What are the bash shell length limitations for here-docs?

What are the length limitations for using here-docs as part of bash command lines? I am finding that short here-docs work fine, but when they get longer there is some point or structure after which ...
1
vote
3answers
93 views

How to enter foo-* folder without actually using wildcard or shell expansions?

Short story I'm looking for the command to enter first found foo-something directory like: cd foo-* but without using wildcard (or other special shell characters). Long story As part of the ...
1
vote
1answer
29 views

Redirect output to stdout and pipe to a binary

I have a nice PS1 line in my .bash_profile, and I want to copy it to another machine. So I want to view it AND copy it to my clipboard. I can't figure out how to string the commands to do this ...
0
votes
1answer
74 views

How do I use vim on the command line to add text to the middle of a file?

I am trying to write a command along the lines of the following: vim -c "XXXXXX" myFile Instead of the "XXXXX" I want to supply some commands to vim to add some text to an arbitrary point in the ...
0
votes
0answers
18 views

What is the command-line equivalent to 'mintupdate' for Linux Mint?

Linux Mint has a nice GUI-based Update Manager with selectable update tiers. The defaults are for levels 1 through 3 our of a possible 5 levels. However, I often handle administrative tasks for a ...
1
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2answers
57 views

What is/are the advantage(s) of running applications in backgound?

I really don't know what are the advantages of running applications in the background. Something like Application & via command line. Why exactly do we run applications in background and when ...
0
votes
1answer
42 views

What does “./” do? [duplicate]

I've got absolutely no idea what this does and if I search something like "linux ./ command", Google just seems to ignore those two characters as they're puntuation. If someone can give me a simple ...
0
votes
1answer
40 views

How to move system clock time forward/backward?

I know commands for setting specific time and/or date, but can't find ones which move the time relative to the current time. What are the commands to move the time forward/backward x ...
1
vote
1answer
79 views

Linux split separate files on disk but see as one

Is there is a functionality in Linux that allows you to reference multiple files as one? For example: linux.txt.0, linux.txt.1, linux.txt.2, linux.txt.3 can be seen as separate files or as linux.txt ...
0
votes
3answers
104 views

Can dash replace bash as my default shell?

From what I read, dash can be made as a shell by using the command ~$ chsh shirish Password: Changing the login shell for shirish Enter the new value, or press ENTER for the default Login Shell ...
1
vote
1answer
49 views

Linking a static library when compiling a C program

I'm linking *.a file with *.c file, so I have used the following command: gcc abc.c -l ad.a (here abc is the C source file and ad is the static library file) then after executing the following ...
0
votes
1answer
41 views

How can I convert this excel file so that it is not only one row?

I've got an Excel file, shown in the picture below, and available for download here. What I need is to extract the variables under Item (Column B) and the values in column G. As a start, I tried ...
0
votes
1answer
32 views

What is (and how to perform) action listing?

After performing a series of actions in Linux's terminal, I am supposed to perform a "listing" of them. I couldn't find it online. All I can guess is that I am supposed to make the terminal print out ...
1
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0answers
19 views

How to abort/cancel a running command in initramfs?

When I invoke a long-running command, e.g. du, I don't see a way to abort/cancel it (Strg/Ctrl+c doesn't work), other shells/ttys aren't available. Am I completely doomed after having started a long ...
0
votes
2answers
46 views

Copy a file in Nautilus and use it in a shell command line

Suppose I click on a file in Nautilus. How can I copy the full address to the clipboard, and then easily paste it into a shell command that I'm typing in a terminal?
0
votes
1answer
72 views

Scripts to E-mail Myself a File

The following command e-mails myself a file: sudo mail -a FILE_ADDRESS -s "Subject of E-mail" myemail@gmail.com Question: How do I turn this command into a one-liner, so that I could just type ...
0
votes
2answers
59 views

Access USB drive on Ubuntu server

I'm currently using a Ubuntu 14.04 server with command line access only. My .html files are on my Windows and I want to transfer them. What is the path in my Ubuntu server to get into my external ...
0
votes
1answer
130 views

Kali linux throws ' isolinux.bin missing or corrupt ' error

I downloaded Kali Linux from this link, I have a 32 bit OS, so I guessed ISO 32 Kali Linux is the suitable for me (they did not clarify in the website based on what we choose the type). Then, I ...
1
vote
3answers
70 views

Securely passing user input to command

I have a daemon daemon running in Server A. There, there's an argument based script to control the daemon daemon_adm.py (Server A). Through this script I can insert "messages" to daemon coming from ...
1
vote
1answer
36 views

View timestamp for CUPS print jobs

I'm looking for a way to view the timestamp of a job in CUPS. I've searched the man pages and can't seem to find it. The long term goal is to have a script that parses the time from the jobID and ...
5
votes
1answer
211 views

combining find with other commands: when to use -exec and when to use pipe? [duplicate]

I've learned to use the find command by itself to find files and directories however when it comes to doing something with the files/folders I'm confused. Given the following command: find . -type f ...
2
votes
1answer
37 views

w command for the other network hosts

While the who command refers to the local machine, rwho shows the same informations about all the known hosts of the local network. Similarly, w shows informations about the users on the local ...
3
votes
5answers
205 views

How to create a simple .txt (text) file using terminal? [closed]

I'm just trying to review basic terminal commands. Having said that, how do I create a text file using the terminal only?