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

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0
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1answer
91 views

Split string into array and print each element on a new line with commandline

I'm having a String which is seperated by commas like a,b,c,d,e,f that I want to split into an array with the comma as seperator. Then I want to print each element on a new line. The problem I'm ...
0
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0answers
18 views

How to execute shell script in remote windows machine [duplicate]

I have a shell script which will be useful to download the jars from ftp and copy it in a particular location and do some deployment stuffs.. I need to run the script in remote Linux and windows ...
0
votes
4answers
75 views

grep match multiple substrings and pass or fail on missing

I have a nginx -V 2>&1 | \ grep -qi 'nginx/1.9.10\|ngx_pagespeed-release-1.9.32.10\|openssl-1.0.2f\|modsecurity-2.9.‌​0' \ && echo "has the stuff we need" \ || echo "missing ...
1
vote
4answers
127 views

What command would I use to find out how much total space my hard drive has left?

What's a single command I can run that shows me the total amount of space free on a hard drive? I don't want to do any math, I just want a command that shows me the total free space on my hard drive.
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votes
2answers
183 views

GUI gone after apt-get upgrade on clean install, Ubuntu Wily-

I was pointed here from AskUbuntu because my question was about an unsupported Ubuntu derivate, here is the copy-pasted question: I upgraded my fresh install of Netrunner 17 Horizon (Ubuntu-based, ...
0
votes
1answer
30 views

Possible to prevent multitail from closing “finished” command windows?

Assume a multitail call like the following: multitail -s 2 -l "long-running-command" -l "short-running-command" Now, I would like to have both windows remain open, even after they are finished. ...
0
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0answers
32 views

How can get the screen command to work properly?

I'm trying to work out how to use the Unix screen command. I'm using Zsh on Mac OS 10.11.3. So far, nothing is working as described. (I don't have enough reputation to link to the tutorial I'm ...
0
votes
1answer
43 views

How do I execute command to avoid interference from the shell [duplicate]

Sometimes a same command is provided by shell-builtin as well as other file/package. Example: $ type -a printf kill printf is a shell builtin printf is /usr/bin/printf kill is a shell builtin kill is ...
0
votes
1answer
31 views

get command line agrument by variable in shell script

I want to get the arg of a command from a var that has the index in it of the arg that I want. Something like this # command in terminal, `foo -r -f value_wanted` index="3" var=$"$index" echo $var ...
0
votes
2answers
113 views

What does this command mean?

lines=$(grep '^[^:]\+::' /etc /shadow) What does this whole command mean? What does '^[^:]\+::' mean? if I put if else statement like: if [ "$lines" == "" ]; then Will it display (which is ...
0
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1answer
21 views

umask permissions that result in no change

I am having a really hard time understanding how umask works. How is something that is 666 masked with 001 still 666 ?
1
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1answer
54 views

Using terminal to reset icon cache - which method?

I've been trying to find out how to reset the icon cache on my MacBook, and two methods seem to always be suggested. However, the two approaches differ slightly in the third line. Method 1 sudo find ...
3
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2answers
124 views

The discrimination between short and long option is only `-`?

On Unix system, options begin with - is short option, while options begin with -- is long option. Is my understanding right?
-2
votes
1answer
67 views

What does the -p option do exactly with the cp command?

So I am trying to understand what is the significance of the -p option for the cp command. I opened the manual of the cp command and it says -p same as --preserve=mode,ownership,time stamps. But ...
0
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2answers
41 views

usermod question about option e

after reading the man pages I am unable to find an explanation of what this does (the tack e option) usermod -L -e 1 username -e 1 does this mean one day after the linux epoch, jan 1 1970? How ...
3
votes
2answers
204 views

How to write contents of a file to new file removing repeated lines [duplicate]

For example, a file file1.txt contains Hi how are you hello today is monday hello I am fine Hi how are you After the processing of file1.txt it should write to file2.txt and contents ...
1
vote
2answers
51 views

How do I remove text blocks within a log file? [closed]

I have the following log: 2016/01/20 00:00:16.035 [T114BaseServlet] ... Blah Blah Blah 2016/01/20 00:00:16.036 [ApplicationState] ... Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah ...
1
vote
1answer
65 views

get first CLI argument after the options in shell scipt

I have a script I class like so gitploy up -t 2.0.0 test_repo. I pull out the "action" up right away, then I need to be able to get the test_repo before I process the options. I don't want to lose ...
0
votes
1answer
36 views

Unix Command Line Create Text File and Transfer Locally

I have a file located in unix command line using 'SecureCRT'. I want to get this file's data in excel so I need a .txt file. I have 'WinSCP' installed aswell. After I do "more [file name]" it ...
0
votes
1answer
47 views

grep for numbers over 10

I'm looking through a file for specific kernels. I want everything from 3.8. to 3.17. egrep 3.[8-17] is kind of the thing I want but that obviously doesn't work. How do I grep using the example ...
4
votes
5answers
391 views

Command line method to find repeat-word typos, with line numbers

Updated: Clarify line number requirement, some verbosity reductions From the command line, is there a way to: check a file of English text to find repeat-word typos, along with line numbers where ...
3
votes
5answers
48 views

List available man page sections for an application

I am thinking about the man page sections 1 = user commands, 2 = system calls etc. Is there a way, a command that will tell me what sections are available to read besides running something like man ...
1
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3answers
39 views

Shutdown PC after suspending terminal process (apt-get upgrade)

What's going to happen if I shutdown my PC after suspending a terminal process (with Ctrl+Z)? In my case, it's sudo apt-get upgrade. The upgrade file size is 250 MB, it takes far more time downloading ...
0
votes
1answer
26 views

Why is echo not working for mt valgrind command?

So I have my makefile working great, except that It doesn't create the valgrind.out file and I don't know why. So the console succesfully prints out that my executable file line is created but not ...
2
votes
1answer
72 views

Execute a command after each output line from ping command

I am trying to build a one-line command to monitor when my Internet connectivity drops. I'd like it so that if I run ping www.google.com indefinitely (one ping per second), if the word "timeout" ...
2
votes
2answers
55 views

Autocomplete from grep output

How might I more easily use a filename found by grep as an argument to vim: $ grep -r foo * lib/beatles/john.c lib/pantera/phil.c lib/pinkfloyd/roger.c lib/pinkfloyd/richard.c ...
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3answers
78 views

Type and the speed of CPU using the lscpu command

I want to determine the type and speed of my CPU so I executed the CPU command, However, I have some confusion, so from my output I can't really determine what is my CPU type and my speed is 1600 ...
3
votes
2answers
139 views

What are the keyboard shortcuts for the command-line?

I'm talking about the keyboard shortcuts that you use in command-line/terminal. Example: Ctrl+c that kills the process, Ctrl+d that logout, Ctrl+z that send process to background... etc. I've tested ...
3
votes
2answers
83 views

How can I type a command to execute when the current command completes?

I have a function (not) that displays a notification. Hence, I can use it to show when a command is complete. sleep 5; not However, sometimes I forget to add ;not. In OS X's terminal (a few years ...
2
votes
4answers
153 views

Moving and renaming hundreds of .jpg files, all named 5003.jpg

So here's the deal, my girlfriend wants me to transfer all of her photos off from her iPhone onto her laptop (on which we are running Ubuntu 14.04). All of the dedicated programs I tried to do this ...
1
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2answers
69 views

linux bash if statement inside for loop [duplicate]

I am attempting to iterate through 1-30, say hello #number for each except for number 10. This is what I have which is not working for i in {1..30}; do if [i != 10]; then echo "hello $i"; fi; done ...
3
votes
1answer
30 views

How do file managers split off opened programs?

I'm challenging myself for the next few weeks to use a terminal emulator as my main file manager. I've run into a question: how do I open a file (e.g. an Inkscape .svg) in it's GUI program from the ...
2
votes
1answer
59 views

How do I turn entire stdin into a command line argument verbatim?

Attempt 1 xargs -I '{}' -0 -n 1 myprogram --arg '{}' --other-options But that does not preserve zero bytes. Also the program may run multiple times. But instead of failing in case of zero byte ...
1
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1answer
47 views

How to prevent bash from transforming arguments?

I am trying to use an argument of the script to find other files. The problem is that when i give the script the argument x.* in the command line, it is transformed into x.sh. Any ideas how i can get ...
4
votes
2answers
168 views

Why does ping run forever by default in Linux? [closed]

What was the rationale for the design decision to make ping's default behavior to ping forever? For example, the following basic usage will ping address 127.0.0.1 forever: $ ping 127.0.0.1 ...
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2answers
207 views

APT repositories on Android

I am using a terminal emulator on Android called "Termux". It comes with the APT command installed. However, the repository is very limited. What I want to do, is to see if larger repositories like ...
1
vote
1answer
73 views

Updating a git variable in the Shell prompt on every command

I am running TCSH and I would like to update my prompt every time I run a command. I think can currently do that via backticks. set tmpstr = `git status --untracked-files=no --porcelain` set ...
5
votes
5answers
641 views

Run same command with different parameters

I've a not really permissive program to work with. Unfortunately, this program doesn't just allow the following "command -a -b -c" or "command -abc" So I've to always type the following command ...
0
votes
1answer
23 views

What the long option “ --debug” suppose to do in bash?

GNU bash, version 4.3.42(2)-release-(i686-pc-msys) Usage: bash [GNU long option] [option] ... bash [GNU long option] [option] script-file ... GNU long options: --debug ...
2
votes
1answer
45 views

How to quickly cd to a command's directory after used the 'which' or 'type' [duplicate]

I want to cd to the directory of go's bin file: $ type go go is /c/tools/go/bin/go How can I quickly cd to this directory in bash ?
0
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2answers
36 views

Is it possible to see errors when executing a script inside a script?

I have the files my1.sh and my2.sh. my1.sh: .... do something ./my2.sh my2.sh: .... do something else Now my problem is that if any command (like or example a ntfsclone) fails in my2.sh I get ...
0
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2answers
69 views

return value of command not displayed in script

If I execute the below rsync command in command-line , I am getting the proper return status /usr/bin/rsync -azv -p /home/zaman x11server:/home/zamanr &> rsyncjob/output."$datetime" echo $? ...
1
vote
1answer
48 views

shell command cd !$ [duplicate]

I looked at this question and googled, but can't find a definitive answer. What does !$ do when typed into terminal? I typed mkdir /path/to/dir cd !$ Which brought me to /path/to/dir but I still ...
1
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2answers
52 views

what condition we need to use “.” in command line? [duplicate]

a question - in some case, I saw command line like this . ./test.sh I'm curious why use "." before "./test.sh" what condition we have to use "." before a command?
0
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1answer
41 views

Create command line variables with PATH

As I am more of a web guy, i need a little help with this one, so I will explain what I am trying to do before I ask. I am creating batch script that will: GET request from an external server (json ...
0
votes
1answer
67 views

How to count the number of files in current directory that contain a specific phrase? [duplicate]

I want to count number of files in current directory that contain the phrase "HW". I tried ls -l | grep HW | wc -l
1
vote
1answer
69 views

How to make the prompt beep with every key press/character printed?

You know how hollywood movies depict hacking scenes with fast yet scrolling CLI technobabble in this fashion : https://www.youtube.com/watch?v=-jkj60TUWaE I want to know how to modify linux to make ...
0
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4answers
148 views

Flattening complex folder structures with duplicate file names

I have a folder with a complicated folder structure: ├── folder1 │ ├── 0001.jpg │ └── 0002.jpg ├── folder2 │ ├── 0001.jpg │ └── 0002.jpg ├── folder3 │ └── folder4 │ ├── 0001.jpg │ ...
3
votes
1answer
289 views

Set default shell as bash for users not in /etc/passwd

On my company's Ubuntu 15.10 desktop system, I log in via Active Directory using some magic based upon PBIS. Thus, my user account is not listed in /etc/passwd even though I have a home directory ...
0
votes
1answer
40 views

How can i list all stopped services in the order that they were stopped

I have a Debian server on which there are certain stopped services. I would like to know how can i list all the services in the order that they were stopped. Also would like to get the time when they ...