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

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2answers
59 views

Copy files to multiple computers over LAN

Good day, I am pretty new to Unix and I need to do this simple task. I have a few files, let's name them file01, file02, file03 etc. and I need to copy each of them to one computer from a list. The ...
0
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1answer
47 views

What does the option -C achieve in ls output?

In the man pages it says: -C list entries by columns However, I really cannot notice any difference between the output of ls or ls -C, could someone explain this to me?
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0answers
30 views

How much arguments can I pass to command? [duplicate]

Is there any limit of arguments that could be passed to C/C++, Python, Bash etc. program? Practical usage: pass bitmap data from/to C++ to/from Python program via arguments.
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2answers
59 views

What regular expression in grep searches for strings of three same letters in a row?

I have a text file and I am using the grep command with a regular expression to get only the lines which contain three same successive letters, e.g.: aaa bbb ccc ddd What regular expression do I ...
12
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4answers
581 views

What is the meaning of IFS=$'\n' in bash scripting ?

at the beginning of a shell script program in the bash is the following line: IFS=$'\n' What is the meaning behind this collection of symbols ?
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2answers
55 views

How do I get a list of all directories and files with absolute paths each line ?

Using ls -R / i get every file and directory listed that exists, but not in the desired format. What do I need to write on the command line in order to get a list in such a format, that every line ...
5
votes
3answers
298 views

How do I move all the files with the same name scattered through the file system into one folder?

I have a file system tree and on different locations within it are files with the same name. I tried the following command on the command line: find / -name "HAHA" -exec mv {} /home \; It only ...
6
votes
3answers
306 views

How do I use the regular pattern operator {m,n} in grep?

I have a text file, from which I need to select only those lines, which include the string "tt". So I tried this on the command line: grep "t{2}" textfile Allthough I know the textfile contains ...
0
votes
1answer
55 views

Command to to restart Pantheon files manager (elemenaryOS)?

After editing context menu entries (by editing files in /usr/share/contractor) I have to restart the file manager to see the changes. How to restart Pantheon Files with a command so that I don't have ...
1
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1answer
24 views

How do i start a sound file without displaying the window of the player ?

Whenever I type xdg-open filename or vlc filename, a window opens and start playing the filename. How can I achieve to play the sound file without displaying a corresponding window in the command line ...
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0answers
32 views

How can I get my Linux distribution name and version using the command line ? [duplicate]

I have Linux Mint Version 7.1 Rebecca. What do I need to write in the command line in order to find this information. I tried uname -a , but I got informations about my computer name, Kernel Version ...
0
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1answer
20 views

what do i need to do additionally to start X in order to not end in a black screen?

From the xfce desktop environment in Linux Mint, I pressed Ctrl + Alt + Fn in order to get into a virtual terminal, then I stopped the mdm display manager with killall mdm. So far it worked, but once ...
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1answer
93 views

command to clean up old log files

I was trying to automate some auto cleaning of my Ubuntu System, with Cron Jobs I tryed to simplify this: sudo find /var/log -type f -name "*.1.gz" -delete sudo find /var/log -type f -name "*.2.gz" ...
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2answers
75 views

what are considered old and powerfull commands? [closed]

I came across the terms awk and sed, awk goes once through all lines and performs a task whenever a line meets a certain condition, sed can manipulate a stream of input before it goes further to the ...
2
votes
0answers
40 views

Show connected printers in CUPS

Is there a way to list the available/connected printers in CUPS using the command line or better yet using the CUPS API ? I already tried lpstat -a but it only lists the installed printers and not ...
0
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0answers
42 views

How do i log into a virtual terminal ?

I do not know what a virtual terminal is, but i have to enter one, in order to switch off the display manager in a fashion that allows me to type next a command in the virtual terminal that starts the ...
1
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0answers
20 views

Is it possible to recover an OS from (initramfs) ? [closed]

I have a non working battery and a bad cable connection, so my pc often switches off inpropriately and i end into the dark image with the prompt (initramfs). When i type help a list of commands i can ...
0
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1answer
39 views

what is the difference betwwen starting a command with nohup and &? [duplicate]

nohub and & seem to have a similar effect on the surface, they both start processes without occupying the shell from which they have been started, how do they differ on a deeper level?
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0answers
16 views

How can i enter the sudo X command after having killed the mdm display manager?

I was told, in order to just start the x window system, i have to input at the command line: sudo killall mdm. After having done so, my window freezes and i have no further controll, my only option so ...
2
votes
1answer
43 views

how to start into the x window server from linux mint ? [closed]

what do i have to do in the terminal in order to switch all the frontends of the xserver off, just to have the x window system running without any window manager or desktop environment?
0
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2answers
31 views

How to match multiple lines starting with a TAB, and the line before the 1st one in a group?

I've got some third party log files I'm trying to pull errors out of on the command line. The logs look like this: time=1 time=2 time=3 at com.test.com.... at com.test.com.... at ...
2
votes
1answer
78 views

Debian Linux: Start/run application/process in another virtual terminal

You'll have to bare with my my Linux terminology is pretty bad. When I say virtual terminal I'm talking about when you press ctrl+alt+ a function key (F1-F12). I think they are called virtual ...
2
votes
3answers
79 views

How to insert bash variables in awk?

How to insert bash variables in awk (for example i need to do in in some for loop - like this: in first iteration use awk to search string by first column, next by second column and so on with using ...
0
votes
0answers
37 views

Is there a way to find the uptime of a network card in unix?

Some of the information i am requesting can be gleaned from /var/log/syslog , e.g: grep wlan /var/log/syslog But the usefulness of that information also depends on how you are network connecting; ...
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2answers
174 views

Perform multiple commands on one line

There are two steps, that I would like to be run on one line: twinkle -c then call sip:in06khattab@sip.linphone.org Here is the output: I wanted to perform these two steps on one line, I ...
2
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1answer
48 views

Unix sort by multiple columns

I have trouble understanding unix sort. Consider the following file (tab separated) aa ~ a1 aa B b A b ~ e bb B bb ~ B When calling: cat tmp2 | sort -t $'\t' -k1,2 I get aa ~ a1 aa B ...
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1answer
24 views

Coordinates X237595Y81600 to X2375Y8160

I have create a gerber file and it has lines inside which look like this: X90095Y15350 X100095Y15350 X110095Y15350 X120095Y15350 X120095Y25350 X110095Y25350 X100095Y25350 X90095Y25350 X80095Y25350 ...
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0answers
27 views

Downgrading nvidia drivers in Sles 11

I'm trying to find out how to downgrade my graphic driver? Current Driver nVidida driver : 319.76, Needed Driver: 319.32 Can anyone help me with some steps on how to do this?
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0answers
25 views

TTL Editor Tera Term Macros

I am running TTL editor to send command via ethernt to a control unit to get status data, The problem I have is that part of the test is to shut off for about 20 minutes, I need a command to still ...
2
votes
2answers
57 views

How do I allow privileged commands to fail but respond?

I am reading up on several commands, some of which are privileged and some that may or may not be installed. My system (gentoo) will respond with command not found sometimes when the program in the ...
0
votes
1answer
24 views

Can I treat all what I typed after a command as raw string?

I made a bash func for myself so I can through some words into a tree_hole file, it looks like this in bashrc: function th { echo -e "\n$@" >> /Users/zen1/zen/pythonstudy/tree_hole; } export -f ...
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2answers
57 views

How can I open a man page in a new terminal window?

I'm wondering if anyone can help me with a workflow issue. I sometimes open up a man page for a command, take note of several command options and parameters, go back to the command line and then input ...
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2answers
52 views

Use awk to replace a column without changing format [closed]

I have a PDB file (see below) and I need to change the A in column 5 to a B, AND I need to change it without changing the format of the original file. I was able to change the A to a B using this awk ...
5
votes
4answers
294 views

How to move all files inside present subfolders up here

I have 50 folders with some subfolders too, with more than 1000 audio files total. I need to remove all subfolders and put all files in present level. Tried mv */* ./ but it complaints: argument list ...
0
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2answers
65 views

how to delete files from a specific date and extension

Short and sweet: One of my hosting subscriptions got hacked. I ran this command: find path-to-folder/ -mtime -7 -name "*.php" –print this produced about 11 pages worth of malicious code which was ...
0
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2answers
99 views

Remove all files recursively without deleting directories

I want to "clean out" all of the files a directory including all files in subdirectories but I want to leave the subdirectories in place. My understanding of rm -r is that it will also delete the ...
1
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1answer
60 views

Zip the contents of a folder without including the folder itself

I have a directory called folder that looks like this: folder -> root_folder -> some files I want to zip this directory into zipped_dir, I tried: zip -r ...
1
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1answer
56 views

ss is replacing netstat, how can I get it to list ports similarly to what I am used to?

I've been trying to modernise my way with Linux by, for one thing, ditching netstat for ss. I looked up my favourite command line flag for netstat in the ss man pages, and was very glad to find that ...
1
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2answers
53 views

List the files of another format while finding a certain name pattern

I had wanted to edit the txt files of videoA and videoB only if the movs files names contains the namespace -test For eg. videoDir |-videoA |- videoA_v001_test.mov |- ...
0
votes
1answer
43 views

How to install oddjob-mkhomedir repository on AMI box using command line

I'm trying to install oddjob-mkhomedir and it comes back with no package available nothing to do. I used sudo yum install oddjob-mkhomedir so I'm assuming the repository is not available. My ...
1
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1answer
52 views

split line based on space and delete the second part

I have a big file >fid|29290408|locus|VBIEntCas2262_0001| Phosphoglycolate phosphatase (EC 3.1.3.18) [Enterococcus casseliflavus EC20] ...
1
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1answer
42 views

Broken git autocompletion after I have overridden the git command

Recently git branch <tab> started showing me the following error: $ git branch bash: -c: line 0: syntax error near unexpected token `(' bash: -c: line 0: `/usr/bin/git --git-dir=.git ...
1
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3answers
54 views

Display distinct values of a list and number of occurences

I have a program that writes on the standard output a list of string values, one per line, and I would like to display in real time the list of distinct values along with the number of occurences for ...
1
vote
1answer
42 views

How to zip only files under multiple subdirectories?

I have a folder working and its structure is something like this - working/ 100/ 1/ 2/ 3/ 200/ 1/ 2/ 3/ 300/ 1/ 2/ 3/ And each of these 1 ...
0
votes
1answer
23 views

Insert space at specified position in a file

I have this sample file: 234234|111||J1X0H8|SERP||R|D|666|M 234235|222||J1X0N5|SERP||C||555|M For each line, I need to insert a space after the 3rd character of the 4th column, like so: ...
1
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3answers
65 views

Removing mulitple lines

I am trying to write up a command line interfaces that will removes a particular section / lines of codes within a list of json files. By the way, the json file are located within the sub-folders of ...
1
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1answer
51 views

Save and restore terminal tabs with custom tabs title

I have a Terminal window with a dozen named tabs open *(gnome-terminal) I would like to save the current configuration and have it restored with names and directories. Is there a way to do this? I've ...
1
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1answer
58 views

How to run a command in background always?

the below command when I run from the terminal will keep posting the output to message.log cf logs broker-analytics > /var/www/cfbrokerlogs/message.log However, if i close my terminal it will ...
2
votes
2answers
88 views

Using the output of `grep` as variable in second command

I currently have 2 bash command line strings I use to gather data needed for a certain task. I was trying to simplify and have only one command used to gather the data without using a script. First I ...
1
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2answers
66 views

ls .. doesn't work properly with symlinks

I have directories set up a bit like this ~/code ~/code/src ~/code/build -> /path/to/somewhere/else That last one's a symlink. If I do this cd ~/code/build ls .. then I get the listing for ...