The command tag has no wiki summary.
3
votes
2answers
31 views
Correctly parse arguments in script behaving like a shell called through SSH
I have a server with a very limited used whom I want to be able to run two very specific (and custom) instructions through SSH. In order to do that, I have set the shell for that limited user to be a ...
2
votes
1answer
33 views
command not found handle doesn't work for url
I'm trying to setup the command_not_found_handle for URL links,
%> command_not_found_handle() { echo "OK"; }
%> aaaaa
OK
%> http://www.google.com
bash: http://www.google.com: No such file or ...
1
vote
2answers
39 views
Using Asterisk when Opening Files from Terminal
I have a folder A. Inside the folder, there are some files a,b,c,d and there is a subfolder, B, containing files e,f,g.
Suppose I want to open files a,b,c,d: then I just type xdg-open *. However, ...
3
votes
2answers
91 views
what is the meaning of this sed command?
sed -e 's/72;/72, next_val = 0x11111111;/;/@/{h;s/test/next/g;x;G}'
fmt_vuln.c > fmt_vuln2.c
could you tell me about what is the meaning of ;/@/{h;s/test/next/g;x;G}?
12
votes
1answer
287 views
What does yes $(yes yes) do?
Wondering what use the yes command might be, I stumbled upon this comment, and tried to execute
yes $(yes yes)
From what I understand, this should simply print out an infinite sequence of yes, but ...
3
votes
2answers
101 views
print command instead of echo in linux
I simply can print a message in terminal using linux echo command.
prayag@prayag$ echo "prayag works on JVM"
prayag works on JVM
Can I have the same output with print command.
I actually went ...
7
votes
3answers
108 views
Difference between sudo -i and sudo su [duplicate]
I was wondering what the difference is between sudo -i and sudo su?
2
votes
2answers
42 views
How to list groups with gid in redhat?
I first listed the groups using :
groups
I added group using
groupadd -g 300 oinstall
groupadd –g 500 dba
and then when I do
groups
root bin daemon sys adm disk wheel sfcb
I am unable to ...
0
votes
1answer
48 views
Unable to execute command in the Linux with an user
Two scenarios here.
Sudo rights are given for a particular group.
a. A new user is created and is assigned to the group. b. Using this user, when we execute commands via shell script it is unable to ...
1
vote
1answer
21 views
Linux Red Hat Library Dependencies question
I have to create a script that will download 8 libraries. However, on the server where we have all the libraries, I can only find 2 or 3 of these 8.
I believe these 2 or 3 actually depend on other ...
1
vote
4answers
94 views
How can I force the use of a specific binary when running a script
How can I force a specific binary to be used when executing a bash script?
I have a bash script which uses the "php" binary.
There are several php versions on my computer. The main php binary, as ...
0
votes
1answer
72 views
Linux Mint XFCE, command to launch menu
What is the command that launches the whisker menu in the Linux Mint xfce edition. For another distribution that used xfce it was xfce4-popup-whisker menu but that doesn't seem to work. I would like ...
0
votes
1answer
36 views
In which way is a commented line active in a program file?
To solve the bug reported here the solution seems to be commenting, not just adding a certain line in a file - as explained here and here.
That is - to make that bug disappear in Xfce, a certain line ...
1
vote
4answers
87 views
List all commands that a shell knows
What can I type at my shell (which happens to be bash) that will list all the commands that are recognized?
Also, does this differ by shell? Or do all shells just have a "directory" of commands they ...
0
votes
2answers
59 views
I used the move command and all files disappeared [duplicate]
I was moving all data to another folder and made 1 mistake and run this commmand
mv * /*
all files have disappeared now.
How can I find them? Or are they deleted?
2
votes
3answers
140 views
Difference between 'ifconfig' and 'ip' commands
I read some articles/tutorials on 'ifconfig' command, most of them included a common statement -
"ifconfig is deprecated by ip command"
and suggested to learn ip command. But none of them ...
0
votes
2answers
44 views
The -cp option to the java command [closed]
java -cp FILE.jar FILE.Main inputfile
What does the -cp option mean? For that matter, what a negative sign in front mean? I've searched everywhere and couldn't find the answer.
0
votes
2answers
82 views
What is the Run prompt equivalency in Linux?
In Windows, there is the Run prompt, which you can access with Win+R key.
What is the equivalency to this in Linux? Is there even such a thing or is the Terminal the main prompt you would use in ...
1
vote
3answers
84 views
what is “play” command/package available by default in Linux Mint and how to remove it
I'm trying install play framework on Linux Mint and setup its variable:
export PATH=$PATH:/relativePath/to/play
But command can't run because it's being overlapped by another play command which was ...
1
vote
0answers
36 views
Using alot MUA with nottoomuch-addresses
I try to use the MUA alot to work with the nottoomuch-addresses.sh script for autocompletion of addresses within alot like described in: ...
4
votes
3answers
67 views
How to find a file with specific permission of a specific user?
How do I get a list of all the files which permission is "read and write" for a specific user.
For example, when I go on the desktop of my mac, then right click on file "A", then "get info", then on ...
2
votes
2answers
69 views
Memory usage command with syntax similar to the time command
What command shows the memory usage of a program, i am looking for a command that is simple to use and has similar syntax to the time command. I am trying to find the memory usage of a md5 hashing ...
4
votes
1answer
113 views
What does the command “$()” do in UNIX?
What does the command $() do in UNIX? Could someone explain what is the significance of $ in the below examples;
$(echo var=10)
and
eval $(echo var=10)
0
votes
1answer
77 views
How to run a shell command in a server?
I am fairly familiar with computers and web stuff but this is a bit out of my comfort zone.
I have a shell script (.sh file) I want to run in a Linux server I have one site hosted (the script is a ...
1
vote
1answer
49 views
Execute command supplied by function parameters
I'm trying to create a function method in a bash script that executes a command which is supplied to the method by the paramters.
Meaning somethings like this:
special_execute()
{
# Some code
...
10
votes
5answers
703 views
Delete 100 lines from vi editor using single command
I am using Ubuntu and trying to delete all 100 lines from vi editor but I got interview question of doing this in one command.
0
votes
4answers
215 views
How to create custom commands in Unix/Linux? [closed]
I'm a newbie in Unix/Linux environment. Can anyone guide me to create custom commands in Unix/Linux. Thanks in advance
1
vote
1answer
50 views
Find if a process terminates in a specific amount of time
I am running a program.Inside this program i run a specific command and i use ulimit command to terminate the running of that command if it exceeds an amount of time.To be more clear i run this:
...
1
vote
1answer
87 views
Bash command that uses wildcard in place of folder to copy folder contents of multiple files into one directory?
I have a directory ~/dir that contains a bunch of random folders like: ~/dir/av 801 and ~/dir/lm 320. I want to copy the contents of every inner folder (ie: av 801) into a different directory. The ...
0
votes
1answer
46 views
How can I see the rate of my wireless card?
I am setting manually the bit-rate of my wireless card !
sudo iwconfig wlan0 rate 54M
Where can I see if it is applied, because the command does not give any feedback !!!
4
votes
4answers
257 views
What does <<< mean? [duplicate]
What does <<< mean? Here is an example:
$ sed 's/a/b/g' <<< "aaa"
bbb
Is it something general that works with more Linux commands?
It looks like it's feeding the sed program with ...
0
votes
1answer
80 views
Command “I'm” on linux ubuntu [closed]
I'm new at linux, ubuntu,
and I did type I'm running and then like if it was a program or
something else, I was allowed to write more...
nothing else... I just want to know more about this command ...
-1
votes
1answer
75 views
can't view `split` output files with cat [closed]
File a.txt contains:
1 one
2 two
3 three
4 four
5 five
6 six
Then the command: split -2 a.txt output_ yields as output three new files output_aa, output_ab, output_ac
When I type: cat output_aa I ...
21
votes
3answers
2k views
Why is dmesg called dmesg?
Is there any explanation/history behind the name of the command dmesg (which prints out some kernel messages)?
0
votes
0answers
117 views
I want to use the command 'shutdown -r now' in Lazarus
I want to use the command shutdown -r now in Lazarus, but I don't know how to do it. Any tips or examples that you can give me I would be most grateful.
8
votes
0answers
201 views
how to get exit status from the command before the last [duplicate]
I have solaris machine ( solaris 10 )
please Look on the following simple commands (haconf -makerw | grep -iq "Cluster already writable")
# haconf -makerw
VCS WARNING V-16-1-10364 Cluster ...
0
votes
2answers
95 views
'df' command doesn't list /home directory
In the book I am reading, the output of df command is shown like this:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 15115452 5012392 9949716 34% /
/dev/sda5 59631908 ...
0
votes
1answer
81 views
How to find packages only which package name equal to text with aptitude?
When I want to search a package which named 'z', aptitude find packages which contains 'z' in package name same as 'like' in SQL, so aptitude find a lots of packages.
How can I search packages which ...
0
votes
3answers
181 views
Find executable files recursively
I have got the directory called Test and a few directories inside it. Both Test and the directories inside it have executable files. I'd like to print them with ls. I'd use this command.
ls -l `find ...
1
vote
2answers
128 views
Is it better to pass all files to mv or to run a bunch of mv processes in parallel?
I have three ways of running mv. First:
mv /db/dbfile1 /db/dbfile2 /db/dbfile3 /usb_storage/
and second:
mv /db/dbfile1 /usb_storage/ &
mv /db/dbfile2 /usb_storage/ &
mv /db/dbfile3 ...
3
votes
1answer
709 views
How to see the total progress while copying the files
We know that if we give --progress parameter to rsync it will show the progress of files copied. But issue is that is shows the progress for each single file not total or overall progress.
So how to ...
10
votes
2answers
480 views
What's the reason for this specific “rm” sequence in the xkcd joke?
Here's part of this xkcd comic strip where the idea is that the author can't write a sort program so he adds code to delete all files
system("rm -rf ./");
system("rm -rf ~/*");
system("rm -rf /");
...
3
votes
1answer
66 views
clear full-screen in script and get the previous prompts after exiting script
Today I was using glance tool in my office to monitor CPU utilization.When I run glance from terminal ,the command clears the screen and after all the work when I quit back to the terminal,the ...
2
votes
3answers
596 views
Why does Firefox refuse to die despite killing it with pkill -9?
I am issuing the following command to kill Firefox on my Red Hat Linux box:
[subhrcho@slc04lyo ~]$ pkill -9 -f firefox
[subhrcho@slc04lyo ~]$
However, when I try to invoke Firefox through ...
0
votes
2answers
569 views
Why screen is not splitting my GNOME terminal?
I am working in a remote Linux box using VNC.I have a single terminal with lots of tabs opened in my system. How can I split them using the screen utility? Does the screen utility work with already ...
1
vote
2answers
97 views
Best way to call command within a shell function having the same name [duplicate]
I like to encapsulate commands within shell-functions using the same name. But to avoid the shell-function calling itself recursively, I specify the complete path of the command as the following ...
2
votes
1answer
139 views
Equivalent of pick command in linux
OS: Linux Mint 14
Is there an equivalent of the pick command available in Linux? Pick command is the one where for each given argument, it asks yes/no and prints the selection to stdout. This script ...
1
vote
1answer
193 views
What does sourcing a file mean in a shell? [duplicate]
Possible Duplicate:
Different ways to execute a shell script
What happens when I issue the following command:
source devenv.csh
How does it differ from running it just as devenv.csh ?
2
votes
3answers
262 views
What are commands to find shell keywords, built in functions and user defined functions?
I was discussing with my friend on how the commands are parsed in the shell, and he told me that bash searches the command in following order
List of aliases
List of shell keywords
List of ...
22
votes
2answers
2k views
How to stop the find command after first match?
Is there a way to make the find command to stop right after finding the first match?
