A script is a sequence of commands or instructions that are executed by an interpreter program rather than compiled into a standalone executable program.
3
votes
2answers
36 views
Hybrid code in shell scripts. Sharing variables
This answer discusses how to run a multi-line Python snippet from the command line in a terminal. I noticed that the answer works great within shell scripts, even with nested indentation, which is ...
1
vote
1answer
35 views
Scripting to domain allocation to server
I have two text files:
file #1: domain.txt
cocacola.com
airtel.com
pepsi.com
file #2: servers.txt
192.0.53.42 , 4 # 4 domains already allocated on server 192.0.53.42
192.53.1.2 , 1 # 1 ...
0
votes
1answer
55 views
Counting files on a remote server with ssh and an expect script
Below is my script to take count for files which are present in remote server.
But it is not working. Please help me.
#!/usr/bin/expect
spawn ssh [email protected]
expect "123"
send "123"
interact
...
-5
votes
0answers
40 views
Linux Bash Script [closed]
I am currently in need of a simple Linux script which provides a menu to any user, where they are able to either add or delete a user, where if they choose to add the user they can do so via a text ...
0
votes
2answers
51 views
Executing a program according to the last modified date
I need to write a script which would execute some executables in a directory according to the last modified date. The oldest should run first. How do I do it?
This is what I have done so far
for f ...
1
vote
1answer
96 views
Replacing Evernote with Emacs and markdown - .org file list
I have grown tired of using evernote with wine or with any of the linux clients. I decided to change to Emacs and write all my notes in markdown so I can easily publish them in HTML and sync them with ...
2
votes
2answers
321 views
If Statement with 2 Variables - Bash
I am trying to write a single IF statement which can check two variables at once.
I have two variables, for example:
$VARA
$VARB
Both with either contain a 0 or a non 0 value. I need an if ...
1
vote
1answer
55 views
How to clone a read-only portion of /proc file system
The problem with reading /proc file system is that it is not atomic. I tried using a library (procfs in Python) that wishes to read it, but it has glitches about 5% of the time because the process ...
83
votes
16answers
37k views
Repeat a Unix command every x seconds forever
There's a builtin Unix command repeat whose first argument is the number of times to repeat a command, where the command (with any arguments) is specified by the remaining arguments to repeat. For ...
1
vote
2answers
34 views
Direct recursive shell script output to each subdirectory, not parent directory
I'm processing a batch of subjects data recursively, calling the script within the parent directory.
For example, I have the parent directory:
/home/subjects
and the subdirectories which contain ...
-1
votes
0answers
46 views
shell scripts in linux [closed]
The "time and network" script
•Find the current time.
•If the current minute-of-the-hour is greater than 30, then use ifup to enable all network interfaces, otherwise disable all network interfaces ...
3
votes
3answers
66 views
CD into directory from HISTORY in a bash script or alias e.g. $(!!)
I often want to change into the directory of a file on my file system, but I'm not sure where the file is.
I search for it like so:
find -type f -name "myfile.txt"
Lets say for the sake of ...
2
votes
1answer
32 views
Invoking a script with ld-linux.so?
I just downloaded a tar file that is supposed to include everything required to run a program that we can call some_binary. I extracted it's contents, and I see the following:
A binary (let's call ...
2
votes
1answer
145 views
vim auto complete custom list
I had these two questions about this function
" how do I load a file into a list here?
" set some variable
func! CustomComplete()
" and then read the variable here so that b:list = a \n split ...
2
votes
1answer
99 views
How to change Vim's command type mode programmatically?
Is there a simple way to switch from one command type mode to another without loosing the current command line?
In my ~/.vimrc file I remap the <space> and <c-space> character, coming ...
2
votes
1answer
74 views
Script to check a folder, print the files then delete those files
I am looking for some guidance on creating a script that will check a specific folder, print all documents (if any) and then delete those documents. I would also like to run this script as a cron job. ...
1
vote
1answer
439 views
grep output of expect script
I'm trying to run some expect language, and grep/parse the output all in one script. I want to grep the output of and look for "error" (I should note that standard linux commands like awk, sed, grep, ...
2
votes
4answers
677 views
cut / grep and df -h
How can I grep or cut the "173G" under "Verf"?
I need this for Unix scripting in school.
jonas@jonaspc:~/$ df -h /dev/sda2
Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf
/dev/sda2 ...
0
votes
1answer
41 views
How to get the arguments to a php function via grep?
I am writing a script to let me know the database login info for each PHP-based web site on a server that I am migrating. The login information is usually done either like this:
...
5
votes
3answers
2k views
Storing output of command in shell variable
I have an operation using cut that I would like to assign result to a variable
var4=ztemp.xml |cut -f1 -d '.'
I get the error:
ztemp.xml is not a command
The value of var4 never gets ...
1
vote
0answers
18 views
rsstail Not Printing Output
I've installed rsstail 1.8 on my linux box and everything seems to be going smoothly, knock on wood, except for the part where rsstail isn't printing the streams. Running the command, I see that it's ...
5
votes
4answers
158 views
How to remove multiple blank lines from a file?
I have some text-files I use to take notes in - just plain text, usually just using cat >> file. Occasionally I use a blank line or two (just return - the new-line character) to specify a new ...
2
votes
2answers
65 views
What scripting language can I use to automate a concatenation & zipping process?
For a project I'm doing I need to concatenate and compress (with zip) many (midi) files and compare their sizes. I've thought there must be some language that allows me to do something like this:
...
1
vote
1answer
33 views
Why ssh -nq -t can't see my environment variable?
I am executing a command on remote machine with -t flag ( to prevent the command from 'blocking' ) the prompt (somehow it works that way). So I am using ssh -nq -t root@ip but with this, the script ...
2
votes
2answers
87 views
How to consistently start Vim's command line to make a mapping work in any mode?
I try to normalize access to Vim's command line mode from any other mode in order to simplify my actual mappings. For example to make the <f6> key work from anywhere I define the following ...
1
vote
3answers
307 views
Evalute passed in variable in bash
Is there a way to pass in a variable as an argument to a bash script and have it evaluated scoped by the bash script?
Given:
# cat /path/to/file/of/host/names
bob
tom
joe
etc...
# dofor
FILE=$1
...
0
votes
1answer
21 views
While setting up SFTP between *nix servers, is the intial handshake optional?
I setup SFTP between *nix servers as follows:
Generate the Public key on the sending server by running the below command:
[user1@server1] $ /usr/local/bin/ssh-keygen -t rsa -b 1024
Then copy ...
1
vote
4answers
453 views
Checking if a file exists in several directories
I've been working on this far too long and need some help.
I need a script that will look at files in a directory and see if it exists in one of several directories.
I need something like this:
for ...
1
vote
1answer
326 views
Script that unpacks a initrd, allows editing of the preseed.cfg and the packs it to cpio and gzip again
I want to program a script that allows what is said in the title. So basically I gunzip the initrd, than unpack the cpio, open vi to allow editing, save, pack with cpio, and gzip again, so nothing ...
2
votes
1answer
35 views
Bash: pair up two series of files
I have a number of files with this pattern:
file1_foo.ext
file1_bar.ext
file2_foo.ext
file2_bar.ext
and so on.
I need to "pair them" and put them in a file like this
file1_foo.txt ...
2
votes
4answers
109 views
store and execute redirection/piped command in script
How do you store, and later execute, a command with redirection and and a pipe? (And is it the pipe, or the redirection, or both, that's causing my problem?)
I tried to print the urxvt version in a ...
1
vote
2answers
264 views
Import single rows from SQLite to MySQL?
I need to do some kind of incremental import again and again from a SQLite 3 database to a MySQL database. Column names are the same in both databases. Is there a good way to do this by a script ...
2
votes
1answer
78 views
Increase %e precision with /usr/bin/time shell command
When I run the time command in shell time ./myapp I get an output like the following:
real 0m0.668s
user 0m0.112s
sys 0m0.028s
However,when I run the command \time -f %e ./myapp I lose ...
0
votes
2answers
52 views
Ubuntu crontab php not working
Yes, I have read many, many documentations but I can't get it to work. I have a simple single php file which I want to run once or twice in a minute. My php file is called: cronjob_refresh.php and I'm ...
0
votes
2answers
72 views
Automated ssh-keygen without passphrase, how?
I would like to make an automated script that calls ssh-keygen and creates some pub/private keypairs that I will use later on. In principle everything works fine with....
ssh-keygen -b 2048 -t rsa -f ...
-2
votes
1answer
225 views
ASCII art generator
My friend bet me that I couldn't hack his computer (I already did it, but he just didn't realise yet).
So I'm looking to a ASCII art generator (text preferable, images will do it too) in the sl ...
2
votes
1answer
38 views
How would a script know when running locale-gen is necessary?
One of the basic steps in setting up a new system is getting the right glibc locale files generated. At least in ArchLinux and Gentoo, one is expected to do this step by hand. I am trying to setup a ...
5
votes
3answers
3k views
Processing bash variable with sed
Been banging my head off a wall on this
bash variable LATLNG contains a latitude & longitude value in brackets like so
(53.3096,-6.28396)
I want to parse these into a variable called LAT and ...
3
votes
1answer
39 views
How to edit files in-place while performing operation on the values matching the searched pattern?
Given a list files containing random text and many datetimes in ISO format in it (e.g "2012-07-02T10:47:24+02:00"), how can I find all these datetimes and add 2 hours to each one ?
Ideally a solution ...
1
vote
2answers
36 views
Automate input procedure to a binary file
I have a binary file on Unix, which when executed asks the user for inputs. The inputs to this binary file are given manually. I want to automate the procedure, since I know the inputs already. I ...
3
votes
3answers
125 views
Split PDF into documents with several pages each
There are several resources on the web explaining how one can split a PDF into many files with on page per file.
But how can you split them into chunks of, say, five pages each? I have looked into ...
11
votes
1answer
963 views
Making a progressbar with “dialog” from rsync output
I'm looking for a way to filter/redirect rsync output in a manner where it can be fed to the "dialog --gauge" command, so I can get a nice looking progressbar during file sync.
Currently I have only ...
1
vote
1answer
88 views
Securely reading and parsing a string from a parameter or file in bash
I've been writing a number of bash scripts lately which get variables from a parameter or from a file. Some of the scripts run as root (using sudo)
This is on my notebook, so there aren't any other ...
3
votes
1answer
85 views
Searching for Failed attemps in /var/log/secure
I'm currently writing a script to examine /var/log/secure file and report how many failed attempts there were that day. I need to output it in the following format:
Date: 03/15/10 Time: 10:30 Number ...
0
votes
1answer
105 views
How can I find and filter a specific column in a .csv file? [duplicate]
I have .csv files with the following structure:
cat,dog,mouse,pig,bird,cow,...
21,34,54,566,78,1,...
23,10,12,569,56,4,...
32,20,13,123,56,3,...
34,30,44,322,66,2,...
I want to filter the column ...
13
votes
7answers
4k views
Faster way than ping for checking if computer online?
I'm writing a wake on lan script for a set of our lab computers. We have sqlite db with a list of the computer hostnames, IPs, and MACs and currently I ping each of them with '-c1' so it doesn't run ...
1
vote
4answers
98 views
Where to put a background script
I have a script that i want to be constantly running in the background but I don't know where to launch it from
If I put it in .bashrc it will run multiple times (one for each login)
It's an ...
1
vote
1answer
36 views
Sort aligned columns
I have a program which output looks like this
# Status VAL1 VAL2 Description
1 some text 2.5 4.4 Some long other text
5 some text 2 14.5 2.0 Some long other ...
7
votes
1answer
202 views
Problems running python script from motion
I'm trying to set up the raspberry pi with my webcam as a motion detecting cctv that uploads the videos to google drive using Jeremy Blythe's script
I have motion working correctly and the python ...
0
votes
0answers
29 views
A simple script to make a desktop version of Nimbuzz WebChat? [closed]
There is a nice little script which uses python-webkit called "RGB/HEX Color Picker" here: http://gnome-look.org/content/show.php?action=content&content=128317
I tried if I can use it to make a ...
