A script is a sequence of commands or instructions that are executed by an interpreter program rather than compiled into a standalone executable program.
2
votes
1answer
13 views
Script. How to sort and move catalogs
I have some trouble writing a script. I don't know how to sort and move catalogs.
#!/bin/bash
while read -r line; do
mkdir "sd/$line"
done < 1a.txt
After reading information from 1a.txt ...
4
votes
3answers
50 views
Generating diagrams (in PNG or JPG) from console?
From these data I can create a diagram in OpenOffice:
$ cat time.log
2014-04-29 08:15:34 1.00
2014-04-29 08:15:36 1.00
2014-04-29 08:15:42 1.50
2014-04-29 08:15:47 2.00
2014-04-29 08:15:55 2.00
...
1
vote
1answer
29 views
bash scripts - remove duplicate rows with smaller value
Here is an example file:
1 5 20 40 60
2 1 20 20 20
2 2 30 30 30
4 5 40 40 40
7 2 50 30 30
7 1 20 20 20
I would like to remove duplicate rows (with the same value in the first column) with a bigger ...
2
votes
2answers
24 views
How to format textutil -excludedelements
I use Geektool on the Mac to display various information on my desktop. One feature of Geektoool is the ability to use shell mode to launch custom scripts or commands. I am not versed in any type of ...
0
votes
2answers
42 views
Change motd value in UNIX Operating System
I need to change the value of MOTD using a script but I do not know how I should start. Am attaching sample MOTD if anyone can help.
...
1
vote
1answer
24 views
How to add a dot to particular lines in LaTeX-document?
I have a LaTeX-document where I have lines of the form
\section*{3.1}
\addcontentsline{toc}{section}{3.1}
or in general
\section*{x.y}
\addcontentsline{toc}{section}{x.y}
for x between 1 and 31 ...
1
vote
1answer
24 views
Script or command to replace default parameters in /etc/user on AIX
I wanted to change the parameters settings in /etc/security/user file in AIX OS using a script. This is the sample user file.
default:
admin = false
login = true
su = ...
0
votes
2answers
53 views
Different forms of executing a shell script
There are a few similar questions around that I've already seen, but I've come up with something different.
I'm reading this http://www.tldp.org/LDP/abs/html/invoking.html and I got confused when I ...
2
votes
1answer
48 views
How to make a bash script wait till a pendrive is mounted?
I have a bash script which has a line cd /run/media/Username/121C-E137/ this script is triggered as soon as the pen-drive is recognized by the CPU but this line should be executed only after the ...
-2
votes
1answer
46 views
Comment multiple line using SED
Seeking help how can i comment multiple lines using SED, i like to comment ftp, telnet, shell, time, ntalk, daytime in inetd.conf file. Thanks in advance
0
votes
0answers
36 views
Java auto updater & bin bash scripting [closed]
I'm rather new to shell scripting, and I've created a small semi-automated Java updater script.
#!/bin/bash
response=$(wget --spider -S --no-check-certificate --no-cookies --header "Cookie: ...
-2
votes
1answer
21 views
I want a script to do following simple task?
My input is :
a
a
l
a
c
g
b
c
... and so on rando alphabets.
A command or a awk statement which will give me:
a-1
1-2
l-1
a-3
c-1
g-1
b-1
c-2
basically counter for all alphabets and ...
5
votes
1answer
62 views
Save password in bash script for multiple queries
I would like to know if there is a safe way to only be queried for a password once in a custom bash script, and then save it somehow to be used for later needs. At the end of the script it should be ...
2
votes
1answer
34 views
I'm trying to count and print song file names using awk as following
RANK NAME BAND YEAR GENERE DOMESTIC/INTERNATIONAL
206:Reach Out, I'll Be There:The Four Tops:1978:Pop:3/2
207:Bye Bye Love:The Everly Brothers:1950:Classic:3/2
...
2
votes
2answers
19 views
Capture transcript of program with redirected input and output
A typical interaction for a program I've written might look like this:
Enter command: a_command
Completed a command
Enter command: another_command
Completed another command
I typically run my ...
2
votes
1answer
33 views
Switching between 2 windows on Linux
Hi I need to switch focus between two windows periodically and automatically (with software or w/e). Can this be achieved on linux?
1
vote
1answer
34 views
linux if else fails for some IP's
i am using the following code with if then to mount. It works for some IP's, it does not work for some IP's especially for FAILURE statement.
Here is the code
is_mounted() {
mount | grep -qohw ...
3
votes
2answers
168 views
Shell script wait for background command
I am writing a script, but there is something I need that I can't find a way to do it...
I need to make a command in background "command1 &" and then somewhere in the script I need to wait for it ...
4
votes
2answers
39 views
Faster way to rename duplicate files (identified by fdupes) in another directory?
I have a directory full of pdf files of journal articles, most of which are named by their bibtex key. Some time ago I made a backup on an external hard drive, but I haven't kept it up to date and ...
0
votes
2answers
48 views
Is it possible to cache external binary in a shell script?
My question, might sounds a bit strange, but this morning I read this question:
Why is “echo” so much faster than “touch”?
I perfectly understand the concept of built-in function, but I wonder if you ...
3
votes
2answers
97 views
Does cron know that the instance to be scheduled is already running?
I was wondering if we add a job in the crontab e.g. to run every 5 mins and the job does not actually manage to finish in 5 mins, does the cron daemon know that the previous instance is already ...
3
votes
0answers
33 views
Control browser from command line [duplicate]
I have an old router that I have set up as an AP on my home network. For some reason it loses connectivity every few days and needs a reboot.
I would like to set up a script to run once every night ...
-2
votes
2answers
51 views
How to delete a directory from terminal?
I'm trying to delete a directory after a series of events take place. That being said, I need to be able to place this in a file to execute once said events take place.
0
votes
1answer
42 views
Script: Running a second process when the firts ended
I am trying to make a script that consist in a two parts. the first one is to run a initial state and the second one is to equilibrating the system. The problem is that the second is dependent of the ...
0
votes
2answers
89 views
Scripting Language Evolution [closed]
I have an assignment due Monday and I need some help because I have no knowledge on the subject and can't even understand what to search exactly. I am not waiting for an essay or something just some ...
2
votes
7answers
81 views
Sort the files in the directory recursively based on last modified date
Sort the files in the directory recursively based on last modified date
I have modified a lot of files in my directory want to know what are those files by sorting them by the last modified date ...
5
votes
3answers
265 views
How to rescale several images to same size
I have several image files in a directory. These images are similar size and have same background color.
How can I make all images same size by adding background like this attached image?
1
vote
3answers
55 views
awk want to total by hour and variable
I am able to run this and it works fine - note: field $1 is a time/date stamped field..
gawk -F ":" "{ print $1 }" /cygdrive/c/counting/ourlog | sort | uniq -c | sort -r
57339 2014-03-21 09
54290 ...
4
votes
3answers
195 views
Execute a command on user logon
In Linux desktop system, I want to execute a command when the user logs in.
After reading some other posts, I tried to insert the command in ~/.bashrc but unsuccessfully. Moreover, the system uses a ...
1
vote
1answer
44 views
Cron task in graphic interface
I need to open one (or more) browser tab periodically and I decided to use cron.
The command in the shell (bash) that correctly executes this task is chromium-browser http://mysite.com. If I type it, ...
-1
votes
2answers
42 views
Rename filename.JPG to filename .jpg recursively [duplicate]
Rename filename.JPG to filename .jpg recursively
I want all the files with .JPG extension to be changed as .jpg
0
votes
0answers
15 views
I want to execute a shell script on an Android device when it boots up [migrated]
I want to run a shell script on my Android device every time it boots.
What do I need to do?
The script is stored on the MMC of the device and looks like this:
#!/system/bin/sh
...
1
vote
1answer
49 views
how to check if mysql table is used or an application accesses the table in shell script?
A shell script is doing dump for a mysql table, but before dumping the table I want to check if this table is used by any other application. If so, I want to wait and enter in a loop until the ...
2
votes
1answer
42 views
Beginner question about bash “for loop”
When I do,
for ((i=0; i<"${ARRAY}"; i+=2))
do
echo $i
echo ${ARRAY[$i]}
done
echo $i works as I expected, also echo ${ARRAY[0]} works, but with $i as iterator i see only blank lines. How ...
1
vote
1answer
81 views
Convenient way to check if system is using systemd or sysvinit in BASH? [duplicate]
I am defining common bash files which I want to use across different distributions. I need a way to check if system is using systemd or sysvinit (/etc/init.d/). I need this so I run appropriate ...
4
votes
4answers
160 views
Bash Scripting : Printing column data in the same row
I have written a bash script to calculate the size of a PostgreSQL database and print the output along with the date when the script was executed in a text file. The script code is as follows:
...
3
votes
2answers
43 views
Bash script : help file inside the script or in a different file?
I'm writing a script that has the vocation to be a fully featured program at the end. As far as I know, BASH is enough for his purpose (manage PPA's, kinda like Y-PPA). I would like to know how to ...
1
vote
1answer
28 views
Wait until no incoming network connection for N minutes, then execute a command
I want to put my Debian Wheezy home server to sleep, if it wasn't accessed through the network for a certain amount of time.
I thought of a bash script that uses netstat to count the number of ...
1
vote
3answers
127 views
Delete files with same name at the end of the file
Delete files with same name at the end of the file
i have a lot of files in my folder and sub directories like
ajax_hostel_room_master.php.php class_hostel_registration.php.php
...
1
vote
1answer
62 views
Can Start Service With init.d script, however doing service <SERVICE_NAME> start does not work
I am running CentOS 6 and I am trying to get my Oracle database to run at startup. I have been following these steps:
...
5
votes
1answer
171 views
When is it important to write portable scripts?
Most code I write is in PHP. I have recently started learning shell scripting. Most of the resources and tutorials that I've come across are specific to Bash. Some warn about bashisms and some don't. ...
3
votes
5answers
173 views
How can I force a script to use more resources?
I'm running a very time-consuming script which takes many hours to end. Watching top I see that it's only taking 5% of the CPU at best, usually around 3%.
Is there any way to force the script to use ...
1
vote
0answers
34 views
Logging into multiple SSH servers as root and create an user with same power as root does [closed]
I need a script from which I can log into multiple servers as root (but not all root passwords are same;there are 3-4 different root passwords) and make a superuser (user with same access as root) but ...
6
votes
1answer
88 views
A shell-like environment for binary processing
This question came to me a couple of times before, now in response to the question
Loop through binary data chunks from stdin in Bash
Answers given in ...
0
votes
2answers
30 views
Help With Simple Script - Absolute, Relative Paths
I'm trying to execute a mono application, without requiring the user to type in 'mono filename'. It's just one line of code:
mono ./Bin/jobshop.exe $1 $2 $3 $4 $5 $6 $7 $8 $9
It works great, so ...
2
votes
4answers
56 views
Wrapper command that runs program in temporary directory and deletes it after execution [duplicate]
I want to write a command that:
takes another command as its arguments
does a 'cd' to a temporary folder
executes the command passed in the arguments
removes the temporary folder afterwards
...
1
vote
1answer
56 views
How do I rename lots of files on a directory without changing their extensions? [duplicate]
I have a problem! I have a bunch of image files with extensions. Jpg and. Png. I wrote a script that renames the files, changing their names in a pattern followed by a number like this:
...
...
2
votes
3answers
97 views
creation of user add
I'm having more then 59 servers I need to create a script for user add.
purpose: if I'm creating a user in one server it will be reflected on all 59 servers. How can I accomplish this?
0
votes
0answers
56 views
replacement script multiple targets
I have this input file
Name=code_229633_138;isoforms=1
Name=code_229633_138
Name=code_229633_138;Target=R77_09738T0
Name=code_230519_1;isoforms=1
...
3
votes
3answers
343 views
if/then/else man page
I would like to know if there is any man page documenting the construction of the most basic script commands like if/then/else, while, for each, and all the relative switches, like -eq, -e, -ge, and ...