A script is a sequence of commands or instructions that are executed by an interpreter program rather than compiled into a standalone executable program.

learn more… | top users | synonyms (1)

0
votes
2answers
27 views

Simple server that triggers script and responds

I need to have a very simple server running that can: Take rest call. It triggers a script when a call is made The script checks if database is running or not. If running then reply back to client ...
1
vote
1answer
32 views

Expect script: remove password on private key

I'm trying to remove the password on a private key. Doing it by hand is simple, I run this command and enter the password : openssl rsa <newkey.pem > newkey-no-password.pem I'm trying to do ...
3
votes
3answers
2k views

Check whether files in a file list exist in a certain directory

The runtime arguments are as follows: $1 is the path to the file containing the list of files $2 is the path to the directory containing the files What I want to do is check that each file listed in ...
1
vote
1answer
23 views

How do I obtain the kill signal / message / reason within a script?

I am using the following trap: trap OnExit EXIT And in my OnExit function I would like to capture all the info I can on what happened so I can write it to a log file. Id like to know who, why, how, ...
2
votes
0answers
36 views

Remote script cleaning up

I run a remote script using ssh: local script: local_command ssh -p 222 user@server 'sh -s' < ./remote_run.sh remote script: some_command & sleep 10000 trap 'echo exiting' SIGINT SIGTERM ...
4
votes
5answers
1k views

Using $? in an if statement

function foo { (cd $FOOBAR; <some command> if [$? -ne 0] then echo "Nope!" else echo "OK!" fi ) } I am trying to write a function like the one above and place ...
0
votes
2answers
77 views

set variable options with dot

I'm trying to interface with a system not managed by me that is doing some Unix command scripts and command to easily execute a job. There is a variable substitution that doesn't work and I wonder if ...
2
votes
1answer
43 views

How to simulate user interaction when running another script

I am new to shell scripting. When I want to run a bunch of Linux commands I do fine, but how do I give user input when another script is called and asks for input while it runs. Here is the situation ...
2
votes
4answers
234 views

Inserting a line in a file only if this line isn't yet part the file

Total newbie to shell scripting, I am searching to create a script to automatically apply some custom configuration to text based configuration files. In the present case, I am searching to add 2 ...
4
votes
2answers
100 views

Replace common values in two files according to first column

How do I replace common values in two files according to first column? I have file 1 (1.txt): CH063_01084 CH063_01083 CH063_13925 CH063_14473 and file 2 (2.txt): CH063_01083 FGSG_16349 4 ...
2
votes
4answers
114 views

How to initialize an array using awk and bash?

I am trying to store values of the first line of a text file into an array. Here is what I have so far: arr_values=() awk ' NR==1 { for (i=0; i<=NF; i++) ...
3
votes
2answers
80 views

Variable assigned inside ssh command doesn't return proper value

I'm executing the below command in the ssh part of my script. The command is meant to cut the file size from ls option and storing it to a variable. Then print the variable: echo "Enter srouce file"; ...
2
votes
1answer
518 views

What is wrong with this code?

I have a script that goes like this: while : do Start_Time=$(date +"%s") MAIN PROGRAM GOES HERE (CROPPED TO SHORTEN THINGS) Run_Time=$(( $(date +"%s") - $Start_Time )) if [[ ...
2
votes
1answer
47 views

What does the period indicate when an environmental variable is set like “VARIABLE_NAME=.”

What does the period indicate when an environmental variable is set like VARIABLE_NAME=.
2
votes
1answer
672 views

Quickly check whether many network hosts are up-and-running

Objective: check if a host is up-and-running on the network, with a method that can be efficiently parallelized over many hosts. Emphasis on a QUICK turnaround of the check. Reason to emphasise ...
1
vote
1answer
42 views

Why isn't this XMLStarlet Query Working?

I'm trying to write a simple bash script that parses price info from the ebay developer API search results. Here's an example of XML search results for "Detective Comics 700": ...
19
votes
5answers
5k views

Using while loop to ssh to multiple servers

I have a file servers.txt, with list of servers: server1.mydomain.com server2.mydomain.com server3.mydomain.com when I read the file line by line with while and echo each line, all works as ...
3
votes
3answers
144 views

Howto run interactive commands, as another user

I'm trying to write a bash script that context switches to another user (root, in this case) executes a set of commands to i. create a user (interactively prompting invoker for username) then ii. ...
6
votes
1answer
242 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 ...
3
votes
0answers
33 views

How to make a PAM substack “requisite”?

For the auth section of my PAM configuration, login and mdm etc. call common-auth. I have common-auth calling the following as a substack (as auth substack krb5ldap-cache-auth): auth optional ...
0
votes
2answers
27 views

Write log for a false statement of an if condition which returns exit 2

I have a script running every 5 mins with two exits in a condition clause. #!/bin/bash date=$(date +%Y) if [ $date -eq '2014' ] then echo "Current year is $date" exit 0 else echo "Current ...
2
votes
3answers
233 views

Comparing text files using Bash and AWK

I have two text files, and I want to compare their corresponding values according to their rows and columns. By comparing, I mean to check if the values are equal and echo if the values are the same ...
1
vote
5answers
44 views

grep for text that may or may not be present

Lets say I have a file batman; robin; superman; password = ""; wonderwoman green lantern if I want to check if there is a password present, i.e there is something entered in the "" . here is an ...
1
vote
1answer
29 views

Assign diff -y column names

I have two files and a shell script. File 1: Batman Superman John Snow Jack Sparrow Rob Stark File 2: Batman Ironman Superman Spiderman John Snow Arya Stark Jack Sparrow Rob Stark The hound ...
5
votes
4answers
8k 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 ...
0
votes
1answer
51 views

How to execute grep in tcl for getting XYZ-123 type pattern

can I execute this grep command in TCL? grep '[A-Z][A-Z][A-Z]\-[0-9][0-9][0-9]' file1 > file2
1
vote
2answers
418 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 ...
1
vote
2answers
38 views

What does this regular expression do?

I have been provided a %post script inside a spec file to edit a config file (called foo). I have ben tasked with writing another, almost identical script to edit a file called 'bar'. While my ...
0
votes
1answer
57 views

How do I log out/disconnect from SSH after starting a process with output to keep it running? [duplicate]

I ran a script from the command line today (php, not sure that matters) which has output I wanted to watch but I had to go home before it finished and I couldn't figure out how to exit without killing ...
-1
votes
1answer
34 views

How can I search for a user account in various sudo related config files?

I'm a scripting newbie...and I would like to search multiple servers for user ss7459 in the following files /etc/sudoers, /etc/sudoers.d/itse, /etc/sudoers.d/dbas and /etc/group. NOTE: The numbers ...
1
vote
6answers
79 views

Is there a way to find out the number of lines from a command output?

I am trying to compare command outputs between two servers. I want to find out the number of lines from the output of commands such as ls -l. Is there a way to do so? So far I have not found anything. ...
1
vote
1answer
36 views

gphoto2 hook scripts - a guide?

I posted this on raspberrypi.stackexchange but was directed here. I'm new to Linux / Unix, and I'm trying to get a tether / display script going with gphoto2. gphoto2 --capture-tethered ...
3
votes
5answers
226 views

How do I extract the content of quoted strings from the output of a command?

I have output from VBoxManage list vms which looks like this: "arch" {de1a1db2-86c5-43e7-a8de-a0031835f7a7} "arch2" {92d8513c-f13e-41b5-97e2-2a6b17d47b67} I need to grab the names arch and ...
0
votes
1answer
56 views

feeding the password without any terminal window (stdout)

I have a command like this: echo "12345" | sudo abcde where 12345 is supposed to be the root password and abcde a program or a command. I have a shortcut which runs this command. I have tested the ...
4
votes
7answers
4k views

get numeric ASCII value for a character

I'm trying to write a shell script which asks for an ASCII character in the range A-Z or a-z and returns its equivalent numerical value. For example, the output might look like the following: ...
1
vote
2answers
47 views

How to convert text or character to hex in korn shell

Does the unix korn shell provide a function to convert text or character to hex eg. hex 31 32 37 33 34 35 35 36 36 37 value of characters 1273455667 Here i have written the code to display but i don't ...
3
votes
2answers
65 views

Error when calling mv with wildcards

#! /bin/bash error_text=$(tail -n +1 /path/dir/folder/exc/a/update/Abd/ER/* | \ grep 'Warning\|Loaded\|Event') echo $error_text nc 10.10.99.45 25 << EOF ehlo mail.abc.pvt mail from: ...
0
votes
0answers
23 views

xdotool random/more natural delay?

For automated testing of some applications, I would like to emulate the users behaviour. I know I can user the xdotool type --delay option, but I would like a more natural delay. The easiest thing ...
3
votes
3answers
57 views

Print a string including single quotes and other special characters

How can I write this with an AIX script correctly? My requirement is to write this command in test.txt: clock=$(prtconf -s | awk '{print $4,$5}') I tried this command: print 'clock=$(prtconf -s | ...
3
votes
2answers
71 views

Checking the status of custom services with a script

I have a handful of shell scripts that start WebLogic managed servers. I need to design a master script that does the following: Executes the shell script for a component\managed server Checks to ...
0
votes
1answer
89 views

SQLPLUS withing shell script loops

Hello I am trying to run a loop and get the details of a project. I have these projects in my work space. How do I loop over the SQL code? #!/bin/bash workspace=$(sudo locate -r '/workspace$') ...
1
vote
3answers
268 views

Bash script for automatic tar backup of chosen files and directories

Within a given directory in linux environment, I need to pick all files modified after a certain date (let's say 7 days) as well as all directories (only in root directory, hence non recursively) ...
0
votes
0answers
21 views

shell script for executing mux verilog code

I have a verilog file mux.v and testbench muxTB.v. used ifdef caeses for behavioural model ifdef struct for structural model I have executed these files using the commands iverilog mux.v muxTB.v -D ...
0
votes
2answers
97 views

Linux - Delete last two files automatically

In Linux, one folder is created every morning and 5 files are created in that folder. At the end of the day (Midnight), the last two files in that folder have to be deleted. How can I accomplish ...
0
votes
1answer
53 views

Is there a way of copying only directories and not files in bash? [closed]

I want to copy only directories from a folder on a remote server to my server. Is that possible? Here is the code I have so far but it copies files and folders: scp -rq ...
3
votes
5answers
118 views

Look if a folder has some files of certain extention

Lets say I have a file structure: $ cd /home/Desktop $ ls -d */ Abc/ Qwe/ Zxc/ Rty/ $ Now I want to iterate through every directory and look if they have any .pdf files. Could some one please ...
2
votes
4answers
1k views

Loop with 2 variables in a bash script

I am trying to utilize an API. I need to either do some type of "for loop" that replaces or utilizes 2 variables... In pseudo.. # Declare New Servers newserver=( box001 box002 box003 box004 box005 ...
0
votes
1answer
90 views

How do you keep the password hidden when invoked during the su command?

This is the first time it has happened to me where I am using the su command and it actually displays the password on the terminal and doesn't stay hidden. Here is my code snippet: sshpass -p ...
0
votes
2answers
62 views

Simple Script to setenv tcsh or export bash

I am having problems with simple scripting, my Box is CentOS so bash is the default shell, now I wanted to send a line via setenv (tcsh) and would like to make a script that will ask me to input a ...
0
votes
1answer
60 views

script to compare two string “foo” and “bar”

I'm going to create a script that should print "foo" or "bar" when a user's input is "foo" then print "bar" or when the user's input is "bar" then print "foo", otherwise show "invalid string". Here's ...