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

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39 views

Configure localtime. dpkg-reconfigure tzdata

I'm using this to configure localtime: dpkg-reconfigure tzdata It is ncurses interface. I'm looking for the way to programming this. Is there true way without user ncurses interface? How to ...
0
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1answer
318 views

Using alias in another script (ksh)

I'm writing a ksh script, and I'd like to use a command define by an alias in my .profile file, in my script. I tried this command in the folder containing my script, and it works. However, in my ...
0
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1answer
428 views

How to execute Netscaler commands through a remote machine via SSH connection

I have been trying to execute some NetScaler commands like "bind" & "unbind" through a Linux Box via an SSH Connection. Now the Problem is, Manually we are able to enter & execute commands on ...
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4answers
1k 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 ...
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1answer
55 views

Run terminal commands from within LibreOffice's Basic programming?

Is there a way to run system commands in LibreOffice Basic macros so that macros will be able to do things outside LibreOffice (e.g. changing keyboard layout)?
2
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1answer
113 views

Convert xml subtitle file to srt format

I have a xml subtitle that looks like this: <?xml version="1.0" encoding="utf-8" ?><transcript> <Item from="1.16" duration="4.68"><![CDATA[(Dong-hyuk is coming to see you now.) ...
2
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1answer
46 views

diff two directories for changes and format output to use for script

I currently try to monitor two directories and subdirectories for changes in files. The directories contain the same set of files, some of them are changed. So I thought I might use the diff command ...
4
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2answers
11k views

Can I fix bad blocks on my hard disk with a single command?

I'm working on fixing the errors in my Hard Disk, It's possible to do that manually but it might take hours. After typing this command sudo badblocks -b 512 /dev/sda, I got hundreds of results and I ...
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1answer
50 views

Launch RDP silently?

I currently use the following command to launch an RDP session which works fine: rds@rds:~/Downloads/FreeRDP$ xfreerdp /v:farm.company.com /d:company.com /g:rds.company.com /f /u:username /p: At ...
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3answers
170 views

How to read the file line by line and to print the previous line where the file contains a single token

For example my file is like: 59 6 18 2014 169 7 14 2 7671912 7849744 201 4 60 6 19 2014 170 5 49 2 7671912 7849744 201 5 61 6 20 2014 171 6 8 2 7671912 7849744 201 6 62 6 23 2014 174 5 3 2 7671912 ...
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4answers
2k views

Universal Node.js shebang?

Node.js is very popular these days and I've been writing some scripts on it. Unfortunately, compatibility is a problem. Officially, the Node.js interpreter is supposed to be called node, but Debian ...
2
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1answer
132 views

What is the difference between filename=${1:-/etc/hosts} and filename=/etc/hosts? [duplicate]

What is the difference between filename=${1:-/etc/hosts} and filename=/etc/hosts? For example: filename=/etc/hosts if [ -r "$filename" ] && [ -s "$filename" ]; then md5sum $filename ...
2
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1answer
63 views

SSH Command behaves differently in Expect Script

I'm using this command on Server1 ~# ssh root@Server2 /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys to append the contents of Server2's id_rsa.pub to the authorized_keys of Server1. It ...
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1answer
59 views

Change a value in a config file, or add the setting if it doesn't exist?

When modifying config files from the command line, I often want to find the setting in the config file and modify that line if that setting exists. If that setting doesn't exist, I want to add it to ...
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2answers
31 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 ...
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1answer
34 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 ...
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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
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1answer
24 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, ...
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0answers
38 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 ...
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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 ...
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2answers
81 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
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1answer
49 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 ...
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4answers
242 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
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2answers
103 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 ...
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4answers
126 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++) ...
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2answers
88 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
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1answer
520 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
48 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=.
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1answer
49 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": ...
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5answers
6k 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
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3answers
147 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. ...
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0answers
34 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 ...
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2answers
28 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 ...
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3answers
265 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 ...
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5answers
47 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
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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 ...
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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
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1answer
59 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
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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
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1answer
58 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 ...
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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 ...
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6answers
81 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
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1answer
43 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
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5answers
229 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
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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
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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: ...
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2answers
49 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 ...
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2answers
69 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: ...
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0answers
25 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
59 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 | ...