Questions tagged [bash]
Bash (Bourne-Again SHell), is the shell used in Ubuntu's command-line interface by default.
0
votes
1answer
37 views
How to pass strings stored in variables to find command
I need to pass strings stored in a variable to a find command string.
What I do:
s="\( ! -path \"/path/to/1/Recycle Bin\" \) -or"
s="${s} \( ! -path \"/path/to/2/Recycle Bin\" \)"
exec=$(find "/path/...
3
votes
2answers
169 views
whereis returns different path to which
I utilize command whereis
$ whereis rm
/bin/rm
when it come to which
$ which rm
/usr/local/opt/coreutils/libexec/gnubin/rm
They are different,
which path I actually applied when issue command ...
0
votes
1answer
31 views
Run a script on boot
I have a script to start a java application automatically.
# colors
red='\e[0;31m'
green='\e[0;32m'
yellow='\e[0;33m'
reset='\e[0m'
echoRed() { echo -e "${red}$1${reset}"; }
echoGreen() { echo -e "$...
0
votes
2answers
47 views
Output the current PATH to text file using BASH script [on hold]
I am trying to output the PATH used by the computer to a simple text file.
Something like echo PATH >PATH.TXT or >>PATH.TXT
With the double >>, it works but gives each on a different line and if I ...
1
vote
2answers
39 views
How can I move content of a txt file to another using Bash Script?
I want to copy the whole content of the file into another multiple files as group wise. Suppose If I select 10 .txt files then the contents of those files should be copy and paste in a another one new ...
0
votes
0answers
16 views
How to install custom service in ubuntu 18 and windows both via bash file for both OS [on hold]
i have to deploy a custom service on cloud which they need to install and start
i have to create script for start them and stop them as well and install them too
0
votes
0answers
19 views
How to put special characters with lynx script?
I'm writing a script to send any code to a page by making the lynx to type it completely but I don't know how to make it print some special characters:
'*' , key * doesn't work
'\t', key <tab> ...
1
vote
1answer
48 views
What kind of code do keyboard “custom shortcuts” accept
The first thing I've been taught to do when I use Debian or Ubuntu is to create a shortcut (in my case Ctr-Alt-T) to open a terminal. To do this I create a new keyboard shortcut (in the X system's ...
0
votes
0answers
13 views
How to Change Base Folder Date
I have a backup drive and keep seven rolling backups for the past seven days using Days of the week within a Bash script.
day-1/home/username/.config
day-2/home/username/.config
When I look at that ...
0
votes
0answers
19 views
Launching vscode from bash gives the following error
Output of code --verbose:
[main 3:45:14 PM] Error: listen EACCES /run/user/0/vscode-4369ae7e-1.29.1-main.sock
at Object._errnoException (util.js:1024:11)
at _exceptionWithHostPort ...
3
votes
2answers
116 views
how to compare list of functions from 2 files?
I wanted to list all functions in 2 files I have, so I used:
cat <file_A> | grep -E "^function"
cat <file_B> | grep -E "^function"
How can I compare the outputs and highlight the ...
3
votes
1answer
68 views
How to close a named pipe (thereby enabling it for cat)?
I need help closing a named pipe. I created a named fifo via mkfifo myfifo, then some C++ executable files wrote/read from myfifo, and now I wish to close it (so I can cat its contents to read them).
...
0
votes
1answer
73 views
Executable program will not run
I was trying to run Monero-cli one my Ubuntu laptop and it wont let me run the executable file after the start.sh file. It said Permission denied on both the executable and start.sh and I could not ...
0
votes
0answers
28 views
Running a SHC encrypted file on other system
long time ago (2-3 years ago) I had a dedicated that had a SHC encrypted shell script (script.sh.x file) And I do have that file til now but not that dedicated, it died long time ago, now I used SHC ...
1
vote
1answer
51 views
Assigned variable for pipeline is not working
I have a shell script to check port status. After checking the port if it is busy then will kill it.
#check port and kill
checkPort(){
check=$(sudo netstat -nlpt | grep 2020 | awk '{print $6}')
...
0
votes
0answers
25 views
What Files to Exclude for a Backup
It took me forever to get my current apps and themes configured just the way I want them. I'm looking for a way to include all these configurations, the apps themselves, and any of my personal files ...
0
votes
0answers
32 views
sftp not to rewrite existing file
i have created a bash file to run sftp transfer between two server. All working fine now but i just want to ask how do i transfer a not existing file only? Right now when the server run the bash file, ...
0
votes
1answer
24 views
Changing text on a file using scripts [duplicate]
I want to change the PASS_MIN_DAYS = (whatever value is set) to PASS_MIN_DAYS = 15 using a script.The file it's in is /etc/login.defs.
3
votes
4answers
54 views
How to show 'similar' commands when you forget the exact command [duplicate]
If I get this:
No command 'pdf' found, but there are 16 similar ones
pdf: command not found
How do I see the 16 similar commands?
-1
votes
0answers
15 views
Script to delete users not on a text file [duplicate]
I have a list of users I want to keep on my computer, but I want to delete all the other users with a script. Can anyone help? I'm new to scripting. Make it so only users greater than 10000 get ...
0
votes
0answers
31 views
-bash: /usr/lib/command-not-found: /usr/bin/python3: bad interpreter: Permission denied
I have an Ubuntu(16.4) server which is accessible via putty(No GUI configured)
Yesterday I changed the /usr/bin permissions from the default 755 to 750 and now I am unable to change it back.
Command ...
0
votes
1answer
19 views
use $x variable in with cut command parameter
i have this bash line
current_part= `echo "${lines[$i]}" | cut -d , -f$x`
is it possible to use variable $x with cut's parameter -f ?
i want -f1, -f2, -f3 and so on with each iteration of $x
-1
votes
0answers
23 views
I cant get cron to work [duplicate]
sudo crontab -e >> { *1 * * * * date +'%d/%m/%Y %H:%M' >> ultimoscript.txt }
My goal is to make a script scriptexample that crontab program me. I want you to write in ultimoscript.txt the ...
1
vote
1answer
66 views
How to write a shell script to check port and kill it?
I have a command to check the port and kill specific pid running on that port. But I want to modify it to,
Check port is busy or available
If the port is busy then kill the pid
How can I do this?
...
-1
votes
0answers
28 views
How to check if screen is locked from bash? [closed]
How to check whether the computer screen is locked or active?. I would like to do that from shell script.
0
votes
2answers
50 views
How to separate output of variables [closed]
I want to write a script to separate outputs. Output should be like this:
192.168.94.139
middle of loop
192.168.94.140
middle of loop
After separating to the new line I want to run some ...
0
votes
0answers
15 views
Bash script to automaticly change a given user's password [duplicate]
So, I know that the passwd command allows me to change my own password, and if run with sudo, allows me to change anyone's password, but what if I want a script to do it?
I have a script that grabs a ...
-3
votes
2answers
51 views
Using the result of a command as an argument in bash? And a little more [closed]
I am really a beginner in the field of language, please excuse me in advance.
I would like to return the value of a command in a parameter, ie return the value of ls -l in $1.
I also can't do the ls ...
-2
votes
1answer
60 views
syntax error near unexpected token `newline' in .bashrc
I'm trying to add script
function proxyset() {
proxy_enabled=true
NO_PROXY_DOMAINS=".abc.com,"
LOCAL_ADDRESSES="localhost"
USER=<USER_ID>
PASSWORD=<...
0
votes
0answers
51 views
First bash script: computer to dropbox backup help
I have the following script in /.backup with a symlink to cron.weekly. The goal is to have my entire system encrypted, compressed, and saved to dropbox every week. This is my first bash script and I'm ...
0
votes
1answer
37 views
runaway regular expression error in awk
I have a script which converts expressions in different units to standard units like:
distance=1km -> distance=1000m.
This is my code:
#!/bin/bash
cat "$1" | grep '=' | awk -F= '{switch ($2) {
...
0
votes
0answers
74 views
wi-fi adapter not found
I am having hp-EliteBook 8470p
I am getting an error like "no wifi device
recently I was run a command chmod 7777 on root by mistake
and now I am getting this
https://i.stack.imgur.com/f03OZ.png
0
votes
0answers
19 views
Can we run shell scripts which are located in gitlab from Jenkins
I have a Jenkins parameter job to deploy artifacts to the remote server. I wrote a shell script to check whether there is a directoy called backup in /var/www/test.com path if not create a directory. ...
1
vote
2answers
46 views
Create a file to automatically check user list for users specified
I am realitively new to bash scripting, but have created this from my intense googling
I am attempting to create a bash script to run on Ubuntu that will check the user list and find any users that ...
1
vote
2answers
40 views
Sort the file by its numerate number
I have the following files
$ ls *.md | sort -n
1.pythonPrimer.md
10.mapsHashTablesAndSkipLists.md
11.searchTree.md
12.sortAndSelection.md
13.textProcessing.md
14.graphAlgorithms.md
15....
0
votes
0answers
38 views
Startup command with variable settings
I have Xubuntu 16.04 for 2 days.
I am trying to set an entry in Session and Startup>Application Autostart that will set several bash variables and execute a command.
I have managed how to do it ...
0
votes
0answers
47 views
Extract specific field in matrix
I am trying to extract some fields from a .txt file to generate another table. It is a matrix (size varies time to time) separated with ; (further by \ in header), each field can have >= 1 numerical ...
2
votes
1answer
36 views
how to create a regex string where you don't know what to escape
I have a passwd file with the line containing root being:
root:6UZSjeWUui3JQ:0:0:root:/root:/bin/sh
I want this line to be changed to:
root:$1$dog$cNv/OuAd7CMNdrhWsHXAR.:0:0:root:/root:/bin/sh
...
1
vote
1answer
61 views
trying to write bash script that sends email with output from two variables ubuntu 18.04
The problem I am having is that the action I am looking for is for sendemail to send myself an email that contains both w output from the ssh user and output from doing an lsof -u on $SSH_USER to see ...
8
votes
4answers
1k views
How can SSH work with an if condition?
I have an if statement to calculate files and delete all except the latest three files. But I want to run this command remotely. How can I combine ssh with an if condition?
I tried this but no ...
1
vote
1answer
35 views
argument not recognized for-loop
I'm new pretty new when it comes to creating scripts in linux (I also don't really know on which terms to use like bash/shell), but I have the following command in a script which I want to execute ...
3
votes
3answers
291 views
Edit text file to add space
I have a text file which looks like this
../pool/main/a/aalib/libaa1_1.4p5-44build2_amd64.deb
../pool/main/a/accountsservice/accountsservice_0.6.45-1ubuntu1_amd64.deb
../pool/main/a/accountsservice/...
3
votes
2answers
168 views
Use read line to iterate over variables
I have the following files:
$ ls *.png | egrep -i "am|pm"
output-0 11.42.30 AM.png
output-0 5.10.12 PM.png
....
I want to remove them but get this error:
$ ls *.png | egrep -i "am|pm" | while read ...
1
vote
1answer
31 views
convert pdf to png and starts with numeral 1
I tried to convert an pdf to multiple pngs
$ convert -density 150 1.primer.pdf -quality 100 output.png
it work well but the output starts with 0
$ ls | grep png | sort -n
output-0.png
output-1....
2
votes
1answer
100 views
read input from a file and append that values to variables using shell
I'm trying to write a bash script to read a file as input and append the
values/data in that file into variables and the values of the variables should be updated each iteration based on the input ...
2
votes
0answers
37 views
upgraded to Ubuntu 18.04 LTS and now there is error found when loading /home/[user]/.profile
My laptop used to have Ubuntu 16.04 LTS. I upgraded it to Ubuntu 18.04 LTS. After upgrading, every time I boot it, it shows this error message:
Error found when loading /home/[user]/.profile:
...
0
votes
1answer
31 views
the attributes of files demonstrated by ls -l [duplicate]
I tried
greedy@algorithms:~$ ls -l /
total 2097292
drwxr-xr-x 2 root root 4096 11月 28 15:55 bin
drwxr-xr-x 3 root root 4096 11月 28 16:34 boot
drwxrwxr-x 2 root root 4096 5月 ...
1
vote
1answer
47 views
Command not found after setting source in bash script [duplicate]
Following the instructions here, and everything works fine manually. However, when I use the instructions in a bash script, I get rbenv command not found because the source ~/.bashrc didn't execute ...
2
votes
1answer
41 views
Save all command and all output (using script across terminals)
For a short period of time, I want to save the command history and output of every command I run in any terminal I open. It should all go in the same file.
So basically I want to run a command (or ...
2
votes
2answers
110 views
Script for merging files in multiple nested directories by symbolic link
Basically I am looking for a script to automate stuff (See picture below) in Ubuntu. I'm thinking of using a bash script but other solutions (eg. python?) would also be excellent.
1) Suppose I have a ...
