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BASH QUESTIONS

Finding a newline in the csv file
Finding a newline in the csv file
wish helps you You can use perl to count the number of fields(commas), and append the next line until it reaches the correct number
TAG : bash
Date : November 29 2020, 03:01 PM , By : Dexter
How to avoid unzip "archives were successfully processed." output
How to avoid unzip "archives were successfully processed." output
around this issue When using the unzip command in bash, a lot of output in the terminal is created. Some output can be suppressed by using the -q option or the -qq ("= even quieter" - UNZIP MAN). However, always a the end of the process I still get a
TAG : bash
Date : November 27 2020, 03:01 PM , By : Giovanno
Using grep with pattern file to count individual pattern matches in a file
Using grep with pattern file to count individual pattern matches in a file
I wish this helpful for you You basically need grep -o which will print only the matched groups and then you can simply find their count using sort and uniq like this
TAG : bash
Date : November 26 2020, 03:01 PM , By : mohak behl
Why does od linenumber increment by 2?
Why does od linenumber increment by 2?
it fixes the issue The leftmost column is not a line number but rather the byte offset presented in octal form. Each line of default od output has 16 bytes in it. So, the offset goes 0, 16 (octal 20), 32 (octal 40), etc.
TAG : bash
Date : November 24 2020, 03:01 PM , By : Moomal
How to group commands together for control operators || and &&?
How to group commands together for control operators || and &&?
help you fix your problem I want to be able to group commands together so that if one out of a group of commands fail, another is executed, i.e.
TAG : bash
Date : November 23 2020, 03:01 PM , By : guestposter
Shell redirection: Command doesn't appear to output to stdout or stderr
Shell redirection: Command doesn't appear to output to stdout or stderr
hope this fix your issue @Gordon Davisson is right on the money. It appears the output was being sent directly to /dev/tty, which apparently is a thing people do... , Gordon!Update: Upon further tinkering and input from others, it looks like the impo
TAG : bash
Date : November 23 2020, 03:01 PM , By : Raj khanna
Using dollar sign in sed for both variable replacement and character
Using dollar sign in sed for both variable replacement and character
like below fixes the issue I try to use sed to change a line in a file named convergence.gnu I have a variable named lafila, which is a file name , Use single quotes:
TAG : bash
Date : November 23 2020, 03:01 PM , By : 张春洋
Bash replace // doesn't handle anchors like Regex? Because it is glob-like
Bash replace // doesn't handle anchors like Regex? Because it is glob-like
will be helpful for those in need From the bash manual (emphasis added):
TAG : bash
Date : November 19 2020, 03:01 PM , By : TE_ARNITA
Escape apostrophe in docker command
Escape apostrophe in docker command
will help you A bash single quoted string cannot contain a single quote. You can't escape it. (ref https://www.gnu.org/software/bash/manual/bashref.htmlSingle-Quotes)Try this:
TAG : bash
Date : November 19 2020, 03:01 PM , By : Aidan Helmbold
How to skip a field in column using awk
How to skip a field in column using awk
will be helpful for those in need I have this data here: , awk to the rescue!
TAG : bash
Date : November 19 2020, 03:01 PM , By : Steven Vanden Brouck
Check directory exists in hdfs using shell conditionals
Check directory exists in hdfs using shell conditionals
wish helps you Couple of violations (syntactic/semantic) for your initial edit. The string in the case clause case '$table_name' in will never expand, because present under the single-quotes. It will not throw an error because you are trying to match
TAG : bash
Date : November 18 2020, 03:01 PM , By : n.t
bash how to quote string with quotes
bash how to quote string with quotes
I hope this helps you . I want to synchronize some environment variables between scripts. So, for example, in one script I might have: , Use printf '%q':
TAG : bash
Date : November 18 2020, 03:01 PM , By : cuayos
Ansible to install Sublime Text editor in Linux
Ansible to install Sublime Text editor in Linux
wish help you to fix your issue I am trying to install Sublime Text (on Ubuntu) using Ansible. Here is the basic Ansible playbook I am trying to use for accomplishing this, based on:
TAG : bash
Date : November 18 2020, 03:01 PM , By : John Alex
Ubuntu - Terminal closes when I type command?
Ubuntu - Terminal closes when I type command?
I hope this helps . Your command exec bundle... should be bundle exec.... Running the exec command replaces your shell process with the proceeding command.
TAG : bash
Date : November 17 2020, 03:01 PM , By : Aaron Roh
Set environment variables in Docker
Set environment variables in Docker
this will help RUN entries cannot modify environment variables (I assume you want to set more variables in image_env_setup.sh). Only ENV entries in the Dockerfile (and docker options like --rcfile can change the environment).You can also decide to so
TAG : bash
Date : November 17 2020, 03:01 PM , By : VaiTri
Rsync only two dictionaries
Rsync only two dictionaries
I hope this helps . Here's excerpt from the rsync man page, which tackles your exact problem.
TAG : bash
Date : November 17 2020, 03:01 PM , By : Ali Shokri
Bash command output as numeric variable
Bash command output as numeric variable
With these it helps Brace expansion is done before parameter expansion and that's why we can't have a variable inside {...} construct. Use a regular for loop so that you don't depend on an external command like seq:
TAG : bash
Date : November 16 2020, 03:01 PM , By : Yosra Maaref
XMLStarlet remove last -n (newline) using Sed
XMLStarlet remove last -n (newline) using Sed
Any of those help This is a rather more simpler task which has been troubling me for some time. I have the following: , Placing this at the end of the script worked for me:
TAG : bash
Date : November 16 2020, 03:01 PM , By : Nidhi Pawar
Bash - Fill with 0 every number to make it 4 digits using sed
Bash - Fill with 0 every number to make it 4 digits using sed
may help you . I have tried different ways of doing this. I need to transform this: , You could use perl
TAG : bash
Date : November 14 2020, 03:01 PM , By : re_xb
Create an alias of the script by calling the script with an argument: ./myscript alias
Create an alias of the script by calling the script with an argument: ./myscript alias
fixed the issue. Will look into that further This won't and can't work because ./devbox is a child process of your shell, and child processes can't set aliases in parent shells. (Similarly, they can't change environment variables either.)I can sugges
TAG : bash
Date : November 14 2020, 03:01 PM , By : Dekel
Propagate `set -x` in [ba]sh
Propagate `set -x` in [ba]sh
wish helps you set -x uses the current value of PS4 as the marker for each line of output.
TAG : bash
Date : November 13 2020, 03:01 PM , By : smithsonian
sh script to replace all file names and folder names on mac
sh script to replace all file names and folder names on mac
it should still fix some issue Use find to recurse through subdirectories. It's a little hairy because you need to explicitly invoke a subshell to get the replacements to work.
TAG : bash
Date : November 12 2020, 03:00 PM , By : user7452842
Bash script trying to compare a historical and current file and get a sum difference when lines dont match
Bash script trying to compare a historical and current file and get a sum difference when lines dont match
should help you out awk to the rescue!since you didn't post your input files, I'll work on a sample and show a solution for what I think your problem is.
TAG : bash
Date : November 12 2020, 03:00 PM , By : CreativeCat
Install libxcb on Windows bash subsystem
Install libxcb on Windows bash subsystem
should help you out In Trusty you can apt-get xcb, or if you want the developer stuff libx11-xcb-dev . See here: https://packages.ubuntu.com/trusty/libx11-xcb-dev
TAG : bash
Date : November 11 2020, 03:01 PM , By : dbirds2
Make Atom CLI wait for file to be closed
Make Atom CLI wait for file to be closed
like below fixes the issue I realize that many Linux users find a lot of value in being able to quickly toggle editors open and closed for individual files, but Atom was not designed with that pattern in mind and the time it takes to load all of its
TAG : bash
Date : November 11 2020, 03:01 PM , By : Soni
In bash, cp does copy dot files while using wildcard? Which option should I use
In bash, cp does copy dot files while using wildcard? Which option should I use
will help you You can use the wildcard like cp -r .[^.]* Thats because your bash is built to ignore the hidden files and cp command just don't get the hidden arguments. Thats how its supposed to work .. :)
TAG : bash
Date : November 11 2020, 03:01 PM , By : kbagg
how to substitute and print column in perl just like in awk
how to substitute and print column in perl just like in awk
it fixes the issue I have this bash/awk code to deal with hosts , How about:
TAG : bash
Date : November 10 2020, 03:01 PM , By : Mahesh Baliger Kadap
find -exec when used with sed for file rename not working
find -exec when used with sed for file rename not working
Any of those help You can just use parameter expansion for your use-case when using find with the -exec option,
TAG : bash
Date : November 09 2020, 03:01 PM , By : lihuafengzi
How to check if a file's size is greater than a certain value in Bash
How to check if a file's size is greater than a certain value in Bash
wish help you to fix your issue Couple of syntactic issues. The variable definitions in bash do not take spaces it should have been MAXSIZE=500000, without spaces The way comparison operation is done is incorrect. Instead of if [ (( $FILESIZE > MAXSI
TAG : bash
Date : November 09 2020, 03:01 PM , By : Ryan Jennings
How can I auto increment file name version in a bash shell environment?
How can I auto increment file name version in a bash shell environment?
hop of those help? You can pipe the output of your git command into another process which can manipulate the text (I'll prefer awk here).
TAG : bash
Date : November 07 2020, 03:01 PM , By : Marc Leconte
shuf command isn't random inside of find -exec?
shuf command isn't random inside of find -exec?
wish help you to fix your issue , The shell is expanding
TAG : bash
Date : November 07 2020, 03:01 PM , By : Tural S. Qurbanov
A way to push terminal prompt to top of screen without deleting history
A way to push terminal prompt to top of screen without deleting history
it should still fix some issue "clear" will do that.It will remove everything from the window, but leave the history of the session untouched.
TAG : bash
Date : November 05 2020, 03:01 PM , By : D3nX
Bash - Break out of loop with Ctrl-C but continue with script
Bash - Break out of loop with Ctrl-C but continue with script
Hope that helps Trap Statement Here is one method for making sure the echo statements are run after a Ctrl+C:
TAG : bash
Date : November 04 2020, 03:01 PM , By : user7450786
Passing Scripts as Arguments Bash
Passing Scripts as Arguments Bash
help you fix your problem There are a variety of errors you could catch by running your script through shellcheck.net. Corrections:
TAG : bash
Date : November 04 2020, 03:01 PM , By : Khondoker Rabbi
How to automate curl POST for CSV file?
How to automate curl POST for CSV file?
it fixes the issue I need to write a bash script that takes CSV file and iterates row by row, sending each row to http://localhost:9999/myListener. , you could translate csv to json line by line with awk:
TAG : bash
Date : November 04 2020, 03:01 PM , By : Marina
Bash substitution inside substitution
Bash substitution inside substitution
it should still fix some issue I am learning bash, and wanted to do something very simple, here's my script: , You could do this:
TAG : bash
Date : November 03 2020, 03:01 PM , By : singham 3 FULL MOVIE
Print awk output on the same line
Print awk output on the same line
should help you out How do I print awk output on the same line. , I have found this solution that is similar to what anubhava posted.
TAG : bash
Date : November 01 2020, 03:01 PM , By : chirag tank
Bash: how to get the complete substring of a match in a string?
Bash: how to get the complete substring of a match in a string?
With these it helps I have a TXT file, which is shipped from a Windows machine and is encoded in ISO-8859-1. My Qt application is supposed to read this file but QString supports only UTF-8 (I want to avoid working with QByteArray). I've been sturggli
TAG : bash
Date : October 31 2020, 04:00 PM , By : user7449763
SCP username with colon
SCP username with colon
I hope this helps you . This is simply a feature of the Cisso ssh server implementation; it parses the user name, and if it contains a :[0-9]+ component then it understands it has to connect the session to the console port with the corresponding numb
TAG : bash
Date : October 30 2020, 04:01 PM , By : nikhitha shivu
SSH command chain does not work when put in single line
SSH command chain does not work when put in single line
This might help you Try using single quotes instead of double-quotes on your SSH command.Bash's order of expansions is going to try to expand those variables inside the double quotes based on the variable assignments on the computer you're running it
TAG : bash
Date : October 29 2020, 04:01 PM , By : ryan ucan
Bash: split long string argument to multiple lines?
Bash: split long string argument to multiple lines?
wish of those help Given a command that takes a single long string argument like: , You can assign your string to a variable like this:
TAG : bash
Date : October 28 2020, 04:01 PM , By : Jose Enrique Bauza
Unix Bash Script - command not found
Unix Bash Script - command not found
this one helps. So I'm working on a simple directory size function that is suppose to take an input of the directory and tell you its size, and whether it is greater or less than 1 kb. I have previously received help however, after modifying my code
TAG : bash
Date : October 25 2020, 09:10 AM , By : Rasmus Hinnenthal
Splitting a large, complex one column file into several columns with awk
Splitting a large, complex one column file into several columns with awk
Does that help I have a text file produced by some commercial software, looking like below. It consists in brackets delimited sections, each of which counts several million elements but the exact value changes from one case to another. , With GNU awk
TAG : bash
Date : October 24 2020, 08:10 PM , By : user2172171
How to compare two dates of different format?
How to compare two dates of different format?
I hope this helps you . If you're getting dates in above format, then you need to convert 2nd data string to make it parseable by Unix date command first. Here is an example:
TAG : bash
Date : October 24 2020, 08:10 AM , By : user2172371
Split string with | character in Bash and export environment variables from first row
Split string with | character in Bash and export environment variables from first row
it fixes the issue I have the following string which I get from a web service: , Take 3: awk as requested
TAG : bash
Date : October 24 2020, 08:10 AM , By : user2172239
AWK if else condition not printing correctly
AWK if else condition not printing correctly
this will help Do heed the commenters advice on forming a better question.In this case, the issue is quoting, you have print $0"\t"hom; which says print the whole line, a tab, then the contents of the variable hom, which doesn't exist.
TAG : bash
Date : October 20 2020, 08:10 PM , By : user2173491
Parallel processes in bash, kill with Ctrl C
Parallel processes in bash, kill with Ctrl C
I wish did fix the issue. A simple approach -- albeit not completely reliable, should a process die and have something else be assigned its PID number -- is simply to maintain an array of PIDs:
TAG : bash
Date : October 20 2020, 08:10 AM , By : Christopher Johansso
how to move files inside folders in one folder
how to move files inside folders in one folder
Hope that helps If I understand your problem and you have list.txt that contains a list of directories (one on each line) and for which you are interested in moving the single (or more) text file(s) of the format somename.txt from the named directory
TAG : bash
Date : October 19 2020, 08:10 PM , By : user2173798
Storing multiple arguments in a string with quotes in shell
Storing multiple arguments in a string with quotes in shell
I wish this helpful for you In bash, everything inside single quotes is preserved verbatim. Variables will not be interpolated.Try the following:
TAG : bash
Date : October 18 2020, 08:10 AM , By : Shehzer Ahmed
Bash complete with "@"-sign
Bash complete with "@"-sign
I wish did fix the issue. The easy way to make it work is to remove '@' from $COMP_WORDBREAKS or Bash would handle @ by itself. You can try like this:
TAG : bash
Date : October 18 2020, 08:10 AM , By : Avinash
Problem with comparing numerical values while column-wise parsing CSV file
Problem with comparing numerical values while column-wise parsing CSV file
I hope this helps you . I have a CSV file with the following columns: , Use awk.
TAG : bash
Date : October 17 2020, 08:10 AM , By : Daniele Zucca
How to reuse a variable in shell script when used in curl?
How to reuse a variable in shell script when used in curl?
wish helps you When you are using a shell that supports arrays, you can avoid the need for a temporary configuration file.
TAG : bash
Date : October 17 2020, 08:10 AM , By : Bill Sullivan
Add to $PATH with Shell Script
Add to $PATH with Shell Script
around this issue I want to add PATH on Linux Ubuntu 18.04 from file path.sh , my file include : , Let's consult man bash:
TAG : bash
Date : October 15 2020, 08:10 PM , By : user2175409
Check if network drive is mounted, if not send e-mail and try to mount
Check if network drive is mounted, if not send e-mail and try to mount
This might help you From How to send email from Terminal? article you'll find, how to send e-mails from shell.After it just add simple check like:
TAG : bash
Date : October 15 2020, 08:10 PM , By : Rombout Versluijs
Getting an exit status stored to a variable inside an ssh command
Getting an exit status stored to a variable inside an ssh command
wish of those help You will need to scape the variables you want to use in the remote server. $PASSWORD and $PASSWORDCONFIRM are fine, those are used in the local server.
TAG : bash
Date : October 15 2020, 08:10 PM , By : Ben Tetreault
Shortcut for opening tmux terminal
Shortcut for opening tmux terminal
hope this fix your issue A way to achieve this is to set up a new shortcut. In Ubuntu 16.04, I can: open the Keyboard utility, go to Shortcuts > Custom Shortcuts, create a new shortcut named TmuxTerminal, which launch the command gnome-terminal -e "t
TAG : bash
Date : October 14 2020, 02:24 PM , By : user2175795
Can not overwrite folder from source to destination
Can not overwrite folder from source to destination
To fix this issue just remove spaces in variable assignment. also, for copying with subdirectories use "cp -r" to copy directories recursivelyexecute "cp --help" for other options
TAG : bash
Date : October 14 2020, 02:24 PM , By : mark
Trickle FTP connection
Trickle FTP connection
it helps some times In your first attempt, you only trickle the standard output from ftp (depending on the implementation, probably just the progress messages, if even that). In your second attempt, you have a syntax error; the argument to ftp should
TAG : bash
Date : October 14 2020, 02:24 PM , By : Victor Manuel Merino
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