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BASH QUESTIONS

Find duplicated nested directories
Find duplicated nested directories
wish helps you I have a large directory tree with this nested directories duplicates (but not all): , you can use uniq command as below;
TAG : bash
Date : November 26 2020, 11:01 PM , By : Trevor Philipps
Is it possible to several commands in the background but wait for all results and fail the script if an command fails
Is it possible to several commands in the background but wait for all results and fail the script if an command fails
This might help you Yes.You can use the wait command in bash to wait for completion on one or more sub-processes to terminate in which case we provide the PID to wait on it. Also wait can optionally take no arguments in which case it waits for all ba
TAG : bash
Date : November 26 2020, 11:01 PM , By : Kabelo
Cannot run script added to existing docker container
Cannot run script added to existing docker container
wish of those help While I was adding snippets to help explain the issue I found the problem and the solution.So I access the scripts inside the container from the host with another script that allows you to do different things based on switch case.
TAG : bash
Date : November 23 2020, 11:01 PM , By : Pedro R.
reading parameters into cURL from a text file in bash
reading parameters into cURL from a text file in bash
will help you I have a following cURL command to execute soapui test in Jenkins. There I am passing two parameters variable1 and variable2. , Used this on your test input
TAG : bash
Date : November 22 2020, 11:00 PM , By : Yuriy Black
extract part of a file path between pattern using awk
extract part of a file path between pattern using awk
I wish did fix the issue. I see that your path parts are fixed, so no need to use regexes. Field separation does the trick:
TAG : bash
Date : November 21 2020, 11:01 PM , By : Valentina Gomez
Loop through all columns in Bash
Loop through all columns in Bash
like below fixes the issue Using awk not only makes dealing with a variable number of columns easier, but will also be much faster:
TAG : bash
Date : November 19 2020, 11:01 PM , By : Zhenui
replace some string after certain other string with sed
replace some string after certain other string with sed
will be helpful for those in need In my config file I have an asset version like:
TAG : bash
Date : November 18 2020, 11:01 PM , By : Casey Setash
What does !!:2 mean in Mac or Linux?
What does !!:2 mean in Mac or Linux?
hope this fix your issue touch updates file timestamp (to current time, given no arguments)!! is 'History expansion' operation, retrieving previous command from bash history log in this form (two exclamation dots), alias for '!-1'
TAG : bash
Date : November 10 2020, 11:01 PM , By : Jitesh Magnani
Why does input redirection work differently when in command substitution?
Why does input redirection work differently when in command substitution?
will be helpful for those in need $(< file) is not a redirection; it is just a special case of a command substitution that uses the same syntax as an input redirection.In general, an input redirection must be associated with a command. There is one c
TAG : bash
Date : November 10 2020, 11:01 PM , By : Marcio Fonseca
Bash Script store cat output in variable and then echo it
Bash Script store cat output in variable and then echo it
hope this fix your issue Variable assignments in bash should not have any spaces before or after the equal sign. It should be like this:
TAG : bash
Date : November 09 2020, 11:01 PM , By : James
Restore previous value or unset environment variable
Restore previous value or unset environment variable
help you fix your problem I have something like that in a shell script , Just run your setenv+configure+make in a subshell using parentheses:
TAG : bash
Date : November 08 2020, 11:01 PM , By : Kishan Srivastava
string array is not assigned properly to each color
string array is not assigned properly to each color
I hope this helps you . Recently,i came up with a good idea to make a rainbow text but it keeps failing.I tried to make a nest loop so each color and string in their array can be assigned together to make a cool looking text. , You need to iterate ov
TAG : bash
Date : November 07 2020, 11:01 PM , By : Mennatullah
Can a bash script prepopulate the prompt with a command to run when it exits?
Can a bash script prepopulate the prompt with a command to run when it exits?
wish of those help for the help, I figured another way. I change the prompt like [tv10 ~]$just made a file changetv i put inside
TAG : bash
Date : November 06 2020, 11:01 PM , By : R. Jayles
Getting a string from a line that follows a certain character
Getting a string from a line that follows a certain character
Does that help From a file I'm retrieving the last line using the following cmd; , If the order in which the regions appear is fixed, you can simply do:
TAG : bash
Date : November 06 2020, 11:01 PM , By : jason.he
Nested bash command not working in teamcity ssh exec
Nested bash command not working in teamcity ssh exec
should help you out That is what unzip outputs when there are no arguments. My guess is that ls | grep zip is returning an empty string because ls didn't find anything.I think this is an artifact of how the local shell processes the string input to s
TAG : bash
Date : November 05 2020, 11:01 PM , By : dragonqa
Making wget a bash.sh
Making wget a bash.sh
Does that help Need help turning this wget string in to a bash script because I use it frequently. wget -nd -H -r -l 1 -A jpg,jpeg,bmp,gif,png,mp4,webm -e robots=off , The following should work
TAG : bash
Date : November 05 2020, 11:01 PM , By : CakeZilla ZZ
for loop in bash exiting to early without errors
for loop in bash exiting to early without errors
With these it helps If you don't declare your variables local, they're global -- so the loop in your s function is overwriting the same i counter used outside the function, leading to the outer loop's early exit.Consider using the below code:
TAG : bash
Date : November 04 2020, 11:01 PM , By : user6059710
Rename file and keep the extension in bash
Rename file and keep the extension in bash
this will help I have to rename some files that I don't exactly know where they are and keep their extensions. , Rather than embedding the {} in the script, pass it as an argument:
TAG : bash
Date : November 04 2020, 04:05 PM , By : José Roberto Júnior
Make GNU parallel return the server name in the sshlogin file
Make GNU parallel return the server name in the sshlogin file
may help you . It is unclear what you use the seq 3 for. If that is not needed then this will work:
TAG : bash
Date : November 01 2020, 01:04 PM , By : moonfacedassasinofjo
Bash check environment var is set fails doesn't work
Bash check environment var is set fails doesn't work
it fixes the issue just playing around on my server to get script the setup of the next server. Everything works - now I want to run it on the new server i got an error like this: , You explicetly tell the shell to use sh :
TAG : bash
Date : November 01 2020, 12:01 AM , By : Flanker
command concatenation in bash
command concatenation in bash
wish of those help Do not use chains of and || as a replacement for an if statement. and || have equal precedence, so a b || c runs c if either a or b fail; it is not equivalent to if a; then b; else c; fi.a b || c d is parsed as ((a b) ||c) d
TAG : bash
Date : November 01 2020, 12:01 AM , By : Arielle Mae Ilagan
Extracting information with AWK and PATTERN
Extracting information with AWK and PATTERN
With these it helps I have a file full of similar information to the section presented here: , you can use this;
TAG : bash
Date : November 01 2020, 12:01 AM , By : Elraphy
how to pass in a variable to awk commandline
how to pass in a variable to awk commandline
may help you . I'm having some trouble passing bash script variables into awk command-line. , The following test works for me:
TAG : bash
Date : November 01 2020, 12:01 AM , By : Abbas Al-musawee
Innobackupex call from bash script
Innobackupex call from bash script
hop of those help? you can change the following part in your script. LATEST_DUMP should be full path
TAG : bash
Date : October 31 2020, 05:38 PM , By : Brendan DeFrancisco
How to remove lines appear only once in a file using bash
How to remove lines appear only once in a file using bash
hope this fix your issue How can I remove lines appear only once in a file in bash? , If your duplicated lines are consecutives, you can use uniq
TAG : bash
Date : October 31 2020, 09:54 AM , By : Denis Sidorov
Bash Script Function
Bash Script Function
This might help you Writing a custom Shell Script for a college assignment. Have practically everything working apart from this.... I have an alias called ifc which will call a function called functionIfc. However, when this code is used, it tells me
TAG : bash
Date : October 31 2020, 05:55 AM , By : Jay
Search for numbers in files and replace the match with "result -1"
Search for numbers in files and replace the match with "result -1"
Hope that helps I want to subtract 1 from every number before the character '=' in a list of files. For example, rename a string in a file such as "sometext.10.moretext" to "sometext.9.moretext". , PowerShell
TAG : bash
Date : October 25 2020, 04:08 PM , By : Ariel H.
Rename file based on content
Rename file based on content
around this issue You can use sed to extract only digits from the first line (by deleting all non-digits):
TAG : bash
Date : October 24 2020, 03:08 PM , By : Mansoor Siddique
Insert part of filename to beginning of lines within file
Insert part of filename to beginning of lines within file
like below fixes the issue I have a directory that includes .fasta files, among others. Each fasta file has the following format: , Just extract the needed part from the filename, like:
TAG : bash
Date : October 24 2020, 01:08 AM , By : Nik
How to backup an application's database
How to backup an application's database
Hope that helps bash doesn't do string comparison directly; you need to use a specific command.
TAG : bash
Date : October 24 2020, 01:08 AM , By : Phibonaccii
alias for cp with arguments
alias for cp with arguments
To fix this issue You can't have aliases with arguments. Since you probably don't have $1 defined, pwd $1 just expands to pwd.Also, pwd doesn't actualy take any positional arguments. If you want the source to appear in readme, use echo.
TAG : bash
Date : October 23 2020, 03:08 PM , By : Marcelino Canto Lópe
For loop deletes files Instead of renaming
For loop deletes files Instead of renaming
fixed the issue. Will look into that further It doesn't delete all the files, it simple renames all of them to the same target name.You can see it by running:
TAG : bash
Date : October 22 2020, 03:08 PM , By : Djson86
Execute ssh shell script from npm command
Execute ssh shell script from npm command
I hope this helps you . I checked and it shelljs.exec is good for non TTY commands. For TTY based command you can use normal spawn method. Below is a sample code that works great for me
TAG : bash
Date : October 20 2020, 03:08 PM , By : adsdsa
Exclude certain string bash
Exclude certain string bash
hop of those help? , Maybe :
TAG : bash
Date : October 20 2020, 01:08 AM , By : romisfrag
Bash test value evaluation
Bash test value evaluation
around this issue Your issue is the $() enclosing your calls to isint. These replace the command with the standard output of the call to isint, so in this case what you're really running is:
TAG : bash
Date : October 19 2020, 01:08 AM , By : Alicia S
Running bash script with parameter
Running bash script with parameter
With these it helps I've got problem with my script. I have to run script with parameter. For example: , Actually I would change the format of your data to this:
TAG : bash
Date : October 18 2020, 03:08 PM , By : abhijeet joshi
Bash - Count number of occurences in textfile and display in descending order
Bash - Count number of occurences in textfile and display in descending order
this one helps. You can use tr with a composite string of the letters you wish to delete. Example:
TAG : bash
Date : October 17 2020, 03:08 PM , By : garyfairhead
Bash: find files within file size range and report their names to a file
Bash: find files within file size range and report their names to a file
it should still fix some issue If you just want to get a list of files within a specific size range, you can try:
TAG : bash
Date : October 17 2020, 03:08 PM , By : anna
I have many single files nested within many folders. Is there a way in Mac OSX to extract all the files into one folder?
I have many single files nested within many folders. Is there a way in Mac OSX to extract all the files into one folder?
around this issue I recently had a hard drive that got accidentally reformatted and had to resort to third party software to recover the files. The files have been recovered, but they are nested within multiple folders such as: , How about this?
TAG : bash
Date : October 16 2020, 01:08 AM , By : Nitesh Joshi
Create a note in privnote.com using HTTP requests
Create a note in privnote.com using HTTP requests
I wish this help you The content needs to be sent in application/x-www-form-urlencoded with the following parameters : data has_manual_pass duration_hours dont_ask data_type notify_email notify_ref
TAG : bash
Date : October 16 2020, 01:08 AM , By : Mritunjay
Recursively find hexadecimal bytes in binary files
Recursively find hexadecimal bytes in binary files
help you fix your problem I'm using grep within bash shell to find a series of hexadecimal bytes in files: , There is actually an option in grep that is available to use
TAG : bash
Date : October 15 2020, 03:08 PM , By : Will McDuff
How to kill a background job run by bash file
How to kill a background job run by bash file
wish of those help I've set a bash file for start PHP and Webpack server locally like this: , You should store your PID into file to use later. as below:
TAG : bash
Date : October 15 2020, 03:08 PM , By : C Cole
How to strip or replace all matches of a pattern from a string in Bash?
How to strip or replace all matches of a pattern from a string in Bash?
wish helps you I am trying to write the dirname function in Bash so that it doesn't use any external commands. , If extglob is on:
TAG : bash
Date : October 15 2020, 01:08 AM , By : Elli
How can I run executable in shell script?
How can I run executable in shell script?
Does that help I don't think that grade1 really is in your current working directory, as you claim. I suggest that you verify this also check the permissions of your executable. Extend your code to
TAG : bash
Date : October 15 2020, 01:08 AM , By : Gavin Gomel-Dunn
How do I pass BASH host command a variable and assign the answer to another variable
How do I pass BASH host command a variable and assign the answer to another variable
fixed the issue. Will look into that further As per what @codeforester commented, the problem was the $ sign left of the variable. The $ is not for assignment, but for expanding a variable. Furthermore in the link @codeforester provided there was a s
TAG : bash
Date : October 14 2020, 09:39 AM , By : J.krishna
Change permissions of file in CMake
Change permissions of file in CMake
With these it helps The problem with install is that existing files are not overwritten when the destination directory is equal to the source directory and when the files themselves did not change (CMake seems to compare timestamps). But nevermind, I
TAG : bash
Date : October 14 2020, 09:34 AM , By : sbevard
update stored variables in shell script
update stored variables in shell script
I hope this helps . to update a variable it must be re assing: $(..) is a command substitution it is expanded to output of specified command.
TAG : bash
Date : October 14 2020, 09:30 AM , By : xu zeyuan
Grep + sed combination
Grep + sed combination
this will help All those statements that assign pelar[1-5] are redirecting output, so nothing is likely being put in the variables, which are then executed as empty strings. Why?
TAG : bash
Date : October 14 2020, 09:27 AM , By : Gup
Find a line with certain string then remove it's newline character at the end in bash
Find a line with certain string then remove it's newline character at the end in bash
With these it helps I'm trying to prepare a file for a report. What I have is like this: , You can do this quite easily with sed, for example:
TAG : bash
Date : October 14 2020, 09:25 AM , By : Jack Boyd
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