Bash scripting is making scripts in the Bash shell language.

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Properly escaping forward slash in bash script for usage with sed

I'm trying to determine the size of the files that would be newly copied when syncing two folders by running rsync in dry mode and then summing up the sizes of the files listed in the output of rsync. ...
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1answer
134 views

Unable to delete a file using bash script

I'm having problems removing a file in a bash script. I saw the other post with the same problem but none of those solutions solved my problem. The bash script is an OP5 surveillance check and it ...
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1answer
424 views

Simple script run via cronjob doesn't work but works from shell

I am on shared hosting and I'm trying to schedule cronjob to run every now and then. Via cPanel I scheduled to execute my script but even though that according to my host support the cronjob runs, the ...
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3answers
409 views

bash: Use columns separate in an array

Is it possible to put columns separate in arrays, not as a line but as a column. I need to access the lines sequentially. I have one file, but in this example, the files are divided into columns and ...
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1answer
33 views

Are shebang invocations detectable?

Is there a way for a bash script to detect if it's being run via the #!/usr/bin/env shebang? Some magic bash foo that would let me write: #!/bin/bash ... if [ __INVOKED_VIA_USR_BIN_ENV__ ]; then ...
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397 views

Execute the shell command in subshell or in background?

Actually I mainly work with Ruby, but now I have created a bash script file. From this script file I am displaying the messages on the screen. Here is my scenario. I have used aosd_cat module for ...
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2answers
67 views

Script variables not printing as expected

In an attempt to debug a script, I'm printing variables containing text, pretty standard stuff, except that the variables are not behaving as expected. I've discovered that one of the lines of a file ...
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2answers
41 views

How do I print multiple sections in a text file?

I have a text file looking something like this: *FILESTART line_a line_b line_c *INCLUDE file_A.key file_B.key *INCLUDE file_1.key file_2.key file_3.key *SOMETHING_ELSE line_x line_y line_z *END I ...
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1answer
41 views

I am not sure what type of quotes to use in a bash script

I am working on a script. I am having it call a program that has an input directory. The program looks like this if executing it from command line /path/to/program -c /path/to/config -d ...
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1answer
44 views

Text file sort. Ignore rubbish and create .csv from remnants

I've got a load of files containing preamble rubbish followed by formatted information. They're all the same format. I want to ignore the preamble, (everything up to and including the word ...
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2answers
216 views

How do i run su username -c “command ” in a sequence

am trying to write a script that runs commands in a sequence as a user but su keeps doing every command at the same time instead of running them one after another the script looks like su username ...
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62 views

Autoexport bash internal variables

I need to access to some bash internal variables (BASH_LINENO, BASH_SOURCE) from a command invoked by a shell script. The only possible interface between my command and the script are environment ...
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1answer
603 views

HandbrakeCLI bash batch script not working.

I am trying to batch encode a bunch of files. Looking over the internet I have found just a couple scripts and none of them worked for me. I started to piece together something and it is close to ...
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1answer
49 views

Can you delete all users but specified accounts in Ubuntu?

I am trying to find a way to quickly delete all user accounts except for the ones I specify in Ubuntu. Is there a good way of doing this? Perhaps a bash script that could do this function? I ...
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1answer
97 views

Move Files having No Extension

I have 5 files in a directory log.txt abc.pdf def.ppt 1CC 1DD Now I want to Move files having no extension i.e 1CC and 1DD to a another directory i.e tree. whenever i am manually using command it ...
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1answer
79 views

Find last 24 hours executed commands per each user in bash

How can I find last 24 hours executed commands per each user and mail them the result? I have Ubuntu GNU/Linux. I find out that I need a package named 'acct'. I have already installed and enabled that ...
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29 views

Combining a bunch of find commands into one command or script.

I was wondering how to combine a bunch of find commands into one. This is the list of find commands I want to run and in the order. find /path/to/folder/ -name '*Sample*' -exec rm -rf {} \; find ...
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1answer
73 views

How to recursively create a directory if it does NOT yet exist?

This seems like a general utility and am wondering if anything already exists. I'm trying to place a timestamped logfile in a directory after a script runs, but need to make sure the subdirectory ...
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1answer
34 views

grep and search and replace in linux accepting parameters with /

I'm trying to find and replace the contents of a file using grep and sed. grep "#!/bin/bash" ./ | sed xargs -i 's/#!/bin/bash/#!/usr/bin/env bash' How do I make sure that the string #!/bin/bash will ...
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1answer
244 views

Bind bash script to keypress

How do I map a keypress on a keyboard to a bash script? For example, when I press the "Esc" key, the script is run. OS: XFCE Spin Fedora 19 ---- EDIT ---- I need to set this via the console. This ...
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1answer
288 views

How to run a bash script in a daily basis on my remote server?

I have code need to be run in daily basis at my ubuntu remote server. How can I set it to go as described? Is there any console too to help me ? And this code should be activated itself as the machine ...
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1answer
44 views

Trim File Names of Tarballs Using Bash

I need to grade some source code from various students. The submission process is through Blackboard which appends to the file name a bunch of unnecessary stuff. Here is an example: Test ...
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1answer
105 views

Linux Bash “|” operator doesn't work - what am I doing wrong?

I am trying to check user password via login command like this: # echo "name\npassword" | login but the command ends without writing anything. echo ends because of SIGPIPE. Why did login stop ...
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1answer
70 views

find files older than create its parent folder in a directory and move them there

I've been trying to create a bash script that does the following. Use the find command to search for files older than 7 days (find . -type f -mtime +7 ! -iname '.*', take the parent directory(of the ...
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1answer
24 views

How do I extract multiple files at once?

I have a number of rar files stored like so: /torrents/televisionshowS01E0$X/nameoftelevisionshow.rar where $X is a variable ={0,1,2,...,12} I would like to extract them using a single command to ...
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740 views

Postgresql query within a bash script

We are having an issue with a postgresql bash query. The output of the query from the bash script add's additional quotes around the date. Please can you help me fix it?! Script: #!/bin/sh ...
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1answer
23 views

How do I suppress the terminal window when I launch a bash script from Spotlight?

When I run a bash script from Spotlight, a terminal window launches to execute it. The window closes when the script finishes but I'd like to prevent that window from appearing on my desktop at all. ...
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1answer
60 views

Bash provide options and pass variable on choice

Trying to give an option to users of an installer to chose either "Development" or "Stable". By default the installer does "git checkout 1.1.0", but I'm turning 1.1.0 into $GIT_VERSION and trying to ...
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1answer
97 views

bin/bash script: toggle bluetooth state?

I'm trying to do an alfred workflow that toggles my bluetooth connection. STATUS=$(/usr/local/bin/blueutil status) if [ $STATUS == "on" ] then /usr/local/bin/blueutil off echo "off" else ...
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4answers
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How do I get Linux commands and scripts to work on Cygwin?

I'm back with a follow up question. How do I get Linux commands to work on Cygwin? First I asked you what tool should I use to help me run my Linux scripts on Windows and you suggested Cygwin and I ...
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1answer
458 views

How do I run multiple scripts within a script, even if one script fails

I have a simple bash script that executes a number of other scripts … #/bin/bash … ./update_artifact1.sh $ARTIFACT_VERSION ./update_artifact2.sh $ARTIFACT_VERSION ./update_artifact3.sh ...
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2answers
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How can sed find pattern in one field but append another(same row)

I have a text file that has comma separated values. Field1 has field that needs to be matched, but field two needs substitution based on the match. Example: A,C B,C Result: A,D B,C I'm guessing ...
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how can sed get patterns from a file

I have two files one holds a list of patterns, another need to be changed based on these patterns. So far I have been experimenting with cat patterns.txt| xargs -n1| sed ...
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2answers
189 views

Execute a command for 3 lines at a time

I'm trying to run three separate processed while reading foo.txt Here is the example: cat foo.txt | while read line do echo line1 echo line2 echo line3 echo "" done The expected output is: line1 ...
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1answer
860 views

why doesn't a bash while loop exit when piping to terminated subcommand?

Why doesn't the command below exit? Rather than exit, the loop runs indefinitely. While I discovered this behavior using a more complex setup, the simplest form of the command reduces to the ...
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3answers
72 views

Newline in a for loop

How can i make a newline in a for loop in bash? I've tried echo -e but its not working. When i am opening a log file everything is on a single line. for i in */ ; do ...
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2answers
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Bash tar and output to log file

How can i write TAR operation in to a log file? tar -czvf arh.tar.gz public_html > 1.log TAR -czvf worked thanks guys! Now in bash script: for i in */ ; do ...
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Rsync do not do anything if files not changed

#!/bin/sh date=`date "+%Y-%m-%dT%H:%M:%S"` rsync -aP --link-dest=/target/current '/source/folder' /target/back-$date rm -f /target/Backups/current ln -s back-$date /target/current This is a little ...
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bash script to tar multiple domain folders

!/bin/bash sitedir="$HOME/domains" logs="$HOME/site_backups/log" tbackups="$HOME/site_backups/today" ybackups="$HOME/site_backups/yesterday" echo "`date`" > $logs/backups.log for i in `ls`; do ...
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1answer
209 views

Simple bash gpg update script

I have a text file in which I save all my important personal data like all my accounts' passwords and my credit cards' PINs in case I forget those. Obviously, that file needs to be encrypted, so I ...
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2answers
153 views

zip subtitle files recursively on linux

I got 2 main folders Peliculas and Series, as you may guess Peliculas has movies on it (some of them on their own folder, the ones that have more than 1 file) and the folder Series has tv shows. What ...
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3answers
281 views

“cp --parents” equivalent on Mac

The topic explains it -- basically I have a bash script used on a Linux system and a Windows system with Cygwin where the following command works perfectly: cp --parents However, running this same ...
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Rsync delete issue

I implemented rsync to backup the data from the server to my local machine,and done it regularly by cron. It works fine but yesterday it deletes the files from the folders on my local machine but on ...
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1answer
23 views

How to create a command line tool to set up web projects?

I am web developer, and everytime I start a new project, I have to set up my folder structure and starter files by hand. Is it possible to write a small command line tool (Bash) that does this for me? ...
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2answers
651 views

extract characters between first and second underscores of filenames and count such files in linux folder

I would like to extract characters between first and second underscores of filenames in a folder and count such type of files present in it. The folder contains files in a particular format such as : ...
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2answers
1k views

Apple Mavericks - why doesn't this one-line BASH script set my Python virtual environment like I expect?

I have the following Bash script: #!/bin/bash echo $MYPROJECT_HOME/bin/myproject_venv/bin/activate source $MYPROJECT_HOME/bin/myproject_venv/bin/activate echo ...
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2answers
142 views

Delete files and exclude some with find [duplicate]

It was an old problem. I knew how to delete files and exclude some, like this: rm `find ~/temporary/Test\ 1 -mindepth 1 -maxdepth 1|grep -v 'A'` but the problem is the folder 'Test 1' containing a ...
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1answer
2k views

Problems using EXPECT is a BASH shell script

This is the code (bash script): echo "Pass for router:" read -s pass /usr/bin/expect <<EOD spawn ssh 192.168.10.1 -l root 'opkg list-installed' > list-installed.txt #echo @pass expect ...
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1answer
596 views

Bash script to pull from master every morning

I'm trying to automate my workplace as much as I can, but I'm kind of new to bash scripts. What is the best way to tell bash script to run git co master and if it is successful do git pull and once it ...
0
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1answer
44 views

apt-cache show bash script

I'm trying to write a bash script that will ask echo "What programme do you want to see?" and then give the answer as 'foo', so that 'foo' can be read by the line which says apt-cache show foo|grep -i ...