Questions about shell scripts, executable files that are interpreted by a shell (bash, zsh, etc.).

learn more… | top users | synonyms (2)

3
votes
0answers
97 views

Get notified from avahi

After looking for a zero-conf browser valid implementation I realised that inside my linux machine (ubuntu) I already have avahi and typing: avahi-browse -alr I get a complete list of all devices ...
3
votes
0answers
223 views

Securing a script a little more

I currently have the following script which works fine: #!/bin/sh user="$(zenity --entry --title="Username" --text="Username")" pass="$(zenity --password --title="Password" --text="Password")" ...
3
votes
0answers
793 views

Number comparisons in BusyBox ash

I have the following script that extracts data from the EXIF command on my BusyBox ash-based system. I parse the date tag from the end of the file and use case as a final check to ensure the format ...
3
votes
0answers
174 views

Understanding line numbers reported when using eval

Okay, so I'm stuck working with a shell script that needs to use eval (I know, I know, ultimate evil etc…) however I'm having difficulty debugging some of the line numbers being thrown out by errors. ...
2
votes
0answers
23 views

How to properly use $_ inside a tcsh script sourced from another tcsh script?

I try to retrieve the result from $_ inside a tcsh script itself sourced by another tcsh script (I'll refer to them respectively as the inner and outer script). But $_ is not set with the value I ...
2
votes
0answers
36 views

How do I write a Bash script to autoadjust the screen resolution of Enlightenment 20 running under VirtualBox?

I have noticed that VirtualBox guest additions fails to autoadjust the screen resolution of Enlightenment 20 on a few different platforms (including Arch Linux, Lubuntu and openSUSE Tumbleweed), see ...
2
votes
0answers
40 views

OS/X: can't execute shell scripts - spawns a new window which exits immediately

Issue: When I try to open any shell scripts a new window is spawned, which exits immediately. Files .bash_profile, .bashrc and a helloworld.sh are tested examples. Interestingly, running open ...
2
votes
0answers
17 views

On using $hash_array[$(global_alias)]

Identical code works on one system, fails on another: % zsh --version zsh 5.0.7 (x86_64-pc-linux-gnu) % typeset -A frobozz % alias -g foo='echo xyz' % frobozz[$(foo)]=9 % echo ${(kv)frobozz} xyz 9 ...
2
votes
0answers
39 views

How to avoid namespace collisions/pollution in a script meant to be sourced?

I want to implement a script foo.sh that culminates in the an execution of a command bar (with some arguments). The command bar modifies the current shell environment, which means that foo.sh must be ...
2
votes
0answers
74 views

Unable to start ZNC as a service

Firstly, this is the exact same question as found here, but the given solutions did not work in my situation. Background I am running a CentOS 6 VPS and I want to run a ZNC bouncer on it. I ...
2
votes
0answers
36 views

How do I process new additions to logs

I know that I can use a few tools like tail and less to view the newest additions to a growing log file. What I want to do, though, is run some sort of script at regular intervals (like cron) on the ...
2
votes
0answers
197 views

Bash - Convert escape character colored text to BBCode

I want to convert a terminal escape-character colored text file to BBCode colored text. For this i've created an Android logfile with logcat -Cd > /sdcard/logcat.txt. The -C switch adds the color ...
2
votes
0answers
108 views

Generate array of strings combined with number

I would like to generate a local array in a shell/bash script that consists of the following elements: JF-1998, JF-1999, JF-2000,... , JF-2011. That is, a string JF- combined with the years from 1998 ...
2
votes
0answers
79 views

“login -qf” as root results in “Login incorrect” error

I'm trying to install pow on an OS X machine.* Some of pow's components have to run as root, so part of the setup process involves running an installation script with sudo. The problem is, this setup ...
2
votes
0answers
99 views

Copy folders at once

I want to copy a large number of folders at once not one by one. Is it correct to use the following code ? Is it helping to run the command cp for all the folders i at once? #!/bin/bash foreach i in ...
2
votes
0answers
270 views

Udev running hibernation script

I have this udev rule that launches a script when the battery level is 5% or below: $ cat /etc/udev/rules.d/90-lowbat.rules: SUBSYSTEM=="power_supply", ATTR{status}=="Discharging", ...
2
votes
0answers
58 views

unbuffer/expect swallows the rcode when its child is signaled

unbuffer is able to pass along the return code of a process under normal circumstance, but if the process you are unbuffering is killed, for instance with a segfault, I see $? as 0 while I expect 139. ...
2
votes
0answers
179 views

background gui process in shell script

In the below script, ivfstudio commands open a gui. Even launched as a background process, I need to close it first so that the next commands are executed. How to make it "really background" ? ...
2
votes
0answers
161 views

Shell scripts for the database logs

The actual log file will be like this $ cat file1.log time=2014-07-23 23:56:28 GMT, user=[unknown], db=[unknown], host= pid=28254 LOG: time=2014-07-23 23:56:28 GMT, user=portalman, db=ss, ...
2
votes
0answers
88 views

Scripts cannot run simultaneously on startup

I want two scripts (Server_drive, Server_video_boot) running on startup, but there is conflict between them. Specifically, there is always running the script with the lower priority. I tried with many ...
2
votes
0answers
4k views

Creating multicast join for tcpdump captures

I want to write a linux shell script which will capture specific multicast traffic. Specific as in, I want to create a pcap file that has all the traffic for one specific multicast group/port. Here ...
2
votes
0answers
260 views

Why is my inotifywait loop exiting after removing some subdirectories?

i have the following bash script: #!/bin/sh dir1=/source/dir/path/ while inotifywait -qqre modify "$dir1"; do rm -r /destination/dir/path find /source/dir/path/ -name .svn -exec rm -rf '{}' \; ...
2
votes
0answers
239 views

Check via Shell-script if server currently streams via dlna

Currently I'm running uShare to stream videos from my home-server via DLNA to the TV. On the server there is also running a bash-script which checks if a user is connected via ssh or Samba. If this is ...
2
votes
0answers
3k views

Script stops command in it with exit 0

When I write a bash script similar to this on RHEL 6, if [ "$2" = "" ] ; then echo vip.start: ERROR: no NIC specified echo vip.start: Need IP and base interface name exit 1 fi case "$1" ...
2
votes
0answers
110 views

how to list blocked connections events by the firewall?

So, I used firestarter that had logged blocked connections events with some useful details (but it is not being updated and I found somewhat unsafe as any moment we could click to deactivate the ...
2
votes
0answers
646 views

Validate Password for user account from shell script

Application is for a multiple server standardization script Looking for a way in a shell script to check if the password for an OS account (AIX) matches a standardized plain text password. The ...
1
vote
0answers
8 views

i3status script that change its text by itself

I am trying to add a block for rss the latest news in my status bar. The news is composed by a title and a description. The full text doesn't fit in the status bar, so I would like to make it read ...
1
vote
0answers
35 views

Bold and Underline using echo with email

I am using a script that emails me a particular status report. The script sends me the contents of several files. I am using echo to provide a heading in the email that is used to differentiate ...
1
vote
0answers
50 views

File exists but errors with “mv: cannot stat: No such file or directory”

For some reason my script cannot copy or move files that exist. It comes up with the errors below. Can someone tell me why? cp: cannot stat '/mnt/sd/bbu/install/scratch/bin/.': No such file or ...
1
vote
0answers
20 views

Piping to 'tee' commands prevents changes in environment variables

I have a csh script using which I modify certain environment variables and echo values of these environment variables from within this script. I source this from another script: source ...
1
vote
0answers
18 views

How to count nodes and get attribute value without using xpath

Currently I have a shell script like this: LOGIN=`curl 'https://www.ponta.jp/u/LWAS900/SLWAS900010.htm' -sS | grep '<input type="hidden" name\|<form\|</form'` for i in $(seq $(printf ...
1
vote
0answers
41 views

Error “dircolors: no SHELL environment variable, and no shell type option given”

Running Linux Mint 17.3 Cinnamon A while ago a created a script that changed the colors in the Terminal (to match a tutorial I was following) However if I open the terminal on another account, I get ...
1
vote
0answers
14 views

Schedule (Cron) executing tasks based on bash scripts using CronniX

I'm still quite new you Mac and OS X but do have some background about other UNIX based systems, so please excuse for any misunderstandings. My goal is to implement a function that executes certain ...
1
vote
0answers
26 views

Netcat server/client for a social thread

I have been learning nc for a while now, and I decided to make a social thread server for it in bash. Surprisingly, I got it working, but I have a couple problems with it. My main problem I want to ...
1
vote
0answers
14 views

Autoloading a particular driver, based on a detected specific kernel

I need some help in writing a tiny script and determining its placement within Debian 7.9 filesystem. As the title says, the script needs to be executed automatically on startup and, after checking ...
1
vote
0answers
12 views

Need Help to Solve Screenlock Bypass Issue for Expired User Account

I have created a script that I deploy to my children's computers via Salt. The script implements allowed working hours and has worked well, but one of my children have found a way of bypassing this ...
1
vote
0answers
36 views

Unix: C-shell:Disk space checking in Hp-UX

i have 10 devices that using hp-ux and i want to check the disk space in each devices. my requirement is if the space more than 90%, the info of device ans space will be save to a log. this is list of ...
1
vote
0answers
39 views

Print Dialogue configuration to command line

I need help figuring out which program gets called with what all arguments when I print a file using the standard print dialogue with a specific configuration, so I can automate it using a script. ...
1
vote
0answers
28 views

/bin/csh Event not found ? C-shell

I know this question has and does come up a lot (I know because I pounded Google to death and often came back here from the redirects). Below is my script. I'm not entirely certain what I am missing, ...
1
vote
0answers
60 views

How do I convert the complete AMD64 Gentoo Handbook into a PDF from the command-line?

I have been writing shell scripts for converting the AMD64 Handbook of Gentoo Linux to PDF and this is my current shell script: function ghand { # Input 1 is the architecture # Input 2 is the ...
1
vote
0answers
56 views

error in count script for number of occurences

I have written a small script to count number of occurrences of logs in a particular file. The following is my code: #!/bin/sh count=1 while read line do found=$( grep M $line ) OCCURENCE=$( ...
1
vote
0answers
36 views

Change events order in bash script that writes to crontab

Coming from the solution on this post I have made a few changes to the original script but output is not like it should be. Below is the script as I have right now: #!/bin/bash add=$1 ...
1
vote
0answers
36 views

shell script to join 2 files on basis of 2 columns and if a match found then write some fields

abc.csv TBL_NAME,SANDBOX_NAME,SCRIPT_NAME ccti_prod_attdnl_ext,abs_ext,101_ext_table.m_diag.pset ccti_prod_attdnl_ext,abs_ids,101_ext_table.m_diag.pset xyz.csv ...
1
vote
0answers
101 views

Slow script execution

I have a strange problem... My script: #!/bin/bash SECONDS=0 lock_file=/tmp/$0.lock [ -e $lock_file ] && exit touch $lock_file echo "<<<db2_hadr_check>>>" instances=( ...
1
vote
0answers
36 views

Pass passwordlist to 7zip

I'm writing a shellscript to automate my 7zip, rar etc extraction tasks. Normally JDownloader2 does this for me when I download files through it, but when I download files by hand I will still need to ...
1
vote
0answers
40 views

Find all physical interfaces in FreeBSD

I have a use case to find all physical (no virtual or vlan interfaces) on FreeBSD. How can I get a count of the number of physical interfaces on a box consistently regardless of any virtual interface ...
1
vote
0answers
18 views

How do I escalate a signal?

For the past week, I been having a bug that my python code hasn't been doing a cleanup process properly. It was suppose to once it captures a signal caused by closing the terminal, it does some ...
1
vote
0answers
128 views

TOR hidden service not always accessible through cURL. Takes multiple tries

When I try to access a hidden service on TOR using cURL, for some reason I'm not getting access to the site 100% of the time. Many times it returns "curl: (7) Can't complete SOCKS5 connection to ...
1
vote
0answers
51 views

Bash completion function for vim 'scp://' Paths

For easily editing remote files with vim, I currently use a few .vimrc and .bashrc additions to my environment. The bash-scripting side of it "misuses" the available standard _scp bash completion ...
1
vote
0answers
98 views

How to scan for wireless networks fast

I have written a script which scans for wifi networks with iw dev wlan0 scan and put the SSIDs in a file. Is there a similar tool wich works a bit faster?