0
votes
2answers
7 views

shell script for auto-touching files

I have written a shell script to touch all the files in the /tmp directory. However, there was an error message saying that "/bin/touch: Argument list too long". What's the cause of the problem? ...
1
vote
1answer
28 views

How could i flip content of a binary file with bash commands

I was wondering if it's possible to do bitwise conversion on a binary file, with bash commands, (in my case bitwise negation).
2
votes
1answer
25 views

Calculate Apache's response time for last 10 seconds

I have the next apache's log format: LogFormat "%h %l %u %t \"%r\" %>s %b %D \"%{Referer}i\" \"%{User-Agent}i\"" where's %D - The time taken to serve the request, in microseconds. I want to ...
0
votes
1answer
29 views

How do I validate a settings(ini) file for the values expected using bash?

After I check if the ini file exists where it is expected to be, which I've learned how to do, I would like to check the file for proper formatting. I'd like to validate any number of "site" entries ...
3
votes
3answers
211 views

Preventing a specific space from being expanded in a variable

In bash how do you avoid a specific space from being expanded in a variable? Lets say I have this JAVA_OPTS="-Xmx1g" JAVA_OPTS="$JAVA_OPTS -XX:OnError='/path/to/a/script.sh %p'" function args() { ...
0
votes
1answer
44 views

Using bash's “source” command return error though it successfully read config file [duplicate]

I want my bash script to read parameters from config file. Here is what inside the script: #!/bin/bash source /home/myscript/conf/config.conf echo "$username" and below is my config.conf: ...
3
votes
3answers
67 views

Script to email all matching files in a directory

Trying to set up a bash script to automate sending data files. Desired end result is to check a specified directory once per week, make a list of all Excel files modified within the last 2 days, and ...
2
votes
2answers
53 views

Why does the while cycle skips and only reads the first line?

$ ls testscript.sh testservers.txt $ cat testservers.txt serverA IMM 10.2.3.4 USERID PASSW0RD serverB IMM 10.2.3.5 USERID PASSW0RD $ $ $ cat testscript.sh #!/bin/bash # test them.. egrep ...
1
vote
0answers
39 views

When gnu parallel exit,my program also fail

I use gnu parallel to run a bash function. The function just contains the bash script to restart my program. At first, the restart is ok, but when the gnu parallel script exits, my program also fails. ...
-4
votes
0answers
44 views

“unexpected end of file” error in a bash script [closed]

#!/bin/bash APP_FILE="/tmp/name_file.txt" IPFILE="/tmp/ipaddres_file.txt" PINGDETAILS="/tmp/ping_results" NEWFILE="/tmp/new_file" echo "" > new_file echo "" > ping_results serverup_count=0 ...
3
votes
2answers
46 views

Why is my trap not printing any log message?

What I'm doing is, trap 'rm -f /path/of/file/fileName.running; echo "TRAPPED & READY";' 1 2 9 15 >> trap.log I didn't get anything in log & the file which should have been deleted ...
2
votes
1answer
463 views

Why is 'kill -9' killing browser as well as server?

I sometimes have to use kill -9 as a last resort to kill my rails server. Unfortunately, I have to do that often enough that I wrote a helper function in my bash_profile to do it. If I do it manually ...
0
votes
2answers
53 views

Shell script to work on files in some directory

I am a noob in Linux hence this might come as a silly question. I have a Windows system, so I downloaded cygwin to help me execute Linux/unix commands. I need to execute a shell script on a bunch of ...
0
votes
2answers
35 views

Getting expr: syntax error on index [duplicate]

Using this OF=$(ps fax | grep 'php-fpm: master process' | awk '{print $1}') IDX=`expr index $OF ' '` I get an error. The results of the $OF variable are: 27797 27495 What is the error here? I ...
0
votes
1answer
61 views

Reject SSH connections from unlisted countries, using hosts.allow/hosts.deny on CentOS

I was trying for few hours to make my custom script work when using hosts.allow/hosts.deny, to prevent connections to SSH and other services supporting TCP wrappers from unlisted countries. Example ...
2
votes
5answers
40 views

Append files with bash one-liner?

Currently I use multiple lines to append content into a combined file, e.g. ./myprogram 1.txt > Out.txt # Overwrite for the 1st file ./myprogram 2.txt >> Out.txt ./myprogram 3.txt >> ...
1
vote
2answers
40 views

Sending most recently created file via Email

I'm trying to send a log file every 24 hours or so via email. Currently I am using mutt for this. You can call mutt like this: mutt -s "Log" -a file_attachment example@example.com I know I can ...
1
vote
1answer
33 views

Compare file size of multiple files in an array [closed]

Scenario: Ftp site has 100s of files. Once a day, all the .gz files are copied to an AWS site then renamed. Only the date is kept in the file name. Some of the files corrupted during copy. A txt ...
2
votes
0answers
26 views

Tmux log output [duplicate]

Im looking for a solution to an issue regarding tmux. One of my scripts ns2server stopped working recently when running start (using tmux) but not in debug mode (not using tmux). I found that using ...
6
votes
3answers
150 views

Attempted assignment to non-variable?

We can use arithmetic operations inside shell script function: function mess { if (( "$1" > 0 )) ; then total=$1 else total=100 fi tail -$total /var/adm/messages | more } I ...
0
votes
1answer
71 views

Launching a program and executing a command in bash script [closed]

How can I execute a command inside ROOT that I launch within the bash script? My aim is to have ROOT execute its GUI file browser and have it open if the user does not interfere with keyboard ...
3
votes
1answer
39 views

How do I parse a string in bash into variables using a tab as the delimiter and preserve spaces?

I am in the process of writing a bash script to display various statistics, some of which come from a MySQL database. The pertinant code I'm having difficulty with is: read min max rows <<< ...
3
votes
1answer
85 views

two if conditions in for loop bash scripting

I've trying to make two if conditions in for loop. Is it possible this? Now doesn't return anything from second if only two OK from first if. #!/bin/bash servers=("212.39.82.157" "212.39.82.157" ...
2
votes
2answers
39 views

Read Multiple Entries from an Input File

I wrote a program in Fortran that asks me for latitude and longitude and the name of the output file every time I run it. It works great. What I have been meaning to do is run this program for the ...
0
votes
1answer
42 views

How to evaluate a variable length in shell script?

I want to write a shell script, in which it will call different command according to the variable length. But I didn't figure it out yet. My unwork script is here: for i in n5 n25 if ${#i} == 2; ...
1
vote
1answer
36 views

How can I use global variable arrays in aliases or functions

I am attempting to simplify repetitive work procedures. In doing so, I am trying to write a .bashrc script which will set global path variables that aliases can refer to. Disclaimer: I'm new to linux ...
-4
votes
3answers
71 views

Birthday reminder

write a bash shell script to get the alerts of friend's birthday Suppose Birthday Date Friend's name 08-02-2014 : Prashant 08-15-2014 : prabhat 09 -16 -2014 ...
2
votes
4answers
103 views

Change to the last modified subdirectory of the current directory

I have an application which generates a couple of files in different directories at a regular interval and I need to check the latest files generated, i.e. the file which is generated in the most ...
0
votes
1answer
57 views

Writing a Bash script to run and end at specific times

I'd like to create a script that will do the following. Start at a given time during the day and end at another given time. So for example, I have a program I'd like to test, so my script would be ...
2
votes
3answers
65 views

moving a (file | directory) while avoiding filename collisions

I have a bash script that moves files from a number of different locations to a folder named completed. I want to avoid overwriting previous files, so in the case when the name of a file (for ...
8
votes
6answers
419 views

How can I test if a variable is empty or contains only spaces?

The following bash syntax verifies if param isn't empty: [[ ! -z $param ]] For example: param="" [[ ! -z $param ]] && echo "I am not zero" No output and its fine. But when param ...
2
votes
3answers
102 views

Count files in a directory by extension

For the purpose of testing, I'd like count how many images files are inside a directory, separating each image file type by file extension (jpg="yes". This because later it will be useful for another ...
4
votes
1answer
118 views

Proper way to distribute shell scripts

What is the most proper way to distribute shell scripts, if behaviours of shells can be modified by set and thus are unpredictable? For example, rm *.txt wouldn't be executed as expected on the ...
-1
votes
0answers
56 views

Unique id for combination of Latitude - Longitude

I have a LibreOffice Calc table containing one column with latitude and one with longitude. What I want to do is for every unique combination of latitude and longitude a unique number to be assigned ...
2
votes
2answers
85 views

How to clear the input in Bash

I have a bash script that is reading quite a bit of data /dev/random. I need the user to type randomly to seed the random daemon. However once the script completes everything typed will get dumped to ...
2
votes
1answer
57 views

Memory buffer in a bash script

I have recently finished a script that will ask for a hostname and automatically take the argument of the function and ssh into one of my work servers. Here is a copy of my script: #!/bin/bash echo ...
8
votes
3answers
431 views

Creating a Bash script that will execute a program and if it exits without crashing, will run it again

I'd like to know the easiest way of creating a bash script that will run an app in MacOSX (it's a UNIX based system so I assumed this was the right place). wait for the program to exit. If the exit ...
1
vote
2answers
184 views

How to iterate through multiple file extension without caring about case sensitivity?

I've seen various topics on how to iterate through multiple file extensions but in most case, the list is defined. example: for file in ${arg}/**/*.{txt,h,py} do .... done As can be seen, ...
5
votes
3answers
193 views

How to iterate through a list of files with spaces that is sorted (case insensitive)?

I am doing this in OSX which uses bash but obviously, not all bash conventions are used so hopefully your suggestion is available to me :) I have the following files fun bar1.txt Foo bar2.tXT ...
-4
votes
2answers
105 views

“bash: [: : integer expression expected” [closed]

I want this function to return one random word if there aren't any command-line arguments. I am modifying linuxconfig.org's random-word generator to run even when #$ -ne 1. function random-word { ...
2
votes
1answer
37 views

Fetching Remote Windows System Information From Linux Server

I need a script/command that would fetch Windows System Information (Host Name,User Name, Domain, OS Info, Hardware Info, Memory Info, processor Info, etc) by running it on a Linux Server (RHEL 6.5 ...
6
votes
3answers
354 views

How you stop 'wget' after it gets a 404?

If you use brace expansion with wget, you can fetch sequentially-numbered images with ease: $ wget 'http://www.iqandreas.com/sample-images/100-100-color/'{90..110}'.jpg' It fetches the first 10 ...
6
votes
2answers
77 views

Passing arguments from a file to a bash script

I' ve got this situation: ./ ./myscript.sh ./arguments.txt ./test.sh Inside myscript.sh, i have to run the file test.sh, passing to it the arguments contained inside arguments.txt. myscript.sh is: ...
4
votes
6answers
187 views

Finding the number of time a particular number in a file where range also specified

I have a file with numbers separated by ,(comma). In between it also contains a number range like 300-400. Say for example I have a text file, namely testme.txt which looks like, ...
2
votes
1answer
67 views

Asteriks in filename as wildcard not working [closed]

So I have a folder with many files like 20140720.457812.tmp and I try to count how many lines they have, I tried this: #!/bin/bash lines=`more /folder/20140720*.tmp|wc -l` but I get this error: ...
12
votes
3answers
478 views

Comparing two strings in Bash

I have the following if block in my bash script: if [ ${PACKAGENAME} -eq kakadu-v6_4-00902C ]; then echo "successfully entered if block!!" fi The script execution is not entering my if block even ...
3
votes
2answers
55 views

Creating Menu list and Executing the Task

I was given the the Task to create a menu in Linux but it appears it's not coming out great. When I select something I want to be able to perform that task then go back to the main menu when I finish. ...
1
vote
1answer
34 views

how to use the eval command in order to print the value of parameter

Please advice how to use the eval command in order to print the parameter value for example bash a=1 b=2 c=3 for i in ` echo a b c ` > do > echo "$i=` eval $i ` " > done bash: a: ...
1
vote
4answers
73 views

Compare two numbers read from a file

I have a script that reads a file with a standard format where the 9th word is a number. I am trying to compare the number that is read from the file. I am able to read the line correctly and it works ...
0
votes
1answer
66 views

Parse lines of output from bash loop

I'm trying to parse the output of commands run in a bash loop. Here is an example: $ for i in `git log --format='%H'`; do echo $i ; git branch --contains $i; done | head -n 8 ...