A script is a sequence of commands or instructions that are executed by an interpreter program rather than compiled into a standalone executable program.
2
votes
3answers
75 views
bash script selecting the last path variable
Hey all i am writing my first bash script. and i am making it install all the repos i have on github.
warpInLocations=("git@github.com:acc/toolkit.git" "git@github.com:acc/sms.git" ...
1
vote
1answer
483 views
grep output of expect script
I'm trying to run some expect language, and grep/parse the output all in one script. I want to grep the output of and look for "error" (I should note that standard linux commands like awk, sed, grep, ...
-2
votes
1answer
29 views
bash script user promt for prefered directory
hey all i am attempting my first bash script. so i would like to prompt the user to find out where they would like a cloned repo to be saved
currently i am assigning it like this
...
2
votes
1answer
106 views
How to change Vim's command type mode programmatically?
Is there a simple way to switch from one command type mode to another without loosing the current command line?
In my ~/.vimrc file I remap the <space> and <c-space> character, coming ...
1
vote
3answers
43 views
Solaris: Script for finding the physical device path of all installed fiber cards
I have a number of systems (with quite varying type, generation and architecture unfortunately).
I need to create a list of fiber cards on these varying systems.
I am able to use prtconf -v, and ...
0
votes
2answers
77 views
How to create as many variables as needed from shell script(bash)?
I'm making a script for monitoring some user processes with Upstart but, since its for the company I work for, they asked me to do it generic...how's so?
Well, the number of processes being monitored ...
5
votes
3answers
151 views
Walking through files in directory randomly
How to change for track in *.mp3; do so that all .mp3 files in the current directory are walked through but in a random way?
-3
votes
1answer
65 views
Rename two files [closed]
I would like to rename two files files by using a script.
E.g.
mv plugin-cfg.xml plugin-cfg2.xml
and
mv plugin-cfgbk.xml plugin-cfg.xml
I need to do this in multiple directories.
...
2
votes
2answers
100 views
How to consistently start Vim's command line to make a mapping work in any mode?
I try to normalize access to Vim's command line mode from any other mode in order to simplify my actual mappings. For example to make the <f6> key work from anywhere I define the following ...
3
votes
1answer
43 views
Script not getting executed as per expectation
I have two Perl scripts at a predefined location in Unix. This predefined location is set in path variable ($PATH). Now when i try to run first script (from any location) the script runs successfully ...
0
votes
1answer
36 views
Utility script framework
We have a couple dozen utility scripts that run on various machines to do things like application level backups, pruning out old data, cleaning up disk space, etc. They were written by multiple ...
18
votes
1answer
397 views
How to move a directory, file by file? (instead of “copy then remove”)
My computer has one 500GB drive.
I want to move 400GB of data from /unencrypted to /encrypted.
Both directories are on the same partition, but /encrypted is handled by ecryptfs, so mv /uncrypted/* ...
1
vote
3answers
83 views
sed - how to replace a single quote?
This works fine:
sed -i 's# @driver.find_element(:xpath, "//a\[contains(@href,##' temp_spec.rb
against a source of
@driver.find_element(:xpath, "//a[contains(@href,'change_district')]").click
...
0
votes
1answer
65 views
Use of .. in Linux scripting and makefiles [closed]
what is the use of .. in linux scripting and in the following makefile?
MODULE =
EQUALIZER = ..
SRCS =
include ${EQUALIZER}/xyz.mak
include ${EQUALIZER}/pqr.mak
1
vote
2answers
65 views
How to monitor the last PID assigned by the kernel?
To monitor process creation I'd like to periodically write the last PID assigned by the kernel to any process on the system (not just processes created by the PID-monitoring program) with a time stamp ...
1
vote
3answers
50 views
How to share a GNU sed script between Linux and Mac OS X
I have a GNU sed script I use on Linux; it is installed at /bin/sed and it seems it contains GNUisms. I have collaborators using Mac OS X. They have installed (non-GNU) sed, located at /usr/bin/sed, ...
16
votes
7answers
21k views
Looping through files with spaces in the names?
I wrote the following script to diff the outputs of two directores with all the same files in them as such:
#!/bin/bash
for file in `find . -name "*.csv"`
do
echo "file = $file";
diff ...
13
votes
8answers
3k views
Object-oriented shell for *nix
Preface: I love bash and have no intention of starting any sort of argument or holy-war, and hopefully this is not an extremely naive question.
This question is somewhat related to this post on ...
5
votes
5answers
209 views
How to remove multiple blank lines from a file?
I have some text-files I use to take notes in - just plain text, usually just using cat >> file. Occasionally I use a blank line or two (just return - the new-line character) to specify a new ...
3
votes
1answer
355 views
Auto-login to internet script
For me to connect to internet I need to login first. Normally I do this manually (by opening my browser then at the first URL I enter I am redirected to the ISP's login page). However there is a Perl ...
1
vote
1answer
69 views
Why ssh -nq -t can't see my environment variable?
I am executing a command on remote machine with -t flag ( to prevent the command from 'blocking' ) the prompt (somehow it works that way). So I am using ssh -nq -t root@ip but with this, the script ...
1
vote
2answers
63 views
Commands for determining level of usage of server
I am scripting a new program that will connect to a cluster of machines in a VM park, and hopefully check their level of usage.
The VM clients are a combination of RHEL and CentOS, and runs on ...
1
vote
1answer
333 views
Script that unpacks a initrd, allows editing of the preseed.cfg and the packs it to cpio and gzip again
I want to program a script that allows what is said in the title. So basically I gunzip the initrd, than unpack the cpio, open vi to allow editing, save, pack with cpio, and gzip again, so nothing ...
4
votes
3answers
90 views
How to constraint time a program runs in Linux?
I have several simulations to do, each is invoked with python simulate.py <parameter list>. The problem with these simulations is that some of them hang without quiting, which prevents me from ...
-1
votes
0answers
22 views
Creating a multicolumn test menu from a script
I would like to create a text menu from within a script.
I would like it to be multicolumn or a grid with multiple options for each entry.
Let me give an example:
Let us take the letters A-L and ...
3
votes
7answers
621 views
Write a remote managing script
I need to be able to locally run a script that will connect to various servers and run commands on them. What is the best way to accomplish this?
21
votes
5answers
3k views
What Unix commands can be used as a semaphore/lock?
I want to run multiple Bash shell scripts in parallel. However, I want to avoid race conditions. What Unix commands are truly atomic that I could use for this purpose, and how can I use them?
8
votes
6answers
482 views
Best way run a command on each file in a directory tree
There appear be a number of ways to do this including loops in shell script, find and xargs. Which of these is best, and which is most portable?
1
vote
2answers
269 views
Import single rows from SQLite to MySQL?
I need to do some kind of incremental import again and again from a SQLite 3 database to a MySQL database. Column names are the same in both databases. Is there a good way to do this by a script ...
2
votes
2answers
111 views
/usr/bin/env: zsh -: No such file or directory
I get the error
/usr/bin/env: zsh -: No such file or directory
...when I run an executable zsh script that starts with the following shebang line:
#!/usr/bin/env zsh -
Also, FWIW, replacing - ...
1
vote
1answer
79 views
How to clone a read-only portion of /proc file system
The problem with reading /proc file system is that it is not atomic. I tried using a library (procfs in Python) that wishes to read it, but it has glitches about 5% of the time because the process ...
2
votes
3answers
62 views
Scripting to domain allocation to server
I have two text files:
file #1: domain.txt
cocacola.com
airtel.com
pepsi.com
file #2: servers.txt
192.0.53.42 , 4 # 4 domains already allocated on server 192.0.53.42
192.53.1.2 , 1 # 1 ...
5
votes
4answers
158 views
Hybrid code in shell scripts. Sharing variables
This answer discusses how to run a multi-line Python snippet from the command line in a terminal. I noticed that the answer works great within shell scripts, even with nested indentation, which is ...
0
votes
1answer
83 views
Counting files on a remote server with ssh and an expect script
Below is my script to take count for files which are present in remote server.
But it is not working. Please help me.
#!/usr/bin/expect
spawn ssh sduser@172.0.0.2
expect "123"
send "123"
interact
...
-5
votes
0answers
47 views
Linux Bash Script [closed]
I am currently in need of a simple Linux script which provides a menu to any user, where they are able to either add or delete a user, where if they choose to add the user they can do so via a text ...
0
votes
2answers
57 views
Executing a program according to the last modified date
I need to write a script which would execute some executables in a directory according to the last modified date. The oldest should run first. How do I do it?
This is what I have done so far
for f ...
1
vote
1answer
117 views
Replacing Evernote with Emacs and markdown - .org file list
I have grown tired of using evernote with wine or with any of the linux clients. I decided to change to Emacs and write all my notes in markdown so I can easily publish them in HTML and sync them with ...
2
votes
2answers
443 views
If Statement with 2 Variables - Bash
I am trying to write a single IF statement which can check two variables at once.
I have two variables, for example:
$VARA
$VARB
Both with either contain a 0 or a non 0 value. I need an if ...
86
votes
16answers
39k views
Repeat a Unix command every x seconds forever
There's a builtin Unix command repeat whose first argument is the number of times to repeat a command, where the command (with any arguments) is specified by the remaining arguments to repeat. For ...
1
vote
2answers
47 views
Direct recursive shell script output to each subdirectory, not parent directory
I'm processing a batch of subjects data recursively, calling the script within the parent directory.
For example, I have the parent directory:
/home/subjects
and the subdirectories which contain ...
4
votes
3answers
70 views
CD into directory from HISTORY in a bash script or alias e.g. $(!!)
I often want to change into the directory of a file on my file system, but I'm not sure where the file is.
I search for it like so:
find -type f -name "myfile.txt"
Lets say for the sake of ...
2
votes
1answer
43 views
Invoking a script with ld-linux.so?
I just downloaded a tar file that is supposed to include everything required to run a program that we can call some_binary. I extracted it's contents, and I see the following:
A binary (let's call ...
2
votes
1answer
149 views
vim auto complete custom list
I had these two questions about this function
" how do I load a file into a list here?
" set some variable
func! CustomComplete()
" and then read the variable here so that b:list = a \n split ...
2
votes
1answer
100 views
Script to check a folder, print the files then delete those files
I am looking for some guidance on creating a script that will check a specific folder, print all documents (if any) and then delete those documents. I would also like to run this script as a cron job. ...
2
votes
4answers
767 views
cut / grep and df -h
How can I grep or cut the "173G" under "Verf"?
I need this for Unix scripting in school.
jonas@jonaspc:~/$ df -h /dev/sda2
Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf
/dev/sda2 ...
0
votes
1answer
54 views
How to get the arguments to a php function via grep?
I am writing a script to let me know the database login info for each PHP-based web site on a server that I am migrating. The login information is usually done either like this:
...
5
votes
3answers
2k views
Storing output of command in shell variable
I have an operation using cut that I would like to assign result to a variable
var4=ztemp.xml |cut -f1 -d '.'
I get the error:
ztemp.xml is not a command
The value of var4 never gets ...
1
vote
0answers
21 views
rsstail Not Printing Output
I've installed rsstail 1.8 on my linux box and everything seems to be going smoothly, knock on wood, except for the part where rsstail isn't printing the streams. Running the command, I see that it's ...
2
votes
2answers
77 views
What scripting language can I use to automate a concatenation & zipping process?
For a project I'm doing I need to concatenate and compress (with zip) many (midi) files and compare their sizes. I've thought there must be some language that allows me to do something like this:
...
1
vote
3answers
320 views
Evalute passed in variable in bash
Is there a way to pass in a variable as an argument to a bash script and have it evaluated scoped by the bash script?
Given:
# cat /path/to/file/of/host/names
bob
tom
joe
etc...
# dofor
FILE=$1
...
