Programming :: Unable To Execute FOR Loop In Shell?
Apr 19, 2011hint me why and how to execute the below for loop, the way i am trying to?
[bkcreddy17@local:~]$ cat -n test
1 date
2 ls -l
[code]...
hint me why and how to execute the below for loop, the way i am trying to?
[bkcreddy17@local:~]$ cat -n test
1 date
2 ls -l
[code]...
I am trying to execute a 4GE file using command something like this "/usr/bin/ksh path of the file with some arguments " ex: /usr/bin/ksh /home/abc.4ge S "./xyz" . I am able to execute the 4GE without this "/usr/bin/ksh" specifying in the command which basically runs in ksh shell itself. But when i try to run it exclusively using the path of the shell it gives me an error something like this "/usr/bin/ksh: /home/abc.4ge: cannot execute". I did check the permissions and all the file has execute permission.
View 7 Replies View RelatedI am trying to do some shell programs. I tried some sites regarding the while loop, they give the structure as:
Code:
while [ n1 -lt 500 ]
do
echo $((n1+100))
done
But the below code also worked for me:
Code:
while ((n1 > 500))
do
echo $((n1+100))
done
By using (( )) I could use while, for. But the documentations didnt follow this way. I mainly use this for datastructure programming.
# variable declaration
stt=10
enn=20
stp=1
# I want to do it in the following structure but not sure how to call # the stt, enn and stp in a for loop
for (( i = $stt; i -le $enn; i=i + $stp ))
do
blah blah
done
I have written the following script in my linux server to add users for LDAP database.But i can't able to run this.
The script is as following
#!/bin/bash
echo "Mention the username which you want to convert LDIF format"
read username
if ["$username" -e "/ldiffile/passwd"]; then
echo "Username already exists"
else
cat /etc/passwd | grep -i "$username" >> /ldiffile/passwd
fi
The output which i got :
. ldapadd.sh
Mention the username which you want to convert LDIF format
yal2361
-bash: [yal2361: command not found
please let me know where need to change and what
The two host one is Aix 5.3 and another is Suse 10sp2 the both have the same script which including the following parts:
if [ `date +%a` = "Mon" ];then
if [ "$RESULT" = "" ]; then
echo "The `hostname` $DATE ok"
[code]...
i want to know whether we can write a shell script which can utilize 2 CPU's of a cluster...I heard its possible through C Shell [URL] But im familiar with bourne shell only....So is there a possibility to write Parallel Scripts.
View 5 Replies View RelatedI do not want to use cron.I want it to be instantaneous. I am working on a web server where the hosts turned-on safe mode and turned off a-lot of the functions for PHP (including exec) in order to secure their servers. Outside of that, I do have access to chroot and can pretty much do anything on the server. I want to use ImageMagick to create dynamic images based on form data.
I was trying to find a work-around with PHP where I can still use ImageMagick (a shell-based imagining program) by causing SQL to execute a shell script after the form data is saved to a table. Is there anyway it could cause a flag to automatically run a shell script when someone adds a new row to a certain table. It has to be instantaneous, more or less, so that the user isn't sitting there waiting for a minute for cron to catch any changes to the database.
This is weird. I have a shell script with no execute rights.$ chmod -x test.shThen I try$ test.shwhich does not work. (I have "." in PATH)When I do$ . test.shit works! I can run the script even though I have no execute rights. Why is that?Another question: If I have a shell script without a hash bang, I still can execute the shell script. Why? What does hash bang do? If there is no hash bang, why is the shell script run? What does the hash bang do
View 9 Replies View RelatedI am writing shell script for executing oracle procedure. Shell script need to take 3 parameters from one data file rest of the parameters need to pass in command line it self. Total 7 parameters are need to pass for shell script.1st,3rd,5th parameters need to take from dat file and rest of 4 parameters from command line.
Below is one oracle procedure:
EXEC CIM_MGMT_INSTALL.addFlow('$1','1.0','$1','Settings','$2','ECCD2',NULL,1);
$1is 1st and 3rd both places need to pass same parameter.$1,$2 need to take from data file as earlier says.
Well, I am facing one issue:How can i read two files word by word at a time using any loop as i need word by word comparision in shell script?Please let me know pseudo code.
View 14 Replies View RelatedI am having trouble getting the while loop to execute in the ssh command:ssh $USERID@serverX "while read line do echo $line done<$list_dir/cost_feed.lst.old"Error:bash: -c: line 1: syntax error: unexpected end of fileI have managed to use simpler commands with ssh like:ssh $USERID@serverX "pwd; cp x y"I expect that I need to add some combination of escape characters or semicolons
View 3 Replies View RelatedWhats wrong with this line?Code:sudo -u user /usr/bin/nohup sh /home/user/somescript.sh &This should ask for the password then execute the script at background and get back to menu
View 8 Replies View RelatedLet's say I have 4 subfolders in the folder test as shown below:
drwxr-xr-x 2 muskedear muskedear 4096 2010-04-03 17:11 sub001_p1
drwxr-xr-x 2 muskedear muskedear 4096 2010-04-03 15:38 sub002_p1
drwxr-xr-x 2 muskedear muskedear 4096 2010-04-03 15:38 sub001_p2
drwxr-xr-x 2 muskedear muskedear 4096 2010-04-03 15:38 sub002_p2
I want to loop through the folders and check if they end with *_p1 or *p2. If a given folder ends with *p1, I want to cd to that folder and manipulate certain files in that folder. If the folder ends with *p2, I want to perform different manipulations on certain files.
I have hundreds of files in one directory, is there a simple command or pipes of command I can use to append them together? I don't want to use any loops.
View 4 Replies View RelatedI have just upgraded from 10.4 to 10.10 (x64), and now when I run gnu screen the new shell session goes into an infinite loop displaying:
Quote: Linux dave-desktop 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:45:36 UTC 2010 x86_64 GNU/Linux
Ubuntu 10.10
Welcome to Ubuntu! * Documentation: [URL]...
0 packages can be updated.
0 updates are security updates.
repeatedly until I hit CTRL-C and break out of screen. I tried tmux and that did the same thing, so it is a problem with the shell initialisation rather than with the screen program. However I can start bash, zsh or sh directly in a terminal with no problem.
I'm looking to get a shell script to loop through a number of directories and subdirectories,looking for files that contain a particular substring, and renaming the file by replacing the search string with a different substring. For example if you had a directory full of folders that contained digital photos (along with various other files which would need to remain unaffected), and the intent was to remove the "DSC_" prefix from several thousand files buried within. I've whipped up a rather long-winded solution that works well for this purpose but chokes on directory names with spaces. I am reasonably sure there's a 2 or 3-liner that would accomplish this exact same task.
function investigate
{
path=$1
for file in `ls $1`
#for file in *
[code]....
I modified files in several directories, and need to run a diff on the backup I created before modifying the file.
I'm trying to compose a simple shell script to speed up the task, but getting a syntax error.
Here is what I have:
for i in DIR1 DIR2 DIR3 DIR4 DIR5 do;
diff /maindir/subdir/subdir/$i/filename.txt.old /maindir/subdir/subdir/$i/filename.txt;
done
I know the paths are valid, and if I run just the diff command with the actual DIR1 instead of $i it works.
ill have this question on the test maybe : In dir00 directory create files year01.txt, year02, ...year05.txt with January calendar for 2001-2005 years in it.-i'm lost. i execute this : cat | cal 01 2001 > year01.txt
View 12 Replies View RelatedUbuntu version 10.10File location inside a folder on DesktopFile extn : .shI need to run this file in terminal console, but what path to be given is the question.
View 5 Replies View RelatedBefore I re-installed ubuntu I could just double click a shell script and I got prompted to chose if I wanted to edit it or run it. Now it just opens it in gedit.How do I execute it using the GUI not the command?
View 4 Replies View RelatedI have create a script to start a server(my first question). Now I want it to run on the system boot and start the defined server. What should I do to get this done? My findings tell me put this file in /etc/init.d location and it will execute when the system will boot. But I am not able to understand how the first argument on the startup will be start? Is this predefined somewhere to use start as $1? If I want to have a case startall that will start all the servers in the script, then what are the options I can manage.
My Script is like this:
#!/bin/bash
case "$1" in
start)
start
[code]....
Users will write data on a samba shared folder at any give time. I need to execute a script as soon as some thing is written to that shared folder. What I need to know how to execute a script as soon as something some data is written to that shared folder.
View 1 Replies View RelatedI need to rename the resulted searched files from a loopI have the following code:
find . -name DOC* | while read i
do
find $i -type f -name '*.txt'
done
basically, I am searching for all txt files inside any folder starting with DOC name.this code is working fine with me.I need to rename those .txt files to .txtOLDOS: Ubuntu 10.4Bash shell
I am using following code to read a lien from a file and store the value to a variable $line and execute it.
while read line
do
./$line &
[code]...
I wish to execute a shell script once a button on my html page is clicked.
View 7 Replies View Relatedphp. I am developing a web-interface for an application that sometimes needs root privs. Editting /etc/sudoers is not an option since the web interface needs to be portable to other users when they install my application. Is there any workaround ?PHP Code:
php code:$command = "./script.sh /dev/$DISKNAME &";$shellOutput = shell_exec($command);
Code:
[code]...
I am trying to create a shell script similar to ls, but which only lists directories. I have the first half working (no argument version), but trying to make it accept an argument, I am failing. My logic is sound I think, but I'm missing something on the syntax.
Code:
if [ $# -eq 0 ] ; then
d=`pwd`
for i in * ; do
if test -d $d/$i ; then
echo "$i:"
code....
i have a server program which accept multiple client connection and am using polling. like every 2 secs it will look to client whether any data is received after it binded. i have used setitimer but there is runtime error i got.. the server accept all client connection but doesn't execute any msg which client sent.
#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<netdb.h>
#include<unistd.h>
#include<pthread.h>
#include<string.h>
[Code]....
Is there some type of functional way to read things in the Python shell interpreter similar to less or more in the bash (and other) command line shells?
Example:
Code:
>>> import subprocess
>>> help(subprocess)
...
[pages of stuff to read]
...
I'm hoping so as I hate scrolling and love how less works with simple keystrokes for page-up/page-down/searching etc.