Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Anyone know?: How the 'for'-loop could stop working in interactive bash shell?! Post 302257115 by alex_5161 on Tuesday 11th of November 2008 11:35:20 AM
Old 11-11-2008
So, by that checking, the $SHELL is not much representing. It keeps a loging shell. Any other started shell processed as a regular running task and does not update the env-SHELL.
Maybe not completely nice, but could be understood.

(off-top, but I did not ubderstand construction
Code:
version >/dev/null 2>&1 && version =o $(_eat $0 $1) bash3 tcsh ksh zsh dash rc

I see the 'version' is checked on acceptance (ignoring all output), and, after that - I guess, it is used for list of words.
It seems that part works like 'for .. in ...; ...', but it is surprizing for me and does not clear how it is done.
'_eat' - is it something local, as a 'version'?
'=o' - it looks strange, isn't it a typo?
It seems the
Code:
version $0 bash3 tcsh ksh zsh dash rc

whould be enouth to present the version number (as I could guess the 'version' functionality) Am I wrong?
Anyway, I do not see the meaning of this execution:
Code:
$(_eat $0 $1)

Maybe you could give some description?! I will appreciate it!)
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

korn shell to bash - statement not working

Everything else seems to be working, but this isn't. Is it the "cat..." that is wrong of the condition? Thanks. cat tc_result.txt | while read LINE do if then let "files_run += 1"; echo "inside the if loop" # save current filetype case $LINE... (5 Replies)
Discussion started by: brdholman
5 Replies

2. Shell Programming and Scripting

if loop not working in BASH shell

i have this code for a simple if loop: #!/bin/bash array="1 2 3 4 5" array2="5 6 7 8 9" if } -gt ${array} ]; then echo "${array2} is greater than ${array}!!" fi the error is ./script8: line 9: [: too many arguments ./script8: line 9: [: too many arguments ./script8: line 9: [:... (10 Replies)
Discussion started by: npatwardhan
10 Replies

3. Homework & Coursework Questions

Help with Interactive / Non Interactive Shell script

Q. Write a script that behaves both in interactive and non interactive mode. When no arguments are supplied it picks up each C program from the directory and prints first 10 lines. It then prompts for deletion of the file. If user supplies arguments with the script , then it works on those files... (1 Reply)
Discussion started by: rits
1 Replies

4. Shell Programming and Scripting

Null Handling in Until loop. . .loop won't stop

Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have: ... (4 Replies)
Discussion started by: brandono66
4 Replies

5. Shell Programming and Scripting

Shell Script not working using for loop and a funtion

Hi- Here is the shell script that for some reason is not returning results: #! /bin/ksh - avg() { AVG=0 typeset SUM=0 if then echo "You must have at least two numbers" else for NUM in "$*" do ... (2 Replies)
Discussion started by: koomba
2 Replies

6. Shell Programming and Scripting

export not working in Bash shell

Hi Friends, I am presently migrating shell scripts writter in KSH to SH.I am stuck at this place and i am not able to find a work around:- Let the script name is x.sh Below are some of the codes in it... export abc=hello export abc=hi export abc=how When i am trying to compile the script ... (6 Replies)
Discussion started by: amit.behera
6 Replies

7. AIX

Shell script stop working

I have a strange problem. I have the following in a cron to find files older than a day. find /dir1/dir2/ ! -name . -prune -name "s*.txt" -type f -mtime +1 -exec echo {} \; | wc -w It was working fine for the last few days now it suddenly stopped working. I can clearly see files in the... (5 Replies)
Discussion started by: bbbngowc
5 Replies

8. Shell Programming and Scripting

BASH: Factorial using FOR loop not working

Hi, I am trying to run the factorial script but it’s not working. The code is mentioned below: ------------------------------------------------------------------ /home/gc> cat fact.sh #!/bin/bash # using one command line parameter factorial=1 for (( number = 1; number <= $1 ;... (3 Replies)
Discussion started by: Technext
3 Replies

9. Shell Programming and Scripting

Shell script loop not working

Hi I'm using this script to transcode videos in an Ubuntu 12.04 machine. #! /bin/bash MOVDIR="/media/topaz_1/media/transcodes/transcode_mov/" MOVDESTDIR="/media/topaz_1/media/transcodes/final_mov/" DONEFILESDIR="/media/topaz_1/media/transcodes/dv_cache/"... (1 Reply)
Discussion started by: oscarfelson
1 Replies

10. Shell Programming and Scripting

For loop in bourne shell is not working

I have a loop with cases I am working on Bourne shell for file in *.${Today}*.csv *.${Today}*.txt\ do case ${file} in sun_detail) do something ;; sum) do something ;; mod) do something ;; *) do something ;; (5 Replies)
Discussion started by: digioleg54
5 Replies
shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list. Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)). FILES
/etc/shells lists shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.10 4 Jun 2001 shells(4)
All times are GMT -4. The time now is 08:09 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy