Yes - and No: the maximum number of passed arguments will not apply but the maximum line length will. Suppose you have a line like:
Code:
for x in * [; do ....]
and you execute that in a directory with really many files, it will first be expanded by the shell to:
Code:
for x in fileA fileB fileC [...]
and if the really many filenames make this line too long for the shells input parser to fathom you will be in deep kimchi.
Yes, the shell expands the wild card, but it does not somehow pass the expanded result as an input line to itself, it does not pass anything. It would only do that if it would pass it to another process, but it does not do that here.
Quote:
I give you that: some shells don't care for system constants like "LINE_MAX", but as far as i know a POSIXly correct utility has only to be able to digest lines up to that length. Above that all bets are off. So, if you want to stay on the safe side you better do not require something that is optional in the standards.
From /usr/include/sys/limits.h on a rather up-to-date AIX 7.1-system:
Code:
[..]
#define _POSIX2_LINE_MAX 2048 /* max len of utility input line */
[..]
[..]
A for loop is not a utility! It is part of the shell syntax, it is not even a builtin utility. So LINE_MAX does not play a role either!
The script below was written to select files and convert a particular string to something other and replace that file. However, I came across some issues with filenames that contain spaces, any suggestions to get around this? Any other suggestions that may apply to this code would also be... (5 Replies)
Hi Unix Guru's,
I have encountered a strange problem with doing a restore on a local sunu machine.
We have 2 live system (v880, v450) and 1 test system v440.
All the machines are sun4u and using sun os 8.0
We have 2 backup device. One Bcakup device connected with v880 and another backup... (0 Replies)
Hi,
What's the best way to find all files under a directory - including ones with space - in order to apply a command to each of them. For instance I want get a list of files under a directory and generate a checksum for each file.
Here's the csh script:
#!/bin/csh
set files = `find $1... (5 Replies)
Hi Gurus,
I have a requirement.
cat /usdd/Sample/"NDDF Plus DB"/"NDDF Descriptive and Pricing"/"NDDF BASICS 3.0"/"Pricing"/1.txt |
sed 's/*|*/|/g' |
sed 's/^*//'|
sed 's/^*//;
s/*$//' > temp.txt
In unix prompt the above command is reading the file 1.txt and I am... (1 Reply)
Hi,
I did the following script:
DIR=`pwd`;for i in `find . -name GESTION -type d`;do cd $i/..;setfacl -R -m g:directores:rwx,
GESTION;echo $DIR'/'$i;cd $DIR;done
This code do the following actions:
1. Starting inside a folder, it's searching for any folder called "GESTION"
2. Every time... (3 Replies)
Hi,
I have an issue with switching to other directory through shell script. I have used
cd /Music"
but that doesn't help me. Then I have also tried using
alias proj 'Music'
alias
then I get the error permission denied but i set the chmod 777 Music. I am using cShell for my... (3 Replies)
how can i make find/sed to include directory names with spaces
the command is like this
for i in `find wp-content/themes -type f -print0 | xargs -0 grep -l
-iE 'e'`;do sed -i -e 's/word1/word2/gI' "$i";done
but it skips one directory names with spaces
sed: can't read ./Nova: No such... (5 Replies)
I am writing a shell script to cd to a folder.
folder name is "October Scripts"
I am currently storing the name of folder in a shell variable as so path="October\ Scripts/".
If I do cd $path I receive the error bash: cd: October\: No such file or directory
What am I doing wrong?
Kindly... (3 Replies)
I'm making a shell script to:
-copy directories to a new location
-perform conversions on the files within the copied directories
-move the newly created files to a new directory
Please see my super basic script and notes below... and thank you thank you thank you in advance !!
... (1 Reply)
Discussion started by: kayzee
1 Replies
LEARN ABOUT OPENSOLARIS
shells
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/ksh93, /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/ksh93, /usr/bin/pfcsh,
/usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.
Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).
FILES
/etc/shells list of shells on system
SEE ALSO vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)SunOS 5.11 20 Nov 2007 shells(4)