07-04-2019
First off /bin and /sbin may be and often are symbolic links to /usr/bin or /usr/sbin. There are links for library directories as well.
So I am not sure where your confusion arises.
One solution is the realpath() function. It resolves the problem of reading and resolving links. You can use lstat to check if /bin or whatever is a symlink, too. lstat only returns information about links, not regular files or directories.
Read man page on realpath and lstat
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I create a file touch 1201093003 fichcomp
and inside a repertory (which hava a lot of files) I want to list all files created before this file :
find *.* \! -maxdepth 1 - newer fichcomp but this command returned bash: /usr/bin/find: Argument list too long
but i make a filter all... (1 Reply)
Discussion started by: yacsil
1 Replies
2. UNIX for Dummies Questions & Answers
Hi All,
Can somebody tell me the difference between /bin, /usr/bin, /sbin ?
Thanx in advance,
Saneesh Joseph (3 Replies)
Discussion started by: saneeshjose
3 Replies
3. Solaris
root@test09 # ls -al /sbin/init
-r-xr-xr-x 1 root sys 550000 Jun 29 2002 /sbin/init
root@test09 # ls -al /usr/sbin/init
-r-xr-xr-x 1 root sys 37100 Jun 29 2002 /usr/sbin/init (2 Replies)
Discussion started by: userking
2 Replies
4. Red Hat
hi there,
Would you able to advise that why the syntax or statement below couldn't work as expected ?
/usr/bin/find /backup -name "*tar*" -mtime +2 -exec /bin/rm -f {} \; 1> /dev/null 2>&1
In fact, I was initially located it as in crontab job, but it doesn't work at all. So, I was... (9 Replies)
Discussion started by: rauphelhunter
9 Replies
5. Shell Programming and Scripting
Hello,
When i run a bash script on ubuntu i get this message..
#!/bin/bash cannot find file or directory...
Can anibody help me with this, because the file actually exists....
Is there any extra configuration to be made? (5 Replies)
Discussion started by: oliveiraum
5 Replies
6. Programming
I'm trying to compile sudo on RHEL 4.8 and during the make I get the this error. Does anyone know what package I'm missing?
gcc -o sudo sudo_auth.o pam.o mkstemps.o ldap.o exec_pty.o get_pty.o iolog.o audit.o boottime.o check.o env.o exec.o getspwuid.o gettime.o goodpath.o fileops.o find_path.o... (2 Replies)
Discussion started by: woodson2
2 Replies
7. UNIX for Advanced & Expert Users
All of my machines (various open source derivatives on x86 and amd64) store argv above the stack (at a higher memory address). I am curious to learn if any systems store argv below the stack (at a lower memory address).
I am particularly interested in proprietary Unices, such as Solaris, HP-UX,... (9 Replies)
Discussion started by: alister
9 Replies
8. Shell Programming and Scripting
there are two directories A and B
if cmd in in "A/user/bin A/bin A/user/sbin" but not "B/user/bin B/bin B/user/sbin" directory print them (1 Reply)
Discussion started by: yanglei_fage
1 Replies
9. UNIX and Linux Applications
I am installing lxml module for python on redhat
I have installed libxml2 already.
When I run for libxslt:
./configure --prefix=libxslt_folder --with-libxml-prefix=libxml2_folder
It is ok
the I run :
make
I have error:
/usr/bin/ld: cannot find -lz
collect2: ld returned 1 exit status
I... (4 Replies)
Discussion started by: AIX_30
4 Replies
10. UNIX for Dummies Questions & Answers
...... (30 Replies)
Discussion started by: larry burns
30 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)