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.TH BASENAME 1 "Mar 18, 1997"
.SH NAME
basename, dirname \- deliver portions of path names
.SH SYNOPSIS
.LP
.nf
\fB/usr/bin/basename\fR \fIstring\fR [\fIsuffix\fR]
.fi

.LP
.nf
\fB/usr/xpg4/bin/basename\fR \fIstring\fR [\fIsuffix\fR]
.fi

.LP
.nf
\fBdirname\fR \fIstring\fR
.fi

.SH DESCRIPTION
.sp
.LP
The \fBbasename\fR utility deletes any prefix ending in \fB/\fR and the
\fIsuffix\fR (if present in \fIstring\fR) from \fIstring\fR, and prints the
result on the standard output. It is normally used inside substitution marks
(\fB`\|`\fR) within shell procedures.
.SS "/usr/bin"
.sp
.LP
The \fIsuffix\fR is a pattern defined on the \fBexpr\fR(1) manual page.
.SS "/usr/xpg4/bin"
.sp
.LP
The \fIsuffix\fR is a string with no special significance attached to  any of
the characters it contains.
.sp
.LP
The \fBdirname\fR utility delivers all but the last level of the path name in
\fIstring\fR.
.SH EXAMPLES
.LP
\fBExample 1 \fRSetting environment variables
.sp
.LP
The following example, invoked with the argument \fB/home/sms/personal/mail\fR
sets the environment variable \fBNAME\fR to the file named \fBmail\fR and the
environment variable \fBMYMAILPATH\fR to the string  \fB/home/sms/personal\fR:

.sp
.in +2
.nf
example% \fBNAME=`basename \|$HOME/personal/mail`\fR
example% \fBMYMAILPATH=`dirname \|$HOME/personal/mail`\fR
.fi
.in -2
.sp

.LP
\fBExample 2 \fRCompiling a file and moving the output
.sp
.LP
This shell procedure, invoked with the argument \fB/usr/src/bin/cat.c\fR,
compiles the named file and moves the output to \fBcat\fR in the current
directory:

.sp
.in +2
.nf
example% \fBcc $1\fR
example% \fBmv a.out `basename $1 .c`\fR
.fi
.in -2
.sp

.SH ENVIRONMENT VARIABLES
.sp
.LP
See \fBenviron\fR(5) for descriptions of the following environment variables
that affect  the execution of \fBbasename\fR and \fBdirname\fR: \fBLANG\fR,
\fBLC_ALL\fR, \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, and \fBNLSPATH\fR.
.SH EXIT STATUS
.sp
.LP
The following exit values are returned:
.sp
.ne 2
.na
\fB\fB0\fR\fR
.ad
.RS 6n
Successful completion.
.RE

.sp
.ne 2
.na
\fB\fB>0\fR\fR
.ad
.RS 6n
An error occurred.
.RE

.SH SEE ALSO
.sp
.LP
\fBexpr\fR(1), \fBbasename\fR(3C), \fBattributes\fR(5), \fBenviron\fR(5),
\fBstandards\fR(5)