REVPATH(1) General Commands Manual REVPATH(1)NAME
revpath - generate a relative path that can be used to undo a change-directory
SYNOPSIS
revpath path
DESCRIPTION
The revpath program prints out a relative path that is the ``reverse'' or ``inverse'' of path. Start with two directories top and bottom,
with the latter below the former, and path is the location of bottom relative to top. The output of revpath is the location of top rela-
tive to bottom. The resulting path contains a trailing `/' character when the result is non-trivial. If path is equivalent to `.', the
resulting output is empty. If path is invalid in some way (e.g., doesn't represent the path to a subdirectory) the output is also empty
and no error messages are ever generated.
DIAGNOSTICS
There are no diagnostics. Error conditions are silently ignored, and the exit status is always 0.
BUGS
It isn't possible to reverse arbitrary relative paths. If any path element between the two end points of path is a symbolic link, the
results will probably be incorrect.
XFree86 Version Version 4.3.0 REVPATH(1)
Check Out this Related Man Page
SHTOOL-PATH.TMP(1) GNU Portable Shell Tool SHTOOL-PATH.TMP(1)NAME
shtool-path - GNU shtool command dealing with shell path variables
SYNOPSIS
shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]
DESCRIPTION
This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments. It
prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.
OPTIONS
The following command line options are available.
-s, --suppress
Supress output. Useful to only test whether a program exists with the help of the return code.
-r, --reverse
Transform a forward path to a subdirectory into a reverse path.
-d, --dirname
Output the directory name of str.
-b, --basename
Output the base name of str.
-m, --magic
Enable advanced magic search for ""perl"" and ""cpp"".
-p, --path path
Search in path. Default is to search in $PATH.
EXAMPLE
# shell script
awk=`shtool path -p "${PATH}:." gawk nawk awk`
perl=`shtool path -m perl`
cpp=`shtool path -m cpp`
revpath=`shtool path -r path/to/subdir`
HISTORY
The GNU shtool path command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
over into GNU shtool.
SEE ALSO shtool(1), which(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-PATH.TMP(1)
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