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Full Discussion: absolute path
Top Forums Programming absolute path Post 302120318 by Perderabo on Tuesday 5th of June 2007 05:18:48 PM
Old 06-05-2007
If you are in, ahem, /directoryb (sorry, but I hate calling directories "folders"), you can call getcwd() to obtain "/directoryb". Since "../directorya/filea" does not start with a /, it must be a relative path. So prepend your current directory to it to get "/directoryb/../directorya/filea" which is an absolute path to the file in question. You could parse this to remove "/.." and the word preceding "/.." if you really need to simplify the path. But no matter what you do, it is possible for files to have multiple absolute paths that do not involve ".." due to symbolic links and loopback mounts.
 

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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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