DRELN(1) mpiFileUtils DRELN(1) NAME dreln - distributed relink SYNOPSIS dreln [OPTION] OLDPATH NEWPATH PATH ... DESCRIPTION Parallel MPI application to recursively update symlinks within a directory. dreln walks the specified PATH and updates any symlink whose target in- cludes an absolute path to OLDPATH and replaces that symlink with a new link whose target points to NEWPATH instead. This is useful to update symlinks after migrating a large directory from one file system to another, whose links specify absolute paths to the orig- inal file system. OPTIONS -i, --input FILE Read source list from FILE. FILE must be generated by another tool from the mpiFileUtils suite. -p, --preserve Preserve existing modification times on links. -r, --relative Replace links using target paths that are relative to NEWPATH. --progress N Print progress message to stdout approximately every N seconds. The number of seconds must be a non-negative integer. A value of 0 dis- ables progress messages. -v, --verbose Run in verbose mode. -q, --quiet Run tool silently. No output is printed. -h, --help Print a brief message listing the drm(1) options and usage. EXAMPLES 1. To update all links under /walk/path whose targets point to /orig/path and replace them with targets that point to /new/path: mpirun -np 128 dreln -v /orig/path /new/path /walk/path 2. Same as above, but replace each link target with a relative path from the link to its new target under /new/path: mpirun -np 128 dreln -v --relative /orig/path /new/path /walk/path 3. One can preserve existing modification times on links: mpirun -np 128 dreln -v --preserve /orig/path /new/path /walk/path 4. One can specifiy multiple paths to walk: mpirun -np 128 dreln -v /orig/path /new/path /walk/path1 /walk/path2 SEE ALSO The mpiFileUtils source code and all documentation may be downloaded from <https://github.com/hpc/mpifileutils> AUTHOR HPC COPYRIGHT 2022, LLNL/LANL/UT-Battelle/DDN 0.12 Jan 29, 2025 DRELN(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | AUTHOR | COPYRIGHT
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