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Top Forums Shell Programming and Scripting delete last line from text file Post 22246 by hcclnoodles on Thursday 30th of May 2002 06:34:00 AM
Old 05-30-2002
delete last line from text file

I have a file with which i must remove the last line of the file (the footer). I know how to copy and redirect with tail -1 etc, but how do i delete it permanentely
 

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GRID-MAPFILE-DELET(8)						  Globus Commands					     GRID-MAPFILE-DELET(8)

NAME
grid-mapfile-delete-entry - Remove entries from a gridmap file SYNOPSIS
grid-mapfile-delete-entry [-help] [-usage] [-version] [-versions] grid-mapfile-delete-entry {-dn DISTINGUISHED-NAME} {-ln LOCAL-NAME...} [[-d] | [-dryrun]] [[-mapfile MAPFILE] | [-f MAPFILE]] DESCRIPTION
The grid-mapfile-delete-entry program deletes mappings from a gridmap file. If both the -dn and -ln> options are specified, grid-mapfile-delete-entry removes entries which meet both criteria (remove entries mapping DISTINGUISHED-NAME to LOCAL-NAME for each LOCAL-NAME specified). If only -dn or -ln is specified all entries for that DISTINGUISHED-NAME or LOCAL-NAME are removed. By default, grid-mapfile-delete-entry will modify the gridmap file named by the GRIDMAP environment variable if present, or the file /etc/grid-security/grid-mapfile if not. This can be changed by the use of the -mapfile or -f command-line options. Prior to modifying a gridmap file, grid-mapfile-delete-entry saves its current contents to a file with the string .old appended to the original file name. The full set of command-line options to grid-mapfile-delete-entry are: -help, -usage Display the command-line options to grid-mapfile-delete-entry. -version, -versions Display the version number of the grid-mapfile-delete-entry command. The second form includes more details. -dn DISTINGUISHED-NAME The X.509 distinguished name to remove from the gridmap file. If the -ln option is not specified, remove all entries for this name; otherwise, remove entries that match both this name and the local name. The name should be in OpenSSL's oneline format. -ln LOCAL-NAME... The POSIX user name to remove from the gridmap file. Include multiple LOCAL-NAME strings after the -ln command-line option to remove multiple names from the gridmap. If the -dn option is not specifeid, remove all entries for these names; otherwise, remove entries that match the DISTINGUISHED-NAME and any of the LOCAL-NAME values. -d, -dryrun Display diagnostics about what would be removed from the gridmap file, but don't actually modify the file. -mapfile MAPFILE, -f MAPFILE Modify the gridmap file named by MAPFILE instead of the default. EXAMPLES
Remove all mappings for a distinguished name: % grid-mapfile-delete-entry "/DC=org/DC=example/DC=grid/CN=Joe User" Modifying /etc/grid-security/grid-mapfile ... Deleting entry: "/DC=org/DC=example/DC=grid/CN=Joe User" juser,juser2 (1) entry deleted Remove the mapping between a distinguished name and a single local username: % grid-mapfile-delete-entry "/DC=org/DC=example/DC=grid/CN=Joe User" -ln juser2 Modifying /etc/grid-security/grid-mapfile ... Current entry: "/DC=org/DC=example/DC=grid/CN=Joe User" juser (1) mapping removed: (juser2), (0) not present and ignored (0) entries deleted ENVIRONMENT VARIABLES
The following environment variables affect the execution of grid-mapfile-delete-entry: GRIDMAP Path to the default gridmap to modify. FILES
The following files affect the execution of grid-mapfile-delete-entry: /etc/grid-security/grid-mapfile Path to the default gridmap to modify if GRIDMAP environment variable is not set. SEE ALSO
grid-mapfile-add-entry(8), grid-mapfile-check-consistency(8) AUTHOR
University of Chicago Globus Toolkit 5.0.1 03/19/2010 GRID-MAPFILE-DELET(8)
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