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Annotation of 43BSDTahoe/new/help/src/f77/disk_space, revision 1.1

1.1     ! root        1: .TI F77/DISK_SPACE "Sep. 4, 1985"
        !             2: Minimizing Use of Disk Space
        !             3: 
        !             4: You can save disk space by removing object ('.o') files, and
        !             5: executable modules ('a.out' files), and core dumps ('core' files)
        !             6: when they will no longer be used.
        !             7: 
        !             8: You can use the 'find' command to delete all core dumps in your
        !             9: account:
        !            10: 
        !            11:        find ~ -name core -exec /bin/rm {} \\;
        !            12: 
        !            13: Find can also be used to remove all '.o' files
        !            14: not accessed in the last week:
        !            15: 
        !            16:        find ~ -name '*.o' -atime +7 -exec /bin/rm {} \\;
        !            17: 
        !            18: In the following, it looks for modules and then removes them
        !            19: only if you say 'y' in response to a query:
        !            20: 
        !            21:        find ~ -name '*.out' -atime +7 -exec /bin/rm -i {} \\;
        !            22: 
        !            23: Change ``~'' to ``.'' to look only in the current directory
        !            24: and its subdirectories.
        !            25: See "man 1 find" for more information on 'find'.
        !            26: 
        !            27: If you don't use the debugger, then there is no point in ever saving
        !            28: core dumps in files; to prevent this, add:
        !            29: 
        !            30:        limit coredumpsize 0
        !            31: 
        !            32: in your .login file.  F77 does not produce dumps unless you use
        !            33: the '-g' flag, so this mainly eliminates dumps from other programs
        !            34: and utilites.
        !            35: If you do execute this, then you must execute:
        !            36: 
        !            37:        unlimit coredumpsize
        !            38: 
        !            39: if you want a dump with f77.
        !            40: 
        !            41: You can reduce the size of modules by stripping them:
        !            42: 
        !            43:        strip a.out
        !            44: 
        !            45: This typically saves 20-40% of the file size.  Use the strip command
        !            46: only on executable modules (a.out files), not on object ('.o') files.
        !            47: You can not use the debugger after stripping a module.
        !            48: 
        !            49: It is possible with other commands to strip local symbols from '.o' files;
        !            50: this is worthwhile mainly for libraries.
        !            51: See "help f77 biglibs" for details.
        !            52: 
        !            53: 
        !            54: Put temporary files in the directory /tmp.  E.g.:
        !            55: 
        !            56:        a.out > /tmp/myoutput
        !            57: 
        !            58: Although files in /tmp may disappear at any time, they usually last
        !            59: through the day.
        !            60: If you use /tmp, then your temporary files will disappear even if
        !            61: you forget about them.
        !            62: 
        !            63: The following commands will strip off the sequence field (cols 73-80)
        !            64: and any trailing blanks from all the .f files in a directory:
        !            65: 
        !            66: .nf
        !            67:        foreach i ( *.f )
        !            68:          colrm 73 < $i   |    sed -e 's/  *$//' > tmp
        !            69:          /bin/mv tmp $i
        !            70:        end
        !            71: .fi
        !            72: 
        !            73: Note there are two blanks before the asterisk in the sed command.
        !            74: 
        !            75: In rare circumstances, when tabs are used before the statement
        !            76: body field and the line contains part of a Hollerith, stripping
        !            77: trailing blanks is unsafe.  See "help f77 source" for an example.

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