Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

strcompact(1) [bsd man page]

strcompact(1)						      General Commands Manual						     strcompact(1)

NAME
strcompact - string compaction for object files SYNOPSIS
strcompact [ object_name ... ] DESCRIPTION
strcompact scans the symbol and string tables of an object file looking for multiple references in the symbol table to the same string. The string offset of symbol table entries is updated to preserve only one copy of the string. strcompact cut the size of the kernel string table by about 25%. The user must have write permission to the object/executable file. strcompact writes to stderr the number of shared strings found. strcompact exits 0 if successful, and >0 if an error occurred. SEE ALSO
sort(1), symcompact(1), symorder(1), uniq(1) BUGS
Execution speed leaves much to be desired - on a 11/73 it takes about 4 minutes to process the string table of the kernel. Fortunately this is only done once when the kernel is created. Although strcompact may be run on .o files as well as executables but this is probably not worth the trouble since the linker will not cre- ate shared strings in the final executable. 3rd Berkeley Distribution January 25, 1994 strcompact(1)

Check Out this Related Man Page

ostrip(1)						      General Commands Manual							 ostrip(1)

NAME
ostrip - Reduce the size of object files SYNOPSIS
ostrip [options] file... OPTIONS
The following options are supported by the ostrip command: Removes the section of a linked image. Removes unreferenced symbols and unused type information from the symbol tables of a pre-link file. This results in a smaller on-disk executable file. If files modified with this option are subsequently linked, ostrip -m should be run on the linked image. Joins together two files that were previously split by the -t option into a symbol table file (image.stb) and a stripped image file (image). Removes unreferenced symbols and unused type information for the symbol tables of a post-link executable file. This results in a smaller on-disk executable file. The symbol table still contains all information required for debugging. Decompresses the output of ostrip. This option is provided for cases in which the input file is compressed in ALPHAMAGICZ format. Removes the symbol table and any strippable subsections of the section. (Performs the same operations as the strip command.) Splits an image file (image) into a symbol table file (image.stb) and a stripped image file (image). The symbol table file will contain a checksum of the stripped image. Displays the version of the ostrip command. Produces a reduced symbol table by remov- ing local information. Also deletes any locally strippable subsections of the section. (Performs the same operations as the ld -x com- mand.) Compresses the output of ostrip into ALPHAMAGICZ format. DESCRIPTION
The ostrip command reduces the components of any object file based on the options that are specified. It is designed to work with any object file, that is, files, image files, and shared object files. It does not work with (archive) files. RESTRICTIONS
None. EXAMPLES
The following command strips the local symbol table and converts the object file into ALPHAMAGICZ format: ostrip -x -Z obj.o The following command produces the symbol table file osize_mm.stb and the stripped image file osize.mm: ostrip -t osize.mm The following command joins the symbol table file osize_mm.stb to osize.mm: ostrip -j osize.mm SEE ALSO
Commands: strip(1), ld(1), mcs(1), objZ(1) ostrip(1)
Man Page

8 More Discussions You Might Find Interesting

1. Programming

function call in executable

Hi, I want to write a program in C or in Perl which will tell me that a function is called in which executables. I tried to use the unix command like 'nm', 'strings' and so on to find out whether a function is called in that executable or not but could not able to find a clue. The whole... (1 Reply)
Discussion started by: rocky_74
1 Replies

2. Programming

shared object "undefined symbol: fstat" error

Didn't have this problem in AIX, but ported to Linux with GCC compiler and am now getting a runtime error: tssutil: symbol lookup error: /work/agility/devel/bin/libagam.so: undefined symbol: fstat I'm sure most of you know that fstat is an intrinsic function just like printf, memcpy, etc. When I... (5 Replies)
Discussion started by: marcus121
5 Replies

3. Filesystems, Disks and Memory

Inode number

as kernel keeps track of user activities on a file by its INODE number and I node table . what is the structure of Inode table. and where does this Inode table mapped into?user space or kernel space? is the Inode Number is fixed for a file till its deletion? thanks (1 Reply)
Discussion started by: compbug
1 Replies

4. Programming

Listing function exports from object file

Is it possible to view all the functions exported by a given object file? "dump -tv" comes the closest, but what exactly am I looking for to determine whether the symbol exists in the object file? Essentially, I have a library that requires a call to "xdr_sizeof" and the compile is failing... (5 Replies)
Discussion started by: DreamWarrior
5 Replies

5. UNIX for Dummies Questions & Answers

Problem: Run schedular to copy from one table to other

Check if records of table B are 1 month old. if yes then Truncate table B_SNAPSHOT and then copy data from B to SNAPSHOT_B table otherwise no need to copy. Run a schedular after every 15 minutes. The tables B and SNAPSHOT_B has the below structure(same for both): PROCESS_NAME MQ_NAME... (0 Replies)
Discussion started by: nehagupta2008
0 Replies

6. Programming

determining the object files...

hello, is there a utility to determine which object files are used to create a binary executable file?let me explain, please: for ex. there are three files: a.o b.o c.o and these files are used to create a binary called: prg namely, a.o b.o c.o -> prg so, how can i determine these three... (1 Reply)
Discussion started by: xyzt
1 Replies

7. UNIX for Dummies Questions & Answers

XOR two strings

hi, i am new to shell programming, can u please tell me how to perform XOr operation of two strings. i tried to do xor using ^symbol but this doesnt work. help me with this Thanks (12 Replies)
Discussion started by: anil_uvce
12 Replies

8. UNIX for Dummies Questions & Answers

Take 100MB worth files from 200,000 Files

Hi, I have a process which creates almost 200K files. Each file ranging from 1kb to 5kb. This is almost 2GB of data in all files. I have a requirement where the business needs only 100MB worth of files. Is there a way to get files around 100MB (doesn't have to be exactly 100MB) from all the... (2 Replies)
Discussion started by: grep_me
2 Replies