README.md
This commit is contained in:
parent
d374d09e96
commit
6b77774296
44
README.md
44
README.md
|
@ -1,12 +1,10 @@
|
|||
`packelf` was inspired by [the idea of Klaus D](https://askubuntu.com/a/546305). It is used to pack a ELF program and its dependent libraries into a single executable file.
|
||||
|
||||
|
||||
## usage
|
||||
## Usage (packelf):
|
||||
|
||||
```
|
||||
Usage: ./packelf.sh [-zjJn] <ELF_SRC_PATH> <DST_PATH> [ADDITIONAL_LIBS ...]
|
||||
-zjJ compress flag passed to tar, '-z' by default
|
||||
-n pack without compress
|
||||
Usage: ./packelf.sh <ELF_SRC_PATH> <DST_PATH> [ADDITIONAL_LIBS]
|
||||
```
|
||||
|
||||
First, pack a ELF program. For example, you can pack `ls` like this:
|
||||
|
@ -28,41 +26,17 @@ You can execute the packed program directly:
|
|||
|
||||
However, every time the packed program is executed, an internal unpacking operation is performed automatically, which results in a slower startup of the program.
|
||||
|
||||
If you need to execute the program many times and want to reduce the startup time, you can unpack the program before executing it.
|
||||
## USAGE EXTRA TOOLS:
|
||||
|
||||
```
|
||||
# Run the packed program directly, it takes longer.
|
||||
~ # time bash -c 'for i in {1..100};do /root/ls >/dev/null; done'
|
||||
real 0m4.203s
|
||||
user 0m2.067s
|
||||
sys 0m3.093s
|
||||
|
||||
# You can unpack it first.
|
||||
~ # PACKELF_UNPACK_DIR=/usr/local/bin /root/ls
|
||||
'ls' was unpacked to '/usr/local/bin'.
|
||||
You can run '/usr/local/bin/ls ARGS...' to execute the command.
|
||||
|
||||
# ls and ls.res are generated after unpacking.
|
||||
~ # /usr/local/bin/ls -lh /usr/local/bin/ls*
|
||||
-rwxr-xr-x 1 root root 3.9K May 21 09:00 /usr/local/bin/ls
|
||||
/usr/local/bin/ls.res:
|
||||
total 3.0M
|
||||
-rwxr-xr-x 1 root root 175K May 21 09:00 ld-linux-x86-64.so.2
|
||||
-rwxr-xr-x 1 root root 2.0M May 3 2022 libc.so.6
|
||||
-rw-r--r-- 1 root root 15K May 3 2022 libdl.so.2
|
||||
-rw-r--r-- 1 root root 454K Feb 3 2018 libpcre.so.3
|
||||
-rwxr-xr-x 1 root root 142K May 3 2022 libpthread.so.0
|
||||
-rw-r--r-- 1 root root 152K Mar 1 2018 libselinux.so.1
|
||||
-rwxr-xr-x 1 root root 131K Jan 18 2018 ls
|
||||
|
||||
# Running the unpacked launch script (/usr/local/bin/ls) will take much less time.
|
||||
~ # time bash -c 'for i in {1..100};do /usr/local/bin/ls >/dev/null; done'
|
||||
real 0m0.370s
|
||||
user 0m0.239s
|
||||
sys 0m0.133s
|
||||
Usage: ./packelf-copylibs.sh <ELF_SRC_PATH> <PATH_TO_COPY_LIBRARIES>
|
||||
```
|
||||
|
||||
## dependence
|
||||
```
|
||||
Usage: ./packelf-folder.sh <FOLDER> <FILENAME> <EXECUTABLE_RUN>
|
||||
```
|
||||
|
||||
## Dependencies
|
||||
* sh
|
||||
* tar
|
||||
* sed
|
||||
|
|
Loading…
Reference in New Issue
Block a user