Linux command detailed document and directory management file lookup and comparison

1. File Search

1.1 Strings Command

-------to find printable strings in an object file or binary file. The string is any sequence of 4 or more printable, ending with a newline or a null character. The strings command is useful for identifying random object files.

"Syntax":

Strings  [-a|-|--all] [-f|--print-file-name] [-O] [--help] [-v|--version] [-t bfdname |--target=bfdname]
[-N Min-len|-min-len|--bytes=min-len] [-t {O,x,d}[--target=bfdname] |--radix={o,x,d}] File

"Options":

-a|--all: Scans the entire file instead of only the target file initialization and loading segments

-f|--print-file-name: Displays the file name before displaying the string

-t {O,x,d}[--target=bfdname] |--radix={o,x,d}: The position of the output character, based on octal, decimal, hexadecimal

-O: similar to--radix=o;

-: Set the minimum number of characters displayed, default is 4 characters

-N Min-len|-min-len|--bytes=min-len: Finds and outputs all NUL terminator sequences

--HELP: Options for output Strings command

Version number of the-v|--version:strings command

-T Bfdname | --target=bfdname: Specifying binary file formats

Instance　　

Find the string containing libc in LS, case-insensitive

[Email protected]:~$ strings/bin/ls|grep-i libclibc.so.6__libc_start_mainglibc_2. -glibc_2.4glibc_2. -glibc_2.3.4glibc_2.2.5glibc_2.3

Look at the effect of the-f option on the above basis:[email protected]-thinkpad-t450:~$ strings-f/bin/ls|grep-I libc/bin/ls: libc.so.6/bin/ls: __libc_start_main/bin/ls: glibc_2. -/bin/ls: glibc_2.4/bin/ls: glibc_2. -/bin/ls: glibc_2.3.4/bin/ls: glibc_2.2.5/bin/ls: glibc_2.3

Linux command detailed document and directory management file lookup and comparison