是否可以查看另一個 shell 的歷史記錄？

我正在一個bash視窗中執行一些我不想中斷甚至暫時暫停的東西。是否可以查看該特定視窗會話的命令歷史記錄？我有多個視窗打開，所以查看.bash_history不會有太大幫助。

不，bash不支持。歷史記錄保存在記憶體中，在使用或保存到.bash_history同一會話之前，其他程序無法使用。但是，一旦將其寫入文件系統，命令源自哪個會話的資訊就會失去。history -a``history -w

您可以獲得的最接近的方法是使用一些行.bashrc來讓bash執行後直接附加每個命令：https
://unix.stackexchange.com/a/1292/147970 然後您可以在.bash_history.

要訪問特定會話的歷史記錄，您需要使案例如中斷該會話中的前台程序Ctrl+Z。

以下是如何使用gdb（您需要使用管理權限執行它），通過https://stackoverflow.com/questions/7272558/can-we-define-a-new-data-type-in​​-a -gdb-會話：

準備：

echo 'typedef void * histdata_t;
typedef struct _hist_entry {
 char *line;
 char *timestamp;
 histdata_t data;
} HIST_ENTRY;
typedef struct _hist_state {
 HIST_ENTRY **entries;
 int offset;
 int length;
 int size;
 int flags;
} HISTORY_STATE;
HIST_ENTRY _sampleentry;
HISTORY_STATE _samplestate;
' | tee sample.c
# get sample.o
gcc -g -c sample.c

# get bash pid, maybe via `pgrep bash`, or `pidof bash`, etc
# say in this example, it is 16573

執行測試命令：

$ sudo gdb -p 16573 -ex "set confirm off" -ex "add-symbol-file sample.o 0" -ex 'printf "ptype HIST_ENTRY\n"' -ex "ptype HIST_ENTRY" -ex 'printf "p *(HISTORY_STATE*)history_get_history_state()\n"' -ex 'p *(HISTORY_STATE*)history_get_history_state()' -ex 'set $myoffs = (*(HISTORY_STATE*)history_get_history_state())->offset' -ex 'printf "myoffs %d\n", $myoffs' -ex 'printf "p *(HIST_ENTRY *)history_get($myoffs)\n"' -ex 'p *(HIST_ENTRY *)history_get($myoffs)'
....
0x00007fb053abb0e9 in __pselect (nfds=1, readfds=0x7ffe81a009b0, writefds=0x0, exceptfds=0x0, 
   timeout=<optimized out>, sigmask=0x7ffe81a00930) at ../sysdeps/unix/sysv/linux/pselect.c:69
69  ../sysdeps/unix/sysv/linux/pselect.c: No such file or directory.
add symbol table from file "sample.o" at
   .text_addr = 0x0
Reading symbols from sample.o...done.
ptype HIST_ENTRY
type = struct _hist_entry {
   char *line;
   char *timestamp;
   histdata_t data;
}
p *(HISTORY_STATE*)history_get_history_state()
$1 = {entries = 0x55ed117f4ab0, offset = 155, length = 155, size = 502, flags = 1}
myoffs 155
p *(HIST_ENTRY *)history_get($myoffs)
$2 = {line = 0x55ed119684d0 "kill -STOP $$", timestamp = 0x55ed119709a0 "#1545016332", data = 0x0}

準備 gdb“擷取最後的歷史條目”命令：

echo '
set verbose off
set complaints 0
set trace-commands off
add-symbol-file sample.o 0
set $myoffs = ((HISTORY_STATE*)history_get_history_state())->offset
set $line = ((HIST_ENTRY *)history_get($myoffs))->line
printf "%s\n", $line
' | tee gdbscript

執行 gdb“擷取最後一個歷史條目”命令：

sudo gdb -p 16573 -batch -x gdbscript 2>/dev/null | tail -1
kill -STOP $$

引用自：https://unix.stackexchange.com/questions/341534