Linux shell kill命令基於輸出仍然運行

Question

我在Code :: Blocks中有一組C++項目和一個構建所有這些項目的腳本。該腳本看起來如下：

codeblocks --build --target="release32" project1.cbp 
codeblocks --build --target="release32" project2.cbp 
codeblocks --build --target="release32" project3.cbp 
... 

有時候建設項目之一時，代碼:: Blocks的失敗與錯誤完成該過程：*** glibc detected *** codeblocks: corrupted double-linked list。這有沒有關係正在失敗的構建，這僅僅是在代碼塊中的錯誤，在這裏看到： https://bugs.launchpad.net/ubuntu/+source/codeblocks/+bug/764728 或在這裏： http://forums.codeblocks.org/index.php?topic=16883.0

，我想做一個解決方法是解析命令而輸出它仍在運行，找到字符串「codeblocks：損壞的雙鏈表」，並殺死代碼塊讓腳本構建其他項目並完成。

我該怎麼做？

Answer 1

有點哈克，但會爲你工作（bash）？

這僅僅是模擬二進制代碼塊（./codeblocks）：

$ cat codeblocks 
#!/bin/bash 

num=$RANDOM 
((num %= 2)) 

case "$num" in 
     0) 
       echo "codeblocks finished successfully: $*" 
       exit 0 
       ;; 
     1) 
       echo "*** glibc detected *** codeblocks: corrupted double-linked list" 1>&2 
       while true; do 
         sleep 1 
       done 
       ;; 
esac 

這是實際的測試腳本（test.sh）：

$ cat test.sh 
#!/bin/bash 

run_codeblocks() 
{ 
     until (
       subshell_pid=$BASHPID 
       echo "trying to run 'codeblocks $*'" 
       ./codeblocks "$@" 2>&1 | while read line; do 
         echo "[${line}]" 
         [[ ${line} == *"*** glibc detected ***"* ]] && kill $subshell_pid 
       done 
       return 0 
     ); do 
       : 
     done 
} 

echo "running codeblocks ..." 
run_codeblocks 1 
run_codeblocks 2 
run_codeblocks 3 
echo "... done" 

您纏繞調用codeblocks在子shell， grep它的輸出，如果一行符合你聲明的錯誤會殺死子shell。基本上正是你所描述的。

$ ./test.sh 
running codeblocks ... 
trying to run 'codeblocks 1' 
[codeblocks finished successfully: 1] 
trying to run 'codeblocks 2' 
[*** glibc detected *** codeblocks: corrupted double-linked list] 
./test.sh: line 4: 29889 Terminated    (subshell_pid=$BASHPID; echo "trying to run 'codeblocks $*'"; ./codeblocks "$@" 2>&1 | while read line; do 
    echo "[${line}]"; [[ ${line} == *"*** glibc detected ***"* ]] && kill $subshell_pid; return 0; 
done) 
trying to run 'codeblocks 2' 
[*** glibc detected *** codeblocks: corrupted double-linked list] 
./test.sh: line 4: 29892 Terminated    (subshell_pid=$BASHPID; echo "trying to run 'codeblocks $*'"; ./codeblocks "$@" 2>&1 | while read line; do 
    echo "[${line}]"; [[ ${line} == *"*** glibc detected ***"* ]] && kill $subshell_pid; return 0; 
done) 
trying to run 'codeblocks 2' 
[codeblocks finished successfully: 2] 
trying to run 'codeblocks 3' 
[*** glibc detected *** codeblocks: corrupted double-linked list] 
./test.sh: line 4: 29903 Terminated    (subshell_pid=$BASHPID; echo "trying to run 'codeblocks $*'"; ./codeblocks "$@" 2>&1 | while read line; do 
    echo "[${line}]"; [[ ${line} == *"*** glibc detected ***"* ]] && kill $subshell_pid; return 0; 
done) 
trying to run 'codeblocks 3' 
[codeblocks finished successfully: 3] 
... done