在下面输出的bash脚本中，我需要打印＆＃34; Device＃0＆＃34;之间的行。和＃34;设备＃1＆＃34;，但由于所有这些都是更大的脚本的一部分，我应该使用变量作为开始/停止线。
----------------------------------------------------------------------
Physical Device information
----------------------------------------------------------------------
Device #0
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Programmed Max Speed : SATA 6.0 Gb/s
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,0(0:0)
Reported Location : Connector 0, Device 0
Vendor : ATA
Model :
Firmware : 003Q
Serial number : S2HTNX0H418779
World-wide name : 5002538C402805A4
Reserved Size : 265496 KB
Used Size : 897129 MB
Unused Size : 18327 MB
Total Size : 915715 MB
Write Cache : Enabled (write-back)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full power,Powered off
SSD : Yes
Temperature : 39 C/ 102 F
NCQ status : Enabled
----------------------------------------------------------------
Device Phy Information
----------------------------------------------------------------
Phy #0
PHY Identifier : 0
SAS Address : 30000D1701801803
Attached PHY Identifier : 3
Attached SAS Address : 50000D1701801800
----------------------------------------------------------------
Runtime Error Counters
----------------------------------------------------------------
Hardware Error Count : 0
Medium Error Count : 0
Parity Error Count : 0
Link Failure Count : 0
Aborted Command Count : 0
SMART Warning Count : 0
Model, SSD
----------------------------------------------------------------------
Physical Device information
----------------------------------------------------------------------
Device #1
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Programmed Max Speed : SATA 6.0 Gb/s
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,0(0:0)
Reported Location : Connector 0, Device 0
Vendor : ATA
Model :
Firmware : 003Q
Serial number : S2HTNX0H418779
World-wide name : 5002538C402805A4
Reserved Size : 265496 KB
Used Size : 897129 MB
Unused Size : 18327 MB
Total Size : 915715 MB
Write Cache : Enabled (write-back)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full power,Powered off
SSD : Yes
Temperature : 39 C/ 102 F
NCQ status : Enabled
----------------------------------------------------------------
Device Phy Information
----------------------------------------------------------------
Phy #0
PHY Identifier : 0
SAS Address : 30000D1701801803
Attached PHY Identifier : 3
Attached SAS Address : 50000D1701801800
----------------------------------------------------------------
Runtime Error Counters
----------------------------------------------------------------
Hardware Error Count : 0
Medium Error Count : 0
Parity Error Count : 0
Link Failure Count : 0
Aborted Command Count : 0
SMART Warning Count : 0
Model, SSD
----------------------------------------------------------------------
Physical Device information
----------------------------------------------------------------------
Device #2
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Programmed Max Speed : SATA 6.0 Gb/s
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,0(0:0)
Reported Location : Connector 0, Device 0
Vendor : ATA
Model :
Firmware : 003Q
Serial number : S2HTNX0H418779
World-wide name : 5002538C402805A4
Reserved Size : 265496 KB
Used Size : 897129 MB
Unused Size : 18327 MB
Total Size : 915715 MB
Write Cache : Enabled (write-back)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full power,Powered off
SSD : Yes
Temperature : 39 C/ 102 F
NCQ status : Enabled
----------------------------------------------------------------
Device Phy Information
----------------------------------------------------------------
Phy #0
PHY Identifier : 0
SAS Address : 30000D1701801803
Attached PHY Identifier : 3
Attached SAS Address : 50000D1701801800
----------------------------------------------------------------
Runtime Error Counters
----------------------------------------------------------------
Hardware Error Count : 0
Medium Error Count : 0
Parity Error Count : 0
Link Failure Count : 0
Aborted Command Count : 0
SMART Warning Count : 0
Model, SSD
在这种情况下，设备＃0到设备＃2的输出是相同的，但它对测试来说并不重要。
因此尝试使用cat arcconf | awk '/Device #0/,/Device #1/'将上面的输出存储在名为arcconf的文件中。但是尝试使用变量而不是0和1根本不起作用：
MIN_INDEX=0
INDEX=1
cat arcconf | awk '/Device #"$MIN_INDEX"/,/Device #"$INDEX"/'
cat arcconf | sed -n -e "/Device #"$INDEX_MIN"$/,/Device #"$INDEX"$/{ /Device #"$INDEX_MIN"$/d; /Device #"$INDEX"$/d; p; }"
它不会显示任何内容。 能帮忙吗？
另外，由于我要多次使用Device to Device行的输出，是否可以将它存储在一些我将来应该使用的新变量中？
谢谢， 瓦伦蒂娜
答案 0 :(得分：0)
Bash变量不会在单引号内展开，这就是第一个命令不起作用的原因。用双引号替换单引号：
cat arcconf | awk "/Device #$MIN_INDEX/,/Device #$INDEX/"
第二个命令应该有效，但它不必要地复杂化。 为了变量，您不需要删除双引号字符串，这样可以正常工作：
cat arcconf | sed -n -e "/Device #$INDEX_MIN$/,/Device #$INDEX$/{ /Device #$INDEX_MIN$/d; /Device #$INDEX$/d; p; }"
事实上这种方式更好，因为现在变量都在双引号字符串中，这是一个好习惯，因为包含空格的不带引号的变量会导致问题。
答案 1 :(得分：0)
您可以通过-v var=val将变量发送到awk：
awk \
-v start="Device #$MIN_INDEX" \
-v end="Device #$MAX_INDEX" \
'$0 ~ end { p=0 }
$0 ~ start { p=1 }
p' arcconf
只需移动p;即可，无论是否包含起点和终点：
$0 ~ end { p=0 }; p; $0 ~ start { p=1 } # Will not include start nor end
$0 ~ end { p=0 }; $0 ~ start { p=1 }; p # Will include start and end
$0 ~ start { p=1 }; p; $0 ~ end { p=0 } # Will include start but not end
$0 ~ end { p=0 }; p; $0 ~ start { p=1 } # Will include end but not start
答案 2 :(得分：0)
您可以尝试以下sed命令 -
#MIN_INDEX=0
#INDEX=1
#sed -n "/Device\ #$MIN_INDEX/,/Device\ #$INDEX/p" kk.txt
并将输出设置为变量 -
#sed -n "/Device\ #$MIN_INDEX/,/Device\ #$INDEX/w output.txt" kk.txt
#var=`cat output.txt`
#echo $var
解释
-n在模式匹配时删除重复项。
w是将输出写入文件output.txt
p是要打印的。我们需要使用转义字符\来搜索空格。