嗨,我有这个文本文件。
Physical interface: ge-0/0/3, Enabled, Physical link is Up
Interface index: 132, SNMP ifIndex: 504
Description: # SURVEILLANCE CAMERA #
Link-level type: Flexible-Ethernet, Media type: Copper, MTU: 9000,
LAN-PHY mode, Link-mode: Full-duplex, Speed: 1000mbps, BPDU Error: None,
.....few more lines
Physical interface: ge-0/1/0, Enabled, Physical link is Down
Interface index: 133, SNMP ifIndex: 505
Link-level type: Ethernet, Media type: Fiber, MTU: 1514, LAN-PHY mode,
Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None,
.....few more lines
Physical interface: ge-0/1/3, Enabled, Physical link is Up
Interface index: 136, SNMP ifIndex: 508
Description: # TO CSS_I-TN-CHNN-ENB-I099 #
Link-level type: Flexible-Ethernet, Media type: Fiber, MTU: 8000,
LAN-PHY mode, Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None,
... few more lines
and so on....
现在,如果物理链接是Up&MTU的值是9000,那么只有我需要将两条对应的线路都替换为.
<Pass>Physical interface: ge-0/0/3, Enabled, Physical link is Up
&
<Pass>Link-level type: Flexible-Ethernet, Media type: Fiber, MTU: 9000,
在所有其他情况下,它将是<Fail>
而不是<Pass>
。这些值是不同的,这就是为什么我没有任何使用sed或其他任何东西的想法。。请帮忙。。。这是预期的输出。。
<Pass>Physical interface: ge-0/0/3, Enabled, Physical link is Up
Interface index: 132, SNMP ifIndex: 504
Description: # SURVEILLANCE CAMERA #
<Pass>Link-level type: Flexible-Ethernet, Media type: Copper, MTU: 9000,
LAN-PHY mode, Link-mode: Full-duplex, Speed: 1000mbps, BPDU Error: None,
.....few more lines
<Fail>Physical interface: ge-0/1/0, Enabled, Physical link is Down
Interface index: 133, SNMP ifIndex: 505
<Fail>Link-level type: Ethernet, Media type: Fiber, MTU: 1514, LAN-PHY mode,
Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None,
.....few more lines
<Fail>Physical interface: ge-0/1/3, Enabled, Physical link is Up
Interface index: 136, SNMP ifIndex: 508
Description: # TO CSS_I-TN-CHNN-ENB-I099 #
<Fail>Link-level type: Flexible-Ethernet, Media type: Fiber, MTU: 8000,
LAN-PHY mode, Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None,
... few more lines
and so on....
使用sed:
sed '/Physical link is/ { :a /MTU:/! { N; ba; }; /Physical link is Up.*MTU: 9000/ { s/(.*n)s*/<Pass>1<Pass>/; b; }; s/(.*n)s*/<Fail>1<Fail>/; }' filename
即:
/Physical link is/ { # Block start found
:a
/MTU:/! { # fetch lines until we find the MTU
N
ba
}
/Physical link is Up.*MTU: 9000/ { # If link is up and MTU 9000
s/(.*n)[[:space:]]*/<Pass>1<Pass>/ # insert Pass markers
b
# we're done.
}
s/(.*n)[[:space:]]*/<Fail>1<Fail>/ # otherwise insert Fail markers
}
请注意,对于BSD-sed,由于b
指令的原因,它不能用作一行代码。在这种情况下,将扩展的(没有注释,因为BSD-sed很容易混淆)代码放在一个文件中,比如foo.sed
,然后使用sed -f foo.sed filename
。我已经用它的POSIX等价物([[:space:]]
)替换了另一个GNU主义(s
)。
要保持MTU行开头的空白,请删除s
或[[:space:]]
。要在结果标记之前放置空白,请将s
或[[:space:]]
放在捕获组(即(.*ns*)
)内。
另请注意:这假设每个接口描述都有一个MTU字段。
或者,你可以试试这个awk脚本:
awk -v RS='Physical interface:' -F 'n' -v OFS='n' '{ result = "<Fail>" } /Physical link is Up/ && /MTU: 9000/ { result = "<Pass>" } NR != 1 { for(i = 1; i <= NF; ++i) { if(index($i, "MTU:")) { sub(/^ */, result, $i) } } print result RS $0 }' filename
这将在Physical interface:
处将文件拆分为记录,并在换行处将记录拆分为字段。然后:
{ result = "<Fail>" } # result is Fail
/Physical link is Up/ && /MTU: 9000/ { # unless link is up and MTU 9000
result = "<Pass>"
}
NR != 1 { # the first record is the empty string
# before the first actual record, so
# we remove it.
for(i = 1; i <= NF; ++i) { # wade through the fields (lines)
if(index($i, "MTU:")) { # find the MTU line
sub(/^ */, result, $i) # put the marker there. To keep the
# whitespace, use $i = result $i
# instead, or sub(/^ */, "&" result, $i)
# to keep the spaces before the marker.
}
}
print result RS $0 # once done, print the whole shebang.
# We have to reinsert the record
# separator because it was removed
# by the splitting.
}
注意,多字符RS
不是严格符合POSIX的。不过,最常见的awk(gawk和mawk)支持它。值得注意的是,BSD awk没有。
尝试以下awk
命令,该命令应符合POSIX并保留前导空格:
awk '
/ Physical link is / { ++count }
/, MTU: / {
tag = (blockLines[1] ~ /Up$/ && $0 ~ /, MTU: 9000,/ ? "<Pass>" : "<Fail>")
sub(/^/, "&" tag, blockLines[1])
sub(/^ +/, "&" tag)
for (i = 1; i < count; ++i) print blockLines[i]
count = 0
}
count > 0 { blockLines[count++] = $0; next }
{ print }
' file
基本思想是:
- 在一个数组中收集一个行块(包括必须标记的两行之间的所有行),而不打印它们
- 到达块的末尾时,确定必须使用的标记(失败或通过)
- 打印块中的所有行,并相应地标记第一行和最后一行
仅限Awk脚本的注释版本:
/ Physical link is / { ++count } # Start of block
/, MTU: / { # End of block - fail/pass can now be determined
# Determine whether to apply a fail or a pass tag based on the
# first and last line in the block.
tag = (blockLines[1] ~ /Up$/ && $0 ~ /, MTU: 9000,/ ? "<Pass>" : "<Fail>")
# Prepend tag to 1st line in block
sub(/^/, "&" tag, blockLines[1])
# Prepend tag to last line in block, preserving leading whitespace.
sub(/^ +/, "&" tag)
# Print all lines in block (except for last one).
for (i = 1; i < count; ++i) print blockLines[i]
# Reset block line counter.
count = 0
}
# Inside block: collect lines, do not print yet.
count > 0 { blockLines[count++] = $0; next }
# Print last line in block and lines outside of blocks.
{ print }