sed如何做這個(gè)題

__lxmxn__

file1內(nèi)容:

[file]
path = /var/lib/mysql
comment = mysql server

[file]
path = /var/named
comment = bind data directory

file2內(nèi)容：

###
### here is a section
###

sed如何將file1編輯成如下?

###
### here is a section
###
[file]
path = /var/lib/mysql
comment = mysql server

###
### here is a section
###
[file]
path = /var/named
comment = bind data directory

yinyuemi

$ sed '/file/ {r file2
d}
/path/i\
[file] ' file1
###
### here is a section
###
[file]
path = /var/lib/mysql
comment = mysql server

###
### here is a section
###
[file]
path = /var/named
comment = bind data directory

__lxmxn__

呵呵，不夠靈活

如果path是變化的，或者有多個(gè)path就不成了

yinyuemi

$ awk 'NR==FNR{a["[file]"]=$0"\n"a["[file]"] }NR>FNR{print a[$0]?a[$0]"\n"$00}' file2 file1
###
### here is a section
###

[file]
path = /var/lib/mysql
comment = mysql server

###
### here is a section
###

[file]
path = /var/named
comment = bind data directory

zzy7186

tac file2 | sed '/^\[file\]$/r file1' | tac

yinyuemi

回復(fù) 3# __lxmxn__

try this:

$ sed '/file/ {r file2
a [file]
d}' file1
###
### here is a section
###
[file]
path = /var/lib/mysql
comment = mysql server

###
### here is a section
###
[file]
path = /var/named
comment = bind data directory

yjh777

回復(fù) 1# __lxmxn__


sed '/\[file/ {:l /.*\(\n\n\|$\)/! {N; b l;}; s//###\n### xxx\n###\n&/; }'  file1

yjh777

sed "s/\[file/`   sed  ':l; N; $! b l; s/\\n/\\\\n/g'  file2  `\n&/" file1



-------------------------------------------------------------------------------------------------------
注意 ``  $() 區(qū)別， 直接$()就可以， 用``時(shí)還得將\再轉(zhuǎn)義}
sed 's/\[file/'"$(   sed  ':l; N; $! b l; s/\n/\\n/g'  file2   )"'\n&/' file1

headStr=$(sed  ':l; N; $! b l; s/\n/\\n/g'  file2)
sed "s/\[file/${headStr}\\n&/" file1

__lxmxn__

嗯，多謝 yjh777 兄~

感覺可以利用sed的hold space和pattern space來做到，但最終嘗試失敗。

BangBull

1. sed '/\[file\]/s//###\n### here is a section\n###\n&/' urfile

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