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我有以下bash
调用并希望将awk
命令放入文件中awk
。我想做的是将特定功能从 line 开始并在 function中$0 ~ beg_ere {
结束。然后就可以从函数中调用它。display { sub(pn_ere, "") ; print }
awk
bash
awk -v ukeys="$keyw" -v beg_ere="$beg_ere" -v pn_ere="$pn_ere" -v end_ere="$end_ere" \
'function praggr (aggr) {
resultstr = ""
for (k in aggr) resultstr = (resultstr " | " aggr[k])
return resultstr
}
$0 ~ beg_ere {
title=gensub(beg_ere, "\\2", 1, $0);
subtitle=gensub(beg_ere, "\\3", 1, $0);
keywords=gensub(beg_ere, "\\4", 1, $0);
nu = split(ukeys, uaggr, ",");
nk = split(keywords, kaggr, ",");
display=0;
if ( nu > 0 && nk > 0)
{
for (i in uaggr)
{
umatch=0;
for (j in kaggr)
{
if (uaggr[i] == kaggr[j]) { umatch=1; break; }
}
if (umatch == 1) { display=1; }
}
}
else if ( nu > 0 && nk == 0 )
{
display=0;
}
else if ( nu == 0 )
{
display=1;
}
if (verbiage)
{
print "Title: " title;
print "Subtitle: " subtitle;
print "Keywords: " keywords;
print "uaggr: " praggr(uaggr);
print "kaggr: " praggr(kaggr);
print "nu:" nu;
print "nk:" nk;
}
next
}
$0 ~ end_ere { display=0 ; print "" }
display { sub(pn_ere, "") ; print }
' "$filename"
答案1
创建一个.awk
扩展名为 的新文件,例如script.awk
,并将 awk 表达式粘贴到该文件中。然后,您可以在命令中引用该文件。
awk -v ukeys="$keyw" -v beg_ere="$beg_ere" -v pn_ere="$pn_ere" -v end_ere="$end_ere" -f script.awk "$filename"
答案2
我认为不可能同时指定。awk -f
和awk '{code...}'
在 GNU awk (又名gawk
)中,您可以使用选项同时读取多个代码-e
,请参阅 参考资料gawk --help
获取更多详细信息。阅读使用也会很有用AWKPATH
(请参阅man gawk
阅读有关它的内容)。
为了避免在这种情况下使用 GNU awk,您应该-f
在awk
命令中指定 multiple。
和避免使用两个文件您可以使用流程替代 <(command)
。例如,您可以使用 -f<(echo code ...)
定义函数,并在awk
文件内定义其他代码,如下所示:
test.awk:
{ // I'm not sure if the `{` and `}` should be here or they're not necessary at all
$0 ~ beg_ere {
title=gensub(beg_ere, "\\2", 1, $0);
subtitle=gensub(beg_ere, "\\3", 1, $0);
keywords=gensub(beg_ere, "\\4", 1, $0);
nu = split(ukeys, uaggr, ",");
nk = split(keywords, kaggr, ",");
display=0;
if ( nu > 0 && nk > 0)
{
for (i in uaggr)
{
umatch=0;
for (j in kaggr)
{
if (uaggr[i] == kaggr[j]) { umatch=1; break; }
}
if (umatch == 1) { display=1; }
}
}
else if ( nu > 0 && nk == 0 )
{
display=0;
}
else if ( nu == 0 )
{
display=1;
}
if ()
{
print "Title: " title;
print "Subtitle: " subtitle;
print "Keywords: " keywords;
print "uaggr: " praggr(uaggr);
print "kaggr: " praggr(kaggr);
print "nu:" nu;
print "nk:" nk;
}
next
}
$0 ~ end_ere { display=0 ; print "" }
display { sub(pn_ere, "") ; print }
}
通过进程替换,您可以使用如下内容:
<(echo 'function praggr (aggr) {
resultstr = ""
for (k in aggr) resultstr = (resultstr " | " aggr[k])
return resultstr
}
')
或者为了避免单引号问题,'
您可以使用cat << EOF
:
<(cat <<'EOF'
function praggr (aggr) {
resultstr = ""
for (k in aggr) resultstr = (resultstr " | " aggr[k])
return resultstr
}
EOF
)
最后,你的awk
命令将变成:
awk -v yourvars... -f <(echo 'function praggr (aggr) {
resultstr = ""
for (k in aggr) resultstr = (resultstr " | " aggr[k])
return resultstr
}
') -f test.awk "$filename"