Shell Programming and Scripting

dear all
about my last question

in fileA.txt (all list line i want to find in fileB.txt)
is content of line number
fileA.txt
23
34
35
55
59

and fileB.txt is content like
24:asd|ekkk|001|001
123:bca|egsd|210|002
1231:cas|egds|322|231
...
in fileB.txt they have line number like example:
line number 24 is asd|ekkk|001|001
line number 123 is bca|egsd|210|002

now how if i have line number in fileA.txt and
make me faster find line in fileB.txt so not scan all line number and to the point to target....

thx for help me

You can do something like that :

Code:

$ cat fileA.txt
23
34
35
55
59
$ cat fileB.txt
23:klm|azer|000|601
24:asd|ekkk|001|001
123:bca|egsd|210|002
1231:cas|egds|322|231
35:xyz|abc|999|224
1:mno|def|333|097
$ awk -F: 'NR==FNR {L[$1]++; next;} $1 in L' fileA.txt fileB.txt
23:klm|azer|000|601
35:xyz|abc|999|224
$

Jean-Pierre.

The ++ could even be omitted (useless) :

Code:

nawk -F: 'NR==FNR {L[$1];next}$1 in L' file1 file2

thx all you are helping my job.....

one i think how about using sed...like this

sed -n -e {fileA.txt}p fileB.txt

to get line in fileB.txt

thx become

One more way ..

cat fileA.txt | xargs | sed 's, ,|,g;s,^,egrep ",g;s,$,\" fileB.txt,g' | sh

---------- Post updated at 05:56 PM ---------- Previous update was at 05:51 PM ----------

slight modification..

cat fileA.txt | xargs | sed 's,^,\^,g;s, ,|^,g;s,^,egrep ",g;s,$,\" fileB.txt,g' | sh

Output:
---------
23:klm|azer|000|601
35:xyz|abc|999|224