I have a SESSION_TOKEN which gets generated dynamically every 30 mins. Its character length is greater than 530 and approximately 536 characters will be there in it.
How can i split this string in UNIX scripting. Need help.
-
Its a bash script .Any suggestion on this?Jamuna Nandeesh– Jamuna Nandeesh2014-10-13 11:46:05 +00:00Commented Oct 13, 2014 at 11:46
-
How do you mean split? By delimiter? By length?Géza Török– Géza Török2014-10-13 12:51:34 +00:00Commented Oct 13, 2014 at 12:51
-
By length. Say i want to split the huge string into 3 variables based on length. 1 to 150, 151 to 300, 301 to end of stringJamuna Nandeesh– Jamuna Nandeesh2014-10-13 14:12:58 +00:00Commented Oct 13, 2014 at 14:12
-
1Please edit the question (just click edit below the question), to get all the information together. Comments will get lost along the way.BradHards– BradHards2014-10-13 21:33:45 +00:00Commented Oct 13, 2014 at 21:33
Add a comment
|
2 Answers
You can use the "cut" utility for this kind of fixed length work:
echo "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKK" | cut -c 10-20
CCCDDDDEEEE
The -c means "select by character" and the "10-20" says which characters to select.
You can also select by byte (using -b) which might make a difference if your data has some unusual encoding.
In your case, where you want to do multiple chunks of the same string, something like:
bradh@saxicola:~$ export somethingToChop="AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKK"
bradh@saxicola:~$ echo $somethingToChop | cut -c 1-10
AAAABBBBCC
bradh@saxicola:~$ echo $somethingToChop | cut -c 11-20
CCDDDDEEEE
bradh@saxicola:~$ echo $somethingToChop | cut -c 20-
EFFFFGGGGHHHHIIIIJJJJKKK
Would probably be the easiest to understand.
1 Comment
BradHards
Can you tick the "mark as answer" if you're OK with this answer.
Bash variable expansion has substring operations built in:
$ string="abcdefghijklmnopqrstuvwxyz";
$ first=${string:0:8}
$ second=${string:8:8}
$ third=${string:16}
$ echo $first, $second, $third
abcdefgh, ijklmnop, qrstuvwxyz
