Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

define length of variable

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers define length of variable
# 8  
Old 04-01-2005
Code:
$ a="10"
$ echo "before->[${a}]"
before->[10]
$ a=`expr ${a} + 1|sed 's/^/0/'`
$ echo "after->[${a}]"
after->[011]

# 9  
Old 04-01-2005
Is there a way to always keep the variable at two characters, only having a leading zero, if the year is less than 10?
# 10  
Old 04-01-2005
Quote:
Originally Posted by cbarker
Is there a way to always keep the variable at two characters, only having a leading zero, if the year is less than 10?
Code:
#!/bin/sh

a='06'
#a='11'
echo "before->[${a}]"
a=`expr ${a} + 1|sed 's/^.$/0&/'`
echo "after->[${a}]"

# 11  
Old 04-01-2005
Thank you very much for your assistance. I manipulated the variables, tested again and it kept the variable at two digits.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Convert variable length record to fixed length

Hi Team, I have an issue to split the file which is having special chracter(German Char) using awk command. I have a different length records in a file. I am separating the files based on the length using awk command. The command is working fine if the record is not having any... (7 Replies)
Discussion started by: Anthuvan
7 Replies

2. Shell Programming and Scripting

Define variable from file.

HI I have file A.txt _1A _2A _3A _4A I want define all as different variable. $1A=_1A $2B=_2A $3C=_3A $4D=_4A Now i can use any variable in my script. (3 Replies)
Discussion started by: pareshkp
3 Replies

3. Shell Programming and Scripting

question about define variable.

Hi, Unix Gurus, In our existing file, there is a script like #!/bin/sh step=${1:-0} cur_step=10 if ... My question is what's "${1:-0}" mean? I know it defines a variable but I don't know what's (1:-0) mean? :wall: Thanks in advance. (2 Replies)
Discussion started by: ken002
2 Replies

4. Shell Programming and Scripting

changing a variable length text to a fixed length

Hi, Can anyone help with a effective solution ? I need to change a variable length text field (between 1 - 18 characters) to a fixed length text of 18 characters with the unused portion, at the end, filled with spaces. The text field is actually field 10 of a .csv file however I could cut... (7 Replies)
Discussion started by: dc18
7 Replies

5. Shell Programming and Scripting

bash - define a variable

Hello, I would like to define a variable based on another variable: a=5 b$a=100 This does not work. What is the right way to do it? Thanks ---------- Post updated at 07:37 PM ---------- Previous update was at 07:33 PM ---------- Found my answer with the search function (did not... (0 Replies)
Discussion started by: jolecanard
0 Replies

6. Shell Programming and Scripting

How to define a variable with variable definition is stored in a variable?

Hi all, I have a variable say var1 (output from somewhere, which I can't change)which store something like this: echo $var1 name=fred age=25 address="123 abc" password=pass1234 how can I make the variable $name, $age, $address and $password contain the info? I mean do this in a... (1 Reply)
Discussion started by: freddy1228
1 Replies

7. Shell Programming and Scripting

Make variable length record a fixed length

Very, very new to unix scripting and have a unique situation. I have a file of records that contain 3 records types: (H)eader Records (D)etail Records (T)railer Records The Detail records are 82 bytes in length which is perfect. The Header and Trailer records sometimes are 82 bytes in... (3 Replies)
Discussion started by: jclanc8
3 Replies

8. Shell Programming and Scripting

creating a fixed length output from a variable length input

Is there a command that sets a variable length? I have a input of a variable length field but my output for that field needs to be set to 32 char. Is there such a command? I am on a sun box running ksh Thanks (2 Replies)
Discussion started by: r1500
2 Replies

9. UNIX for Dummies Questions & Answers

Using Grep to Define a Variable

I am using korn shell unix. I have a script that I am working with to do a check for me using a text file. #finds "Time" from the text file and cuts the second field from the #line A= grep Time test.txt | cut -f2 # the "#Missing" is being pulled from the second field of the text... (1 Reply)
Discussion started by: cspcspcsp
1 Replies
Login or Register to Ask a Question