Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

incr(1t) [opensolaris man page]

incr(1T)						       Tcl Built-In Commands							  incr(1T)


incr - Increment the value of a variable SYNOPSIS
incr varName ?increment? _________________________________________________________________ DESCRIPTION
Increments the value stored in the variable whose name is varName. The value of the variable must be an integer. If increment is supplied then its value (which must be an integer) is added to the value of variable varName; otherwise 1 is added to varName. The new value is stored as a decimal string in variable varName and also returned as result. EXAMPLES
Add one to the contents of the variable x: incr x Add 42 to the contents of the variable x: incr x 42 Add the contents of the variable y to the contents of the variable x: incr x $y Add nothing at all to the variable x (often useful for checking whether an argument to a procedure is actually numeric and generating an error if it is not): incr x 0 SEE ALSO
add, increment, variable, value ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on Tcl incr(1T)

Check Out this Related Man Page

append(1T)						       Tcl Built-In Commands							append(1T)


append - Append to variable SYNOPSIS
append varName ?value value value ...? _________________________________________________________________ DESCRIPTION
Append all of the value arguments to the current value of variable varName. If varName doesn't exist, it is given a value equal to the concatenation of all the value arguments. The result of this command is the new value stored in variable varName. This command provides an efficient way to build up long variables incrementally. For example, ``append a $b'' is much more efficient than ``set a $a$b'' if $a is long. EXAMPLE
Building a string of comma-separated numbers piecemeal using a loop. set var 0 for {set i 1} {$i<=10} {incr i} { append var "," $i } puts $var # Prints 0,1,2,3,4,5,6,7,8,9,10 SEE ALSO
concat(1T), lappend(1T) KEYWORDS
append, variable ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on Tcl append(1T)
Man Page

14 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

calling a aliased variable

Issue: i have variable A which is an alias for variable B which is equal to "THIS IS A TEST" when every i echo variable A i only get the alias name for variable B, NOT the contents of variable B. HOSTNAME# echo $TESTIT + echo THIS IS A TEST THIS IS A TEST HOSTNAME# ls -l total... (10 Replies)
Discussion started by: Optimus_P
10 Replies

2. UNIX for Dummies Questions & Answers

define length of variable

I have a variable with a value of "05". When I add one to that variable, using the command: CURR_YY=`expr $CURR_YY + 1`, I get the value of "6", losing the leading zero (which is needed for passing to another script). How do I keep the leading zero? Thank you! (10 Replies)
Discussion started by: cbarker
10 Replies

3. Shell Programming and Scripting

calculate number of strings in a variable

Hi all I have a variable called "variable" and is of the form variable ="AAA BBB CCC DDD" {basically it has values separated by spaces} What is the simplest way to check if "variable" has more that one value in its list? Thanks. (9 Replies)
Discussion started by: felixmat1
9 Replies

4. Shell Programming and Scripting

What's the max integer a variable can hold?

I would like to know the maximum integer that a variable can hold. Actually one of my variable holds value 2231599773 and hence the script fails to process it.Do we have any other data type or options available to handle this long integers? (9 Replies)
Discussion started by: michaelrozar17
9 Replies

5. Shell Programming and Scripting

Unable to store "-e" in variable ??????

p="-e" echo $p It is not returning the value "-e" stored. Instead returns null. I am wondering how could this happen. Please help me out.I tried all possibilities like p='-e' | p="\-e". Nothing seems to work. :confused::confused: (10 Replies)
Discussion started by: shanneykar
10 Replies

6. UNIX for Dummies Questions & Answers

Incrementing variable in for

Hi, want to increment a variable in a for loop like this: for (( c=$total-1; c>=0; c-- )) do if ; then maximo=$valores fi done But it gives the error: No such file or directory How can i do this only incrementing the c variable? Thanks (8 Replies)
Discussion started by: limadario
8 Replies

7. Shell Programming and Scripting

PERL : Use of a variable in a tr

Hi, I want to count the number of occurences of a character in a string variable ($str). The character is stored in a another variable ($sepchr). I am using tr as : $count = ($str =~ tr/$sepchr//); This did not work. I found in another thread about using eval. I used eval as : ... (13 Replies)
Discussion started by: sinpeak
13 Replies

8. Shell Programming and Scripting

Increment a variable in unix bash

Hello There, I have been trying to increment the value of variable to 1, 2, 3 etc. but, it displays 1 1+1 1+1+1 ..... :wall: Could anyone help out with this? for i in *.* do s=`expr $s+1` echo $s j=$i$j mv $i $j done Any help is appreciated? (24 Replies)
Discussion started by: amrutha0303
24 Replies

9. Shell Programming and Scripting

Resolve variable inside another variable

Hello Everyone, I am trying to resolve a variable inside another variable.Let me go straight to the example. Input: Query=$Table_1 Join $Table_2 (Query itself is a variable here) Now for two different cases I am assigning different values to Table_1 and Table_2 Case 1:... (14 Replies)
Discussion started by: vinay4889
14 Replies

10. Shell Programming and Scripting

Bash variable within variable

Hello, Can I ask how to expand variable that contains another in bash? I need to loop variable within another one like this: RD1=testgrp RD2=testgroup RD3=testgroupfile RD4=tstgroup ... RD40=try2013 DEST=/home/king/finaldir for i in {1..40}; do mv ${RD${i}} ${DEST} done I do not... (8 Replies)
Discussion started by: yifangt
8 Replies

11. Shell Programming and Scripting

awk print columns and variable

Hi, Can anyone help with the below please? I have written some code which takes an input file, and and prints the contents out to a new file - it then loops round and prints the same columns, but increments the ID column by 1 each time. Input file; NAME,1,15-Dec-15, NAME,1,21-Dec-15,... (9 Replies)
Discussion started by: Ads89
9 Replies

12. UNIX for Beginners Questions & Answers

Storing file contents to a variable

Hi All, I was trying a shell script. I was unable to store file contents to a variable in the script. I have tried the below but unable to do it. Input = `cat /path/op.diary` Input = $(<op.diary) I am using ksh shell. I want to store the 'op.diary' file contents to the variable 'Input'... (12 Replies)
Discussion started by: am24
12 Replies

13. UNIX for Dummies Questions & Answers

Storing file contents to a variable

(12 Replies)
Discussion started by: am24
12 Replies

14. UNIX for Beginners Questions & Answers

Replace integer string in a variable based on month?

Hi Folks - Linux Version = Linux 2.6.39-400.128.17.el5uek x86_64 I have a process that determines the start and end load periods for an Oracle data load process. The variables used are as follows follows: They are populated like such: However, the load requires the month to be the... (11 Replies)
Discussion started by: SIMMS7400
11 Replies

Featured Tech Videos