Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Using Grep to Define a Variable Post 8507 by kristy on Friday 12th of October 2001 12:22:38 PM
Old 10-12-2001
I tried it this way...

I'm sure there are 100 different ways of accomplishing this, but this worked for me:

#!/bin/ksh

A=`grep Time test.txt | cut -f2`

if [ $A = \#Missing ]
then
echo "page me"
fi
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to define two variable in foreach command??

Hello, I just want to know how If it's possiple to define 2 variable using foreach command ??? I have directory inside that directory around 1000 file, I want to rename all of this files to something I have it in a list. Example :- ------This is what in my directory---------- d1 d2... (14 Replies)
Discussion started by: geoquest
14 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

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

4. 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

5. 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

6. Shell Programming and Scripting

In Perl can i define a hash with value as variable?

Hi, Is it possible in perl to have a hash defined with variables as theirs key values, like: %account = ('username' => 'boy', 'password' => $password); Thanks (1 Reply)
Discussion started by: zing_foru
1 Replies

7. 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

8. UNIX for Dummies Questions & Answers

How to prompt user to define a variable?

Hi everyone, Is it possible to define blank vaianbles and prompt user to fill them during the script execution? A very simple example: INPUT= OUTPUT= cut -f1-4 $INPUT | sed 's/hello/goodbye/g' | sort -uV > $OUTPUTThank you in advance! Best wishes (2 Replies)
Discussion started by: lsantome
2 Replies

9. Shell Programming and Scripting

How to define two digits variable in shell script?

Dear Shell script Experts, I am working on shell script which is defined here, qsub_seq.csh . The purpose of this script is to read few input files (with defined starting index and last index) and make processing faster over server. For some task, I had 1064 of input files, so I wrote another... (8 Replies)
Discussion started by: emily
8 Replies
cut(1)								   User Commands							    cut(1)

NAME
cut - cut out selected fields of each line of a file SYNOPSIS
cut -b list [-n] [file]... cut -c list [file]... cut -f list [-d delim] [-s] [file]... DESCRIPTION
Use the cut utility to cut out columns from a table or fields from each line of a file; in data base parlance, it implements the projection of a relation. The fields as specified by list can be fixed length, that is, character positions as on a punched card (-c option) or the length can vary from line to line and be marked with a field delimiter character like TAB (-f option). cut can be used as a filter. Either the -b, -c, or -f option must be specified. Use grep(1) to make horizontal ``cuts'' (by context) through a file, or paste(1) to put files together column-wise (that is, horizontally). To reorder columns in a table, use cut and paste. OPTIONS
The following options are supported: list A comma-separated or blank-character-separated list of integer field numbers (in increasing order), with optional - to indi- cate ranges (for instance, 1,4,7; 1-3,8; -5,10 (short for 1-5,10); or 3- (short for third through last field)). -b list The list following -b specifies byte positions (for instance, -b1-72 would pass the first 72 bytes of each line). When -b and -n are used together, list is adjusted so that no multi-byte character is split. -c list The list following -c specifies character positions (for instance, -c1-72 would pass the first 72 characters of each line). -d delim The character following -d is the field delimiter (-f option only). Default is tab. Space or other characters with special meaning to the shell must be quoted. delim can be a multi-byte character. -f list The list following -f is a list of fields assumed to be separated in the file by a delimiter character (see -d ); for instance, -f1,7 copies the first and seventh field only. Lines with no field delimiters will be passed through intact (useful for table subheadings), unless -s is specified. -n Do not split characters. When -b list and -n are used together, list is adjusted so that no multi-byte character is split. -s Suppresses lines with no delimiter characters in case of -f option. Unless specified, lines with no delimiters will be passed through untouched. OPERANDS
The following operands are supported: file A path name of an input file. If no file operands are specified, or if a file operand is -, the standard input will be used. USAGE
See largefile(5) for the description of the behavior of cut when encountering files greater than or equal to 2 Gbyte (2^31 bytes). EXAMPLES
Example 1 Mapping user IDs A mapping of user IDs to names follows: example% cut -d: -f1,5 /etc/passwd Example 2 Setting current login name To set name to current login name: example$ name=`who am i | cut -f1 -d' '` ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of cut: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 All input files were output successfully. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
grep(1), paste(1), attributes(5), environ(5), largefile(5), standards(5) DIAGNOSTICS
cut: -n may only be used with -b cut: -d may only be used with -f cut: -s may only be used with -f cut: cannot open <file> Either file cannot be read or does not exist. If multiple files are present, processing continues. cut: no delimiter specified Missing delim on -d option. cut: invalid delimiter cut: no list specified Missing list on -b, -c, or -f option. cut: invalid range specifier cut: too many ranges specified cut: range must be increasing cut: invalid character in range cut: internal error processing input cut: invalid multibyte character cut: unable to allocate enough memory SunOS 5.11 29 Apr 1999 cut(1)
All times are GMT -4. The time now is 04:33 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy