Sponsored Content
Top Forums Shell Programming and Scripting need help with using input file in the while loop Post 302132156 by sytycd712 on Wednesday 15th of August 2007 02:33:31 PM
Old 08-15-2007
need help with using input file in the while loop

here's my code:

ls -lt | /usr/bin/egrep `date +"%Y%m%d(05|06|07|08|09|10|11|12|13|14|15|16|17|18|19)"` | \
/usr/bin/egrep -i .dat | /usr/bin/awk '{print $9}' > $LockboxFile1

if [[ -s $LockboxFile1]]
then
echo " "
echo "Files in the archived directory: "
cat $LockboxFile1 |
while read line
do
grep -l CHK $line >> $LockboxFile2
done
fi

it's erroring out, would anyone know why it's not working?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Problem taking input from file with for loop

I am trying to take input from a file and direct it into a bash script. This script is meant to be a foreach loop. I would like the script to process each item in the list one by one and direct the output to a file. # cat 1loop #!/bin/bash # this 2>&1 to redirect STDERR & STDOUT to file... (4 Replies)
Discussion started by: bash_in_my_head
4 Replies

2. Shell Programming and Scripting

perl how to exit a while loop and quit reading the input file

I am reading a file using While loop while <FILE> { $_ = <FILE>; process data... } I would like to quit reading the file once I encounter a String pattern. How do i do it. is it if (/SUMMARY/) { last; } I am having problems with uninitialized value in pattern... (1 Reply)
Discussion started by: subhap
1 Replies

3. Shell Programming and Scripting

For loop using input file doesn't expand variables

Hi, I'm using a for loop reading from an input file that contains files, whose path includes a variable name. But the for loop doesn't expand the variable and therefore can't find the file. Here's an example: File BACKUPFILES /home/John/alpha /home/Sue/beta... (8 Replies)
Discussion started by: Hesiod
8 Replies

4. Shell Programming and Scripting

matching user input to a text file loop?

until do read -p "Invalid cars. Try againa" cars1 done Ok i have the above code, im getting users input and if it doesnt match in the file the user has to try again untill its correct But when i run this it gives me an error saying ./Cars.bash: line 43: (2 Replies)
Discussion started by: gangsta
2 Replies

5. Shell Programming and Scripting

make loop from input file

Hi Guys, I have file A.txt PP97 PP66 PP87 PP66 PP47 PP57 PP44 PP20 PP66 PP16 PP13 PP51 PP68 PP70 PP75 PP30 (2 Replies)
Discussion started by: asavaliya
2 Replies

6. Shell Programming and Scripting

Detail on For loop for multiple file input and bash variable usage

Dear mentors, I just need little explanation regarding for loop to give input to awk script for file in `ls *.txt |sort -t"_" -k2n,2`; do awk script $file done which sorts file in order, and will input one after another file in order to awk script suppose if I have to input 2 or... (4 Replies)
Discussion started by: Akshay Hegde
4 Replies

7. Homework & Coursework Questions

Loop to Convert a list from an input file and output it to another file

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: A) Write a script, which will take input from a file and convert the number from Centigrade to Fahrenheit... (5 Replies)
Discussion started by: AliTheSnake
5 Replies

8. Shell Programming and Scripting

Use while loop to read file and use ${file} for both filename input into awk and as string to print

I have files named with different prefixes. From each I want to extract the first line containing a specific string, and then print that line along with the prefix. I've tried to do this with a while loop, but instead of printing the prefix I print the first line of the file twice. Files:... (3 Replies)
Discussion started by: pathunkathunk
3 Replies

9. Shell Programming and Scripting

HELP - loop a curl command with different variables from input file

Hi guys! Kind of new to bash scripting and now I'm stuck. I need to curl with these variables: "{ \"nodename\": \"$1\", \"ipaddress\": \"$2\", \"poolname\": \"$3\", \"port\": \"$4\", \"loadbalancer\" : \"$5\" }" and my input_file.txt contains server001 10.10.10.01 serverpool1 80... (4 Replies)
Discussion started by: yort
4 Replies

10. Shell Programming and Scripting

Read file input in while loop does not work on AIX system

I'm working on Aix 6.1 and using ksh shell. The below works fine on Linux bash or ksh shell . while IFS= read -r dirpath ; do echo "Hi" done <<<"$var" However, any such while loop that reads the input from file or variable using <<< fails on Aix system with the below error: Below... (2 Replies)
Discussion started by: mohtashims
2 Replies
egrep(1)																  egrep(1)

NAME
egrep - search a file for a pattern using full regular expressions SYNOPSIS
/usr/bin/egrep [-bchilnsv] [-e pattern_list] [-f file] [strings] [file...] /usr/xpg4/bin/egrep [-bchilnsvx] [-e pattern_list] [-f file] [strings] [file...] The egrep (expression grep) utility searches files for a pattern of characters and prints all lines that contain that pattern. egrep uses full regular expressions (expressions that have string values that use the full set of alphanumeric and special characters) to match the patterns. It uses a fast deterministic algorithm that sometimes needs exponential space. If no files are specified, egrep assumes standard input. Normally, each line found is copied to the standard output. The file name is printed before each line found if there is more than one input file. /usr/bin/egrep The /usr/bin/egrep utility accepts full regular expressions as described on the regexp(5) manual page, except for ( and ), ( and ), { and }, < and >, and , and with the addition of: 1. A full regular expression followed by + that matches one or more occurrences of the full regular expression. 2. A full regular expression followed by ? that matches 0 or 1 occurrences of the full regular expression. 3. Full regular expressions separated by | or by a NEWLINE that match strings that are matched by any of the expressions. 4. A full regular expression that can be enclosed in parentheses ()for grouping. Be careful using the characters $, *, [, ^, |, (, ), and in full regular expression, because they are also meaningful to the shell. It is safest to enclose the entire full regular expression in single quotes '... '. The order of precedence of operators is [], then *?+, then concatenation, then | and NEWLINE. /usr/xpg4/bin/egrep The /usr/xpg4/bin/egrep utility uses the regular expressions described in the EXTENDED REGULAR EXPRESSIONS section of the regex(5) manual page. The following options are supported for both /usr/bin/egrep and /usr/xpg4/bin/egrep: -b Precede each line by the block number on which it was found. This can be useful in locating block numbers by context (first block is 0). -c Print only a count of the lines that contain the pattern. -e pattern_list Search for a pattern_list (full regular expression that begins with a -). -f file Take the list of full regular expressions from file. -h Suppress printing of filenames when searching multiple files. -i Ignore upper/lower case distinction during comparisons. -l Print the names of files with matching lines once, separated by NEWLINEs. Does not repeat the names of files when the pat- tern is found more than once. -n Precede each line by its line number in the file (first line is 1). -s Work silently, that is, display nothing except error messages. This is useful for checking the error status. -v Print all lines except those that contain the pattern. /usr/xpg4/bin/egrep The following option is supported for /usr/xpg4/bin/egrep only: -x Consider only input lines that use all characters in the line to match an entire fixed string or regular expression to be matching lines. The following operands are supported: file A path name of a file to be searched for the patterns. If no file operands are specified, the standard input is used. /usr/bin/egrep pattern Specify a pattern to be used during the search for input. /usr/xpg4/bin/egrep pattern Specify one or more patterns to be used during the search for input. This operand is treated as if it were specified as -epattern_list. USAGE
See largefile(5) for the description of the behavior of egrep when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). See environ(5) for descriptions of the following environment variables that affect the execution of egrep: LC_COLLATE, LC_CTYPE, LC_MES- SAGES, and NLSPATH. The following exit values are returned: 0 If any matches are found. 1 If no matches are found. 2 For syntax errors or inaccessible files (even if matches were found). See attributes(5) for descriptions of the following attributes: /usr/bin/egrep +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Not Enabled | +-----------------------------+-----------------------------+ /usr/xpg4/bin/egrep +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ fgrep(1), grep(1), sed(1), sh(1), attributes(5), environ(5), largefile(5), regex(5), regexp(5), XPG4(5) Ideally there should be only one grep command, but there is not a single algorithm that spans a wide enough range of space-time tradeoffs. Lines are limited only by the size of the available virtual memory. /usr/xpg4/bin/egrep The /usr/xpg4/bin/egrep utility is identical to /usr/xpg4/bin/grep -E (see grep(1)). Portable applications should use /usr/xpg4/bin/grep -E. 23 May 2005 egrep(1)
All times are GMT -4. The time now is 07:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy