1. Shell Programming and Scripting

I have a 1-column file with random numbers. this script runs to subtract 1 to the number and written to a file. With over 10,000 lines, it takes >2 minutes to complete the loop operation. is there an alternative awk/sed for looping to reduce the wait? Thanks! #!/bin/ksh for N in `cat... (2 Replies)

2. UNIX for Dummies Questions & Answers

HELLO all :), I have been trying to use a simple while loop to read a file " templist", line by line and perform an action. See the code below. The reason for not using a while read line loop is the for the use of the if condition that wouldn't work. I would appreciate some ideas as this has... (2 Replies)

3. Shell Programming and Scripting

i=1 while do mm=02 dd=03 yy=2008 echo "$mm$dd$yy" i=$(( i+1)) echo "$i" done whenever i execute the script above i will get the error below: syntax error at line 30: `i=$' unexpected (3 Replies)

4. UNIX for Dummies Questions & Answers

Hi there, i want to direct the out put return from the FOR loop statement to any log file. code copied below. for file in `ls *.in` do ... ... done if there is no file then i need to write the log to one file. Thanks Arun (3 Replies)

5. Shell Programming and Scripting

Hi All, thanks in advance for any help you can give me. I'm trying to get some error checking of a username in my shell script. While I have that part under control, at the moment my script just exits if the username entered doesn't match the correct syntax. I've been googling to try and... (4 Replies)

6. UNIX for Advanced & Expert Users

Hi, The following sed command is not working for me, does anyone have a good alternative for joining lines in a file based on a match? # if a line ends with a backslash, append the next line to it sed -e :a -e '/\\$/N; s/\\\n//; ta' (6 Replies)

7. Shell Programming and Scripting

Dear All, Please help me out for the below query echo 'please input file type (i.e file1,file2,file3,file4): ' read a cat hello.wri | grep $a | wc -l > temp1.wri cat hello.wri | grep $a | wc -l > temp2.wri cat hello.wri | grep $a | wc -l > temp3.wri cat hello.wri | grep $a | wc -l >... (1 Reply)

8. Shell Programming and Scripting

Hi everyone, Can ny1 help me out regarding while loop arguments i.e. what does -gt -ge -lt -le means? actually i am new to while loops (2 Replies)

9. Shell Programming and Scripting

/usr/sbin/ifconfig -a | grep "inet" | grep -v "inet6" | grep -v "127.0.0.1" | grep -v "0.0.0.0"|grep -v "192.168.100.2" | awk '{print $2}' I use above command to get IP addresses on AIX boxes.Values coming here are set to a variable "Host IPs.IP Addresses" in my fingerprinting engine. ... (4 Replies)

10. UNIX for Advanced & Expert Users

Scenario: Command used to capture IPs on a host: /usr/sbin/ifconfig -a | grep "inet" | egrep -v "inet6|0.0.0.0|192.168.100.2" | awk '{print $2}' Following for loop used to capture interface names: for INTERFACE in `/usr/sbin/ifconfig -a | nawk '$1 ~ /:$/ && $1 {sub(":$", "", $1); print... (3 Replies)