1. Shell Programming and Scripting

Hi, I have a 5 gig file, no record terminators, field terminators are newline. The record length is 768 and I would like to check that every 768th byte is a newline and print out the byte position if it isn't. I would like to do this going either forward or backwards with one command if... (3 Replies)

2. Shell Programming and Scripting

why date -d "19010101" gets error " date: invalid date `19010101' " but date -d "19020101" is fine? Any approach to fix that? Thank you. (8 Replies)

3. Shell Programming and Scripting

Hi, I am passing date string of format 'YYYYMMDD' to a ksh script. Will I be able to get next valid date from the passed in string. Example I pass '20100228' to the shell script, Is there a reverse date command to get '20100301' .i.e to convert '20100228' to date and get next date.... (5 Replies)

4. Shell Programming and Scripting

File contian below data... 20111101 20111102 20111131 I am new to unix and per scirpt... First two records are valid and last record is invalid,how to get the valid records... Please help me unix or perl script. :wall: Thanks, Murali (5 Replies)

5. Shell Programming and Scripting

Hi All, I am trying to convert the date of all files under a directory in seconds, PFB script a=`ls -lrt | wc -l` echo $a for ((i=1;i<=$a;i++)) do A=`ls -lrt | awk '{print $6,$7,$8}' | head -$i | tail -1` echo ${A} date -d '${A}' +%s donebut I am getting error date: invalid date... (1 Reply)

6. UNIX for Dummies Questions & Answers

Hi All, I am a newbie...I would like to have a function which ll check if a file contains valid strings before "=" operator. Just to give you my requirement: assume my file has content: hello= gsdgsd sfdsg sgdsg sgdgdg world= gggg hhhh iiiii xxxx= pppp ppppp pppp my... (5 Replies)

7. Shell Programming and Scripting

My question is how would i loop a read command to keep asking the user for input and eventually print the no. of valid invalid inputs after a specified control input typed i.e. (-3). (1 Reply)

8. UNIX for Advanced & Expert Users

Hi, I have a function to calculate "yesterday" in format YYYYMMDD: desa_ev9 # date +"%Y%m%d" --date "-1 day 20180701" 20180630 desa_ev9 # date +"%Y%m%d" --date "-1 day 20180720" 20180719 desa_ev9 # date +"%Y%m%d" --date "-1 day 20190101" 20181231 desa_ev9 # date +"%Y%m%d" --date "-1... (2 Replies)

9. Shell Programming and Scripting

i try to set linux date & time in specific format but it keep giving me error Example : date "+%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01" or date +"%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01" keep giving me this error : date: invalid date ‘19-01-2017 00:05:01' Please use CODE tags... (7 Replies)

10. Shell Programming and Scripting

Hello. I can use any particular (stupid or not) format when using bash date command. Example : ~> date --date "now" '+%Y-%m-%d %H!%M!%S' 2019-06-03 12!55!33or ~> date --date "now" '+%Y£%m£%d %H¤%M¤%S' 2019£06£03 12¤57¤36 or ~> date --date "now" '+%Y-%m-%d %H-%M-%S' 2019-06-03 12-58-51 ... (4 Replies)