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I am using bash in Fedora 30

From the below lines (ls -l output), how can I print whatever is between the strings 'status_' and '.log'

$ ls -l | grep -i status
-rw-rw-r--. 1 sysadmin...

Thank You very much Peasant.
Hi Leo
Will try cat those files when I reach home. If I remember correctly, i couldn't cat those files even as root.
file command's output from my above post...

version info : Fedora 28 (Kernel version: 4.16.12-300)
shell : bash

Using echo command , if I redirect a text like "Chocolate" to a file , all the contents in the file are overwritten as shown...

Thank You guys.
But none of the above solutions worked for me.

Ok. After I set set -o vi

how can I replace 2 which under the cursor with 7 ?

OS : RHEL / Oracle Linux 6.8

In bash shell, how can I replace a character under the cursor with another character ?

In the below example , after I typed the following line, I realized that I...

shell : bash
os : RHEL 7.2

I have a file like below

61265388
1-11Y5C-7690
1-11Y4Q-6763
INSERT INTO emp VALUES('oramds:test.xref','CBS_01','MIGWO161265388','61265388','N',SYSDATE);

INSERT...

My for loop (shown below) deleted all the files instead of renaming it :o

Any idea how I can do this correctly using a for loop (or any loop) ?
And how did my files get removed with the below mv...

OS : Oracle Linux 6.8
shell : bash

As shown below, I have multiple files like below (query1-extract_aa, query1-extract_ab, query1-extract_ac, ....)

$ ls -l
total 235680
-rw-rw-r-- 1...

It worked. Thank You Ravinder

OS version: RHEL 7.4
Shell : bash

I have a file which has lines like below. As you can see , they are SELECT queries.

SELECT * FROM S_DEALER_USER WHERE ROWNUM < 100;
SELECT * FROM ...

OS version: RHEL 7.4
Shell : bash

I would like to capture command outputs using tee like # yum upgrade | tee yumupgradeLog

But, if I use tee command, I cannot respond to prompts like Is this...

OS : RHEL 7.3

I have a file like below. I want to move (cut and paste) the first 7 lines of file1 to another file (file2).
How can I do this ? In my real life scenario, I will be moving first 12...

RHEL 7.3

In Linux, how can I create a large dummy file which is 15GB in size ?

You could be right Scrutinizer. All those lines except pc hello world comes from lsmod command in Linux. It could have leading spaces.

Hi MadeInGermany,
What does the 2 equal operators == in...

Shell : Bash shell (Fedora 26)

In the below text file (output.txt), I need to find all lines starting with the pattern pc. As you can see, only one line matches this condition (pc hello world)....

Thank You Rudic.

what does the sed clause /; s/$/ do ?

OS version: RHEL 6.7
Shell : Bash


I have a file like below

$ cat pattern.txt
'T_PKT_HEADER'
'T_ORD_ITM_LOYX'
'T_ORDERITM_TRMS'
'T_ORDER_ITEM'
'T_ORDER_ITM_PRI'
'T_ORDER_ITEM_OM'...

Brilliant. Thank You Prasanna.
Thank You Rudic

Hi Rudic,
Already tried the following (no single quotes). In this case, logfile is not generated at all !

spool /home/appusr/scripts/$dateString_batchtest3.log

Tried double quotes too (...

SQL*Plus version : 11.2.0.4
OS : Oracle Linux 6.5

SQL*Plus is a client application to connect to oracle database. The log file for this tool is generated via spool command as shown below.

I am...

Thank You drysdalk.

In my real life scenario, I have program being called inside script1.sh . This program doesn't take any input parameters.
Instead, it reads a config file (config.txt) and...

OS version: RHEL 6.7

myTextFile.txt file is referred within Script1.sh script,

I only execute Script1.sh and I want the input variable to be passed inside myTextFile.txt . Any idea how I can...

My OS : RHEL 6.7

I have a text file with comma separated values like below

$ cat testString.txt
'JOHN' , 'KEITH' , 'NEWMAN' , 'URSULA' , 'ARIANNA' , 'CHENG', . . . .


I want these values...

Platform: Oracle Linux 6.5
I have a file with hundreds of values enclosed in single quotes like below. I want the trailing empty spaces before the ending quote to be removed. Expected output shown...