---
name: "xchklog"
section: "8"
platform: "linux"
package: "jfsutils"
version: "1.0.14-1"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/xchklog"
---

# xchklog(8)

extract a log from the JFS fsck workspace into a file

## NAME

**xchklog** - extract a log from the JFS fsck workspace into a file

## SYNOPSIS

**xchklog** \[ **-f** *output.file* \] \[   **-p** \] \[ **-V** \]  *device*

## DESCRIPTION

**xchklog** extracts the contents of either the most recent or immediately prior JFS fsck service log from the specified device, and writes the output into a specified or default file.  (The default file name is *\<pwd\>fscklog.new*. If the  **-p** option is used, the default file name is *\<pwd\>fscklog.old*.)

The contents of the output file can be formatted into text by using the JFS utility **xchkdmp**.

*device* is the special file name corresponding to the actual device from which the fsck log will be extracted (e.g.  **/dev/hdb1** ).

## OPTIONS

- **-f** *output.file*

  Specify the output file name, overriding the default file name.

  *output.file* must be 127 characters or less in length.

  *output.file* will be created in the present working directory unless it is fully qualified.

- **-p**

  Extract the prior log (as opposed to the most recent log).

- **-V**

  Print version information and exit (regardless of any other chosen options).

## EXAMPLES

 Extract the most recent log on /dev/hda5 into  *\<pwd\>fscklog.new*:

-

  **xchklog /dev/hda5**

-

  Extract the most recent log on /dev/hdb3 into  */temp/l9651107.log*:

-

  **xchklog -f /temp/l9651107.log /dev/hdb3**

-

  Extract the prior log on /dev/hdb4 into  *\<pwd\>fscklog.old*:

-

  **xchklog -p /dev/hdb4**

-

  ## REPORTING BUGS

If you find a bug in  **JFS** or  **xchklog,** please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site:

```
http://oss.software.ibm.com/jfs
```

Please send as much pertinent information as possible, including any  **xchklog** error messages and the complete output of running  **fsck.jfs** with the  **-v** option on the JFS device.

## SEE ALSO

[**xchkdmp**(8)](/xchkdmp/8.md), [**mkfs.jfs**(8)](/mkfs.jfs/8.md), [**fsck.jfs**(8)](/fsck.jfs/8.md), [**logdump**(8)](/logdump/8.md), [**logredo**(8)](/logredo/8.md), [**xpeek**(8)](/xpeek/8.md)

## AUTHOR

```
Barry Arndt  (barndt@us.ibm.com)
```

**xchklog** is maintained by IBM.

```
See the JFS project web site for more details:
http://oss.software.ibm.com/jfs
```